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    lAlAFdoRpSoBTE

    tIjAIloBkmikmFbFcRhoFKOFPLiFdo:mvkpOfxj~I

    Amazing Facts of Planet Earth

    and the Universe

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    ii

    Amazing Facts of Planet Earth and the Universe. (Karen version)

    w>*h>vDRurXur.b.C;[D.cd.zsX.D;rluydmt*h>I

    Drum Publication Group

    P.O Box 66

    Kanchanaburi 71000

    Thailand

    [email protected]

    May 2006

    ISBN - 974-94338-2-3

    Lilly and Paw Saw Htee's

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    iii

    w>*h>cd.wD

    What is the hottest place on Earth?

    w>vD>tud>d.uwX>vX[D.cd.rh>w>vD>rEkRvJ.I 1

    What makes thunder?

    w>rEkRk;uJxD.vDoD.vJ.I 2

    Can rocks float?

    vX>wz.xD.zDoh{gI 3Can rocks grow?

    vX>wz.d.xD.oh{gI 4

    How much space dust falls to Earth each year?

    weH.b.weH.w>url.vXrlysDHvDRql[D.cd.xJvJ.I 5

    How far does regular dust blow in the wind?

    w>url.rk>qh.rk>*DRHvXuvHRusg,HRxJvJ.I 6

    What is the most rain to fall in just one minute?

    wrH;eH;twD>ylRw>plRtguwX>xJvJ.I 7

    Is Earth round?

    rh>[D.cd.uzsX.{gI 8

    How long is a Martian year?

    rlzsX.vXtbl;uwX>D;[D.cd. (rh) rg(pf) M.weH.,HmxJvJ.I 9

    How long is the average Martian day?

    rg(pf) tylRrk>eHRweHRxDxJvJ.I 10

    What is the largest volcano?

    upX>rh.tltd.uwX>rh>upX>rh.tlrEkRvJ.I 11

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    iv

    What was the strongest earthquake in recent times?

    [D.cd.[l;tql.uwX>vXtuJxD.o;zJw,Hmb.t

    wD>ylRM.rh>zJvJ.wcgvJ.I 12

    Has the moon always been so close?

    rh>vgbl;D;[D.cd.xDbd{gI 13

    Do earthquakes sing?

    [D.cd.[l;o;0H.w>{gI 14

    What is the wettest place on Earth?

    w>vD>tb.pD.uwX>vX[D.cd.M.rh>w>vD>rEkRvJ.I 15

    Which of Earths oceans is the largest?

    r;orH;tvJ>uwX>vX[D.cd.rh>r;orH;zJvJ.wbh.vJ.I 16

    What plant can live for thousands of years?

    w>rk>w>bdrEkRwuvkmvXttd.rlohwkRteH.wuxdvJ.I 17

    What is the highest mountain?

    upX>vXtxDuwX>M.rh>upX>rEkRwzsX.vJ.I 18

    Is it possible to drill a hole to the center of the earth?

    rh>ecl.w>yllRql[D.cd.to;uH >M>{gI 19

    Which of the following sources stores the greatest volume

    of fresh water worldwide: lakes, streams or ground water?

    ed.< xHzdusdrhwrh>[D.vmxHwz.tusgzJvJ.wcgymzSd.

    xHbsgM>tguwX>vJ.I 20

    What is the largest canyon?

    w>}wdtdd.uwX>rh>w>}wdrEkRvJ.I 21

    How much of Earths surface consists of volcanic rock?

    [D.cd.rJmzH;cd.upX>rh.tltvX>td.xJvJ.I 22

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    v

    How are colors produced in fireworks?

    rh.zDwz.k;uJxD.w>tvGJ>fvJ.I 23What is the worlds largest island?

    uD;td.vX[D.cd.csXrh>uD;rEkRwzsX.vJ.I 24How much would seas rise if the Antarctic Ice Sheet melted?

    t.w.wh;xHvDRouRtbh.rh>ySH>vDRM.yD.vJ.xHutgxD.xJvJ.I 25Why is Earth mostly crater-free compared to the pockmarked moon?

    yrh>b.xd.o}wDRM.b.rEkR[D.cd.trJmzH;cd.tHRbVD;vg

    trJmzH; cd.wcDtd.xJw>vDRqX.vDRuvdmM.vJ.I 26Can an earthquake cause a tsunami?

    [D.cd.[l;k;uJxD.pl.e.rH.oh{gI 27What is the fastest surface wind ever recorded?

    [D.cd.rJmzH;cd.uvHRvXtb.w>ymyeD.tDRvXtchsuwX>

    M.rh>uvHRrEkRvJ.I 28Do things inside Earth flow?

    rh>w>zdw>vHRvXtd.vX[D.cd.ttdylRwz.,GRvDRoh{gI 29Were Earth and the moon separated at birth?rh>[D.cd.D;vgM.vDRz;zJttd.xD.oDoDtcgvHM.{gI 30Does Earth have the worst weather in the solar system?

    vXrk>tl.zdxXzdtusgrh>[D.cd.td.D;w>uwD>vX

    ttXuwX> {gI 31Have there always been continents?

    rh>uD>rd>yS>wz.td.wh>vHftHRxDbd{gI 32Does all of Earth spin at the same rate?

    rh>[D.cd.w&H;t,lmcJvXmfod;od;{gI 33How long is a day on Venus?

    vX0HeX;pf Venus M.woD,HmqH;tgvJ.I 34Which planets have moons?

    rlzsX.zJvJ.wz.td.D;tvgvJ.I 35What causes a rainbow?

    w>rEkRk;uJxD.wX>uGJRvJ.I 36

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    vi

    Can people tell when an earthquake will happen?

    rh>ySRunDwJ[D.cd.u[l;tcgzJvJ.b.w*R*R{gI 37What is the difference between stars and planets?

    q.D;rlzsX.wz.vDRqDvdmto;fvJ.I 38Will the sun ever go out?

    rh>rk>u[JxD.xDbd{gI rh>rk>td.ywkmwbsDbsD{gI 39Where do most earthquakes and volcanic eruptions occur on Earth?

    [D.cd.[l;D;upX>rh.tlwz.tgwuh>yd>z; ([l;*JR) vXw>vD>

    zJvJ.I 40How can you tell how old a mountain is?

    upX>wzsX.to;yS>xJvJ.M.ewJtDRohfvJ.I 41What is the worlds deepest lake?

    [D.cd.csXed.t,dmuwX>M.rh>ed.rEkRvJ.I 42What is the worlds largest desert?

    rJ;rk>cd.tvJ>uwX>vX[D.cd.csXrh>rJ;rk>cd.rEkRwbh.vJ.I 43How many people would it take to stretch around the world?

    ySRunDrh>zD.vdmpkD;td.u0DR[D.cd.u0;t*D>uvd.

    ySRySJR*RvJ.I 44Why do you see the lightning before you hear the thunder?

    b.rEkRexH.qdvD0>H;wcsK;ee>[lvDoD.vJ.I 45Is air mostly oxygen?

    rh>uvHRtgwuh>rh>tD;pH.uF.{gI 46How big was the largest diamond?

    w>rs>td.uwX>M.d.xJvJ.I 47Why is space black and the sky blue?b.rEkRCdrlysDtvGJ>olD;rluydmvdRtvGJ>vgtJ;vJ.I 48What percentage of the worlds water is in the oceans?

    [D.cd.txHtd.vXr;orH;tylRySJRrs;u,RvJ.I 49Will Earth always be here?

    rh>[D.cd.utd..zJtHRxDbd{gI 50

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    11111

    1. What is the hottest place on Earth?

    Count one wrong if you guessed in a paddy field in April. The hottest

    temperature ever measured was 58C in the shade in Africa in 1992.

    1I w>vD>tud>d.uwX>vX[D.cd.rh>w>vD>rEkRvJ.Ierh>qdrd.vXzJvgthjzh.w>ud>d.tuwD>D;eb.td.vXpHmysDcX.o;tcgM.ew>uur.vDRI w>ud>d.uwX>vXw>xH.M>tDRvXuD>tR_zHRuRtylRzJ 1992 eH.M.teD.xd.td.0J 58 H pJ;wH.u&h;M.vDRI

    Did you know that the coldest temperature ever measured on Earth

    was -89 Celsius, (-129 Fahrenheit) at Vostok, Antarctica, on July

    21, 1983?

    1983 eH.,lRvH 21 oDteHRw>xd.w>ck.d.uwX>w>vD>vX[D.cd.csXtHRM.td.zJbD;pwD;vXtd.vXt.w.wh;c.D;w>ck.teD.xd.td.0J = 89 pJvfpH,X.pf< (=129 zJ&H.[J;) M.eoh.ng{gI

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    22222

    2. What makes thunder?

    If you thought, Lightning! then good for you. But I had a more detailed

    answer in mind. The air around a lightning bolt is superheated to about

    five times the temperature of the sun. This sudden heating causes the

    air to expand faster than the speed of sound, which compresses the air

    and forms a shock wave; we hear it as thunder.

    2I w>rEkRk;uJxD.vDoD.vJ.Ierh>qdrd.vX?vD0>H;/M.*hRvXe*D>vDRI b.q.vX,o;ylR,td.D;

    w>pH;qXvDRwH>M>t0JM.vDRI uvHRvXtd.0;w&H;vD0>H;wz.ud>d.r;D;ud>M>rk>tw>ud> 5 q;vDRI w>ud>owl>uvmtHRtCduvHRwz.ov.vDRto;chsM>w>uvk>vJRw>tchs'D;w>tHRqD.oeH;0JuvHRD;k;td.xD.zk;0Jw>uvk>vyD(Shock Wave) (w>uvk>z;d.) vXye>[ltDRfvDoD.tod;M.vDRI

    Did you know that on average, lightning strikes occur worldwide

    about 100 times every second?

    wpJ;u;twD>ylRvD0>H;vX[D.cd.Dwbh.tw>xd.Cltd.0J 100 bsDM.eoh.ng{gI

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    33333

    3. Can rocks float?

    In a volcanic eruption, the violent separation of gas from lava produces

    a frothy rock called pumice, loaded with gas bubbles. Some of it can

    float, geologists say. Ive never seen this happen, and Im thankful for

    that.

    3I vX>wz.xD.zDoh{gIzJupX>rh.tlyd>z;xD.M.*mo0HvXtd.vXupX>rh.tltvX>zDvmwz.qD.xD.vX>tHRD;yd>z;xD.ql.ql.tCdk;td.xD.vX>vXtpJbl;D;xH

    tpH.ydvdwz.D;uvDR*mfvX>xHobSJtod;D;vX>tHRyud;tDRvXvX>xHobSJ(Pumice) vDRI ySRCkoh.ng[D.cd.yDngpH;0JvXupX>rh.tltvX>wz.tHRtusg< weDRM.xD.zD0JvDRI ,wxH.b.w>tHRuJxD.to;eDwbsDH;b.I D;,o;ckph>uD;vX,wxH.b.tCdvDRI

    Did you know that as of the year 2000, scientists estimated that

    volcanoes posed a tangible risk to at least 500 million people?

    zJ 2000 eH.ySRpJth.zdwz.ymzsgxD.0J.vXupX>rh.tltCdySR 500

    uuGJ>C.C.tw>td.rltd.vXw>b.,d.tylRM.eoh.ng{gI

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    44444

    4. Can rocks grow?

    Yes, but observing the process is less interesting than watching paint

    dry. Rocks called iron-manganese crusts grow on mountains under the

    sea. The crusts precipitate material slowly from seawater, growing about

    1 millimeter every million years. Your fingernails grow about the same

    amount every two weeks.

    4I vX>wz.d.xD.oh{gIrh>< vX>wz.d.xD.ohb.q.euqh.eDRcd;vX>d.xD.M.vDRuX.d.

    M>H;eqh.eDRuG>epkrh.uxDxD.M.vDRI vX>rJ;ueH; (Maganese) tbh.ukwz.w>xH.M>tDRvXupX>vXtd.vXyD.vJ.tcH;wz.tzDcd.M.vDRI vX>tbh.ukwz.tHRymzSd.0JyD.vJ.tw>zdw>vHRvXvDR;vXtzDcd.tCdteH.wuuGJ>M.ud.xD.0J 1 rHvHrHxX.M.vDRI erh>b.xd.o}wDRuG>M.epkrh.uxDxD. 1 rHvHrHxX.M.,Hm.xJcHEGH{dRvDRI

    Did you know that the oldest rocks on the ocean floor are less than

    300 million years but the oldest continental rocks are 4.5 billion

    years old?

    vX>to;yS>uwX>vXr;orH;tcH;

    M.teH.td.0JtuuGJ> 300 eH.b.q.vX>to;yS>uwX>vXuD>rd>yS>tylRM.td.0JteH. 4I5 uxduuG>M.eoh.ng{gI

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    55555

    5. How much space dust falls to Earth each year?

    Estimates vary, but scientists say at least 1 billion grams, or roughly

    1,000 tons of material enters the atmosphere every year and makes its

    way to Earths surface. One group of scientists claims microbes rain

    down from space, too, and that extraterrestrial organisms are respon-

    sible for flu epidemics. Theres been no proof of this, and Im not

    holding my breath.

    5I weH.b.weH.w>url.vXrlysDHvDRql[D.cd.xJvJ.I

    w>w,mtDRvXwfod;vdmto;b.I b.q.ySRpJth.zdwz.pH;0JvXtpSRuwX>w>url.utd.0J 1}uJ. (rf) D;ud;eH.J;M.w>zdw>vHRtw.vXtuxdC.C.vJREkmqluvHRuxXtusgD;vJRwkR0J.vX[D.cd.trJmzH;cd.M.vDRI ySRpJth.zdtd.wl.pH;0JvXw>rl_yHuH(Microbes) wz.u[JvDRvXrlysDD;w>oh.wz.tHRuk;td.xD.w>b.orkmM.vDRI w>*h>tHRw>tk.o;wtd.b.I emuh,Jk,wuDRu

    ogb.I

    Did you know that the Earths surface area covers 510,100,000

    square kilometers or196,950,711 square miles?

    [D.cd.trJmzH;c d.tvJ>txDtd.0J510

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    66666

    6. How far does regular dust blow in the wind?

    A 1999 study showed that African dust finds its way to Florida and

    can help push parts of the state over the prescribed air quality limit for

    particulate matter set by the U.S. Environmental Protection Agency.

    The dust is kicked up by high winds in North Africa and carried as high

    as 20,000 feet (6,100 meters), where its caught up in the trade winds

    and carried across the sea. Dust from China makes its way to North

    America, too.

    6I w>url.rk>qh.rk>*DRHvXuvHRusg,HRxJvJ.IzJ 1999 eH.w>ymzsgwcgtylRpH;0JvXuvHRtlHw>url.vXtR_zHRuRqlzvd>&H>. (Florida) uD>pJ.vXttd.vXuD>trJ&uRohvDRI w>url.tHRb.w>tlxD.tDRvXuvHRxD.xD( High Winds) qluvHRpd;tR_zHRuRD;HxDxD.wkRvX 20 (6url.tHRb.o*X>vdmto;D;uvHRuRw> (TradeWinds) M.pdmcDtDRqlyD.

    vJ.0>b;cDM.vDRI w>url.vXttd.vXw%l;uD>wz.H0JwkRqltrJ&uRuvHRpd;ohph>uDd;vDRI

    Did you know that tornadoes can have windspeeds up to 500 km

    per hour (300 mph)?

    uvHRrk>w0H; (Tornadoes) we.&H.tlw>chswkRvX 500 uHvdrHxX.M.eoh.ng{gI

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    77777

    7. What is the most rain to fall in just one minute?

    In 1970, nearly 4 cm (about 1.5 inches) of rain fell in 60 seconds on

    the island of Guadeloupe in the West Indies. It must have been like

    standing under a waterfall.

    7I wrH;eH;twD>ylRw>plRtguwX>xJvJ.IzJ 1970 eH.< uD>th,.rk>Ekm< uD;uG..vl;yh. (Guadeloupe) tylRw>plRvXttd. 4 pJ;xH.rHxX. (1I5) pkrk>d.M.plRvDR0J.xJvX 60 pJ;u;twD>ylRvDRI w>tHRuvDR*mfy*JRqXxX.vXxHvDRqltzDvmtod;vDRI

    Did you know that the highest waterfall in the world is Angel Falls in

    Venezuela and its water drops 979 meters or 3,212 feet?

    thuFX. (Angel) xHvDRqlvXtrh>xHvDRqltxDuwX>vX[D.cd.csX[D.cd.uzsX.{gIrh>vX[D.cd.w&H;tCd< [D.cd.tHRrRto;< qDwvJto;uohtgM>e

    qdurd.vDRI [D.cd.tHRuuzdxD.0J.zJtcX.o;D;uvDR*m0J.fvl>cho.tod;M.vDRI vXtylRuGHmteH.wu,RM.tuzdwz.pSRvDR0Jb.q.ySRCkoh.ngw>wz.ymzsg0J.vXowl>uvmcJtHRM.[Jd.xD.uguhRM.vDRI tH.uUxX.[Jd.xD.M.ySRymw>ur.vXxHvDRouRusdwz.ySH>vDR0JchschstCdM.vDRI

    Did you know that it is about 6,378 kilometers from the surface of

    Earth to the center?

    [D.cd.trJmzH;cd.D;qlto;uH>

    M.td.0J 6

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    99999

    Did you know that the gravity on Mars is 38 percent of that found

    on Earth at sea level so a 100-pound person on Earth would weigh

    38 pounds on Mars?

    9. How long is a Martian year?

    Its a year long, if youre from Mars. To an earthling, its nearly twice

    as long. The Red Planet takes 687 Earth days to go around the sun

    compared with 365 days for Earth. Taking into account Mars different

    rotational time, calendars on Mars would be about 670 days long with

    some leap days needed to keep things square. If you find one, please

    mail it to me. Im curious how they worked out the months, given they

    have two moons.

    9I rlzsX.vXtbl;uwX>D;[D.cd. (rh) rg(pf) M.weH.,HmxJvJ.Ierh>td.b.vX rg(pf) tylRM.weH.urh>eH.vXt,HmtxDr;weH.vXe*D>vDRI rhrh>ySRtd.vX[D.cd.wz.t*D>u,Hm0JcHq;M.vDRI rh>b.xd.o}wDRM.[D.cd.w&H;rk>,Hm 365 oDrhrh> rg(pf) rh>td.b.zk;D;tvHmeH.vHmvgvDRqDM.weH.utd.0J 670 oDCkmD;eH.d.toDpSRoDfod;urRb.vdmeHRwz.t*D>vDRI erh>xH.t0Joh.tvHmeH.vHmvgD;qSXM>,R

    ph>uD;wuh>I rh>vXt0Joh.tvgtd. 2 bh.tCd,tJ.d;oh.ngrh>t0Joh.qDvDRtvgwz.fvJ.M.vDRI

    rg(pf) Mars tw>xk;CXM.xJod;'.[D.cd.tyD.vJ.rJmzH;cd.tw>xk;CX 38rs;u,RvDRI tCdySRvXttd. 100 yD.vX[D.cd.w*RM.vX rg(pf) tylRM.utd.'.xJ 38 yD.M.eoh.ng{gI

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    1010101010

    10. How long is the average Martian day?

    A Martian can sleep (or work) an extra half-hour every day compared

    to you. Mars days are 24 hours and 37 minutes long, compared with

    23 hours, 56 minutes on Earth. A day on any planet in our solar system

    is determined by how long it takes the world to spin once on its axis,

    making the sun appear to rise in the morning and sending it down in the

    evening.

    10I rg(pf) tylRrk>eHRweHRxDxJvJ.I

    rh>b.xd.o}wDRD;[D.cd.M. rg(pf) tylRud;eHRJ;erRw>rhwrh>rHtgM>30 rH;eH;ohvDRI rg(pf) weHR,Hm 24 e.&H. 37 rH;eH;D;vX[D.cd.M.utd.0J 23 e.&H. 58 rH;eH;vDRI vXyrk>tl.zdxXzdtusgrlzsX.ud;zsX.J;teHRweHRM.b.w>xd.G;tDRcDzsdt0Joh.w&H;vXtup>.0JtusH.vdRw0D,HmxJvJ.'D;vXuk;td.zsgxD.rk>[JxD.vXrk>*DRD;vDREkmuguhRvX[gcDvDRt*D>M.vDRI

    Did you know that from Mars, Earth would be

    seen to go through distinct phases like the moon

    is seen from Earth?

    erh>td.vX rg(pf) D;uG>[D.cd.M.uvDR*mfetd.vX[D.cd.D;xH.b.vgtd.D;tuh>t*DRvDRqDvXwuwD>D;wuwD>tod;M.eoh.ng{gI

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    1111111111

    11. What is the largest volcano?

    The Mauna Loa volcano in Hawaii holds the title here on Earth. It rises

    more than 50,000 feet (9.5 miles or 15.2 kilometers) above its base,

    which sits under the surface of the sea. But thats all volcanic chump

    change. Olympus Mons on Mars rises 16 miles (26 kilometers) into

    the Martian sky. Its base would almost cover the entire Shan state.

    11I upX>rh.tltd.uwX>rh>upX>rh.tlrEkRvJ.Ir.,le.vdR (Mauna Loa) upX>rh.tlvXtd.vX[.0.,H. (Hawaii)

    uD;tylRM.rh>upX>rh.tltd.uwX>vX[D.cd.tHRvD RI td.ol.vDRto;vXyD.vJ.tcH;D;vXtcD.xH;qltzDcd.M.tupDRxD.td.0J50< 9I5 rH;vm (rh ) 15I2 uHvdrHxX.vDRI b.q.upX>rh.tlcJvXmM.td.txDqDwvJxDbdvD RI td.vH.zX;rd (OlympusMons) vX rg(pf) tylRM.upDRxD.0J.ql rg(pf) trluydmvdR 16 rH ;vm (26 uHvdrHxX.) D;tcD.xH;M.xJod;D;,dRuD>pJmDwbh.M.vDRI

    Did you know that about 540 volcanoes on land are known to have

    erupted in historic time? No one knows how many undersea

    volcanoes have erupted through history.

    vXw>pH.pdRwJpdRtylRw>oh.ng0J.vXupX>rh.tl 540 zsX.vXttd.vXcdolcd.tzDcd.yd>z;xD.wh>0J.M.rh>eoh.ng{gI rhrh>upX>rh.tlvXyD.vJ.tzDvmyd>z;xD.0J.qH;tgvJ.M.ySRwoh.ngeDw*Rb.I

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    1212121212

    12. What was the strongest earthquake in recent times?

    A 1960 Chilean earthquake, which occurred off the coast, had a

    magnitude of 9.6 and broke a fault more than 1,000 miles (1,600

    kilometers) long. An earthquake like that under a major city would

    challenge the best construction techniques.

    12I [D.cd.[l;tql.uwX>vXtuJxD.o;zJw,Hmb.twD>ylRM.rh>zJvJ.wcgvJ.I[D.cd.[l;vXtuJxD.wh>vHto;vXcFHvHyD.vJ.uX>eHRzJ 1960

    eH.M.teD.xd.td. 9I6 D;k;td.xD.0J[D.cd.wJRz;xDvXtxDtd.1000 rH;vm (1600 uHvdrHxX.) M.vDRI [D.cd.[l;fod;wcgtHRrh>uJxD.b.zk;vX0h>z;d.wzsX.tzDvmM.w>ol.xD.vXtwvDRySD>b.M.wtd.b.I tCdw>tHRrh>w>vXtwRw>D;pdRoDw>ol.xD.bSDxD.tusdRtusJt*hRuwX>wz.M.vDRI

    Did you know that the worlds deadliest recorded earthquake oc-curred in 1557 in central China, killing an estimated 830,000 people?

    [D.cd.Dbh.w>rReD.ySRoHp&Dw>ymzsgtylR[D.cd.[l;vXw%l;uD>cX.o;zJ1557 eH.M.ySRoH0J 830eoh.ng{gI

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    1313131313

    13. Has the moon always been so close?

    It used to be much closer! A billion years ago, the moon was in a

    tighter orbit, taking just 20 days to go around us and make a month. A

    day on Earth back then was only 18 hours long. The moon is still

    moving away about 1.6 inches (4 centimeters) a year. Meanwhile,

    Earths rotation is slowing down, lengthening our days. In the distant

    future, a day will be 960 hours long!

    13I rh>vgbl;D;[D.cd.xDbd{gI

    vXtylRuGHmM.bl;M>tcJtHRvDRI D;zJtylRuGHmteH. 1M.vgtrlzsX.usdRtH.D;w&H;0J.[D.cd. 20 oD0;w0DD;w>tHRyud;vXwvgM.vDRI tcgzJM.vX[D.cd.woD,Hm.xJ 18 e.&H.vDRI weH.M.vgok;,HRxD.to;D;rk> 1I6 pkrk>d. (4 pJ;xH.rHxX.) tCd[D.cd.w&H;o;u,DvDRD;rk>eHRwz.xDxD.0J.M.vDRI rk>eHRvXu[Jqlngwz.woDM.u,Hm0J. 960 e.&H.M.vDRI

    Did you know that the Moon is about one-quarter the size of Earth?

    vgM.xJod;Dd;[D.cd.vGH>ylwylM.eoh.ng{gI

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    1414141414

    14. Do earthquakes sing?

    Not really, but they do make an incredible sound. The Earth rings like

    a bell after a large earthquake the lowest ring tone is E flat in the 20th

    octave below middle C.

    14I [D.cd.[l;o;0H.w>{gIwvDRwH>b.I b.q.t0Joh.k;td.xD.w>uvk>vXwvDRemb.wcgohvDRI [D.cd.[l;z;d.wcg0HRtvD>cHw>uvk>uoD.xD.fXvGJoD.tod;'D;w>uvk>tvDRuwX>rh>0JE Flat vXtd.vXwe>ySD>pkt MiddleC tvD>cH< cHqHbdwbdM.vDRI

    Did you know that around 1400 earthquakes rock the planet every

    day, or roughly one earthquake every minute?

    ud;eHRJ;[D.cd.[l;0J 1400 bsDrhwrh>wrH;eH;wbsDM.eoh.ng{gI

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    1515151515

    15. What is the wettest place on Earth?

    Lloro, Colombia, averages 523.6 inches of rainfall a year, or more

    than 13 meters. Thats about 2 or 3 times more rain than the wettest

    areas of Burma or Thailand.

    15I w>vD>tb.pD.uwX>vX[D.cd.M.rh>w>vD>rEkRvJ.ItJvfvd&d. (L-loro) vXttd.vXcd.v.bH.,.M.weH.w>plRxHtw>xd.Cltd.0J 523I6 pkrk>d.rhwrh>tgM> 13 rHxX.vDRI w>plRtgM>H;w>vD>vXrlcd.plRttguwX>uD>y,DRrhwrh>uD>uFD.wJ.cHq;qloXq;tzDcd.vDRI

    Did you know that Arica, in Chile is the driest place on Earth and

    gets just 0.76 millimeters of rain per year. At that rate, it would

    take a century to fill a coffee cup?

    t.&H.u. (Arica) vXtd.vXuD>cFHvHM.rh>w>vD>tChxDuwX>vX[D.cd.

    'D;weH.d;M>b.w>plRxHxJ 0I76 rHvHrHxX.vDRI w>rh>plR.fM.M.teH.wu,Rr;xHuySJRcDzH.cG;wzsX.vDRM.eoh.ng{gI

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    1616161616

    16. Which of Earths oceans is the largest?

    The Pacific Ocean covers 64 million square miles (165 million square

    kilometers). It is more than two times the size of the Atlantic. It has an

    average depth of 2.4 miles (3.9 kilometers).

    16I r;orH;tvJ>uwX>vX[D.cd.rh>r;orH;zJvJ.wbh.vJ.IypH;zh;r;orH;M.tvJ>txDtd.0J. 64 uuGJ>puGJ,grH;vm (165uuGJ>puGJ,guHvdrHxX.) D;d.M>tJ;wvJwh;r;orH;cHq;'D;t,dmtw>xd.Cltd.0J 2I4 rH;vm (3I9uHvdrHxX.) vDRI

    Did you know that by size and volume the Caspian Sea, located

    between southeast Europe and west Asia is the largest lake in the

    world?

    cJ;pyH,gyD.vJ.vXttd.vX,l&yRrk>xD.uvHRxH;D;rk>Ekmth%SX.tbX.pXRM.rh>b.uG>vXtvJ>txDD;tw>wX>ySJRM.rh>ed.vXtd.uwX>vX[D.cd.csXM.eoh.ng{gI

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    1717171717

    17. What plant can live for thousands of years?

    The creosote bush, which grows in the Mojave, Sonoran, and

    Chihuahuan deserts, has been shown by radiocarbon dating to have

    lived since the birth of Christ. Some of these plants may endure 10,000

    years, scientists say. If only they could talk.

    17I w>rk>w>bdrEkRwuvkmvXttd.rlohwkRteH.wuxdvJ.Ic&H.td.pd; (Creosote) wySDmvXtrJxD.0J.vXrd.[.bh> (Mojave)0> (Chihuahuan) rJ;rk>cd.wz.tzDcd.

    M. (radio carbon dating) ymzsgxD.wh>0J.vXwySDmtHRtd.wh>vH0J.vXc&Hm[Jtd.zsJ.tqXuwD>vHM.vDRI ySRpJth.zdwz.pH;0JvXw>rk>w>bdwz.weDRtd.rl0J.wkRvXteH.wuv;M.vDRI w>rk>w>bdwz.wJw>rh>ohkuwJb.ySRvXtw>vJRcDzsdwz.D;urh>w>vXtuJbsK;uJzSd.d.r;vDRI

    Did you know that about one-third of the Earths land surface is

    desert?

    [D.cd.rJmzH;cd.oXylwylrh>rJ;rk>cd.M.eoh.ng{gI

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    1818181818

    18. What is the highest mountain?

    Climbers who brave Mount Everest in the Nepal-Tibet section of the

    Himalayas reach 29,035 feet (nearly 9 kilometers) above sea level. Its

    height was revised upward by 7 feet based on measurements made in

    1999 using the satellite-based Global Positioning System.

    18I upX>vXtxDuwX>M.rh>upX>rEkRwzsX.vJ.IySRvXtxD.b;upX>tJ;b&J;wzsX.vXttd.vXeHzDvfD;wHbJ;uD>M.vXt*D>vDR*mfttd.vXyD.vJ.rJmzH;cd.vXtxD 29 (9

    uHvdrHxX.) tzDcd.vDRI zJ 1999 eH.M.w>ol0J.rlzsX.dtw>qDvDRymvDR[D.cd.tusJuylRD;xd.uG>uguhRM.w>xH.vXupX>tHRxDM>tylRuGHm 7 cD.,D>vDRI

    Did you know that the greatest ocean known depth is 36,198 feet

    or 11 kilometers at the Mariana Trench, in the Pacific Ocean well

    south of Japan near the Mariana Islands?

    w>vD>t,dmuwX>vXr;orH;tylRM.w>oh.ngtDRvXtrh>r.&H.,gegw>}wDRz;xDvXttd.vXypH;zH;r;orH;vX,y.uD>tuvHRxH;bl;D;r.&H.,geguD;D;t,dmtd.0J 36< 198cD.,D>rhwrh> 11 uHvdrHxX.M.eoh.ng{gI

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    1919191919

    19. Is it possible to drill a hole to the center of the earth?

    The deepest hole ever drilled has a depth of 12 km (8 miles), so far,

    2003. Progress is slow because the drill tip quickly gets blunt and

    lifting 12 km of drill out to replace it takes ages. This is only 0.2% of

    the radius of the Earth (6361 km, 3953 miles) so a Journey to the

    Center of the Earth is not feasible.

    19I rh>ecl.w>yllRql[D.cd.to;uH>M>{gIw>ylRt,dmuwX>vXb.w>cl.wh>tDRzJ 2003 eH.M.,dm0J 12 uHvdrH

    xX. (8 rH;vm) vDRI rh>vXx;ysHmvXw>cl.w>ylRtue.vlRchsD;b.xk;xD.uguhRx;ysHmvXttd.vXw>ylR,dm 12 uHvdrHxX.wbdtHRvXuqDwvJx;ysHmtcd.toDt*D>M.,HmvXteH.wz.teH.tCdw>zH;w>rRtHRvJRto;u,DvDRI yrh>uG> 12 uHvdrHxX.M.td..[D.cd.t[D.z;ulmxJ 0I2 rs;u,R< (6361 uHvdrHxX.< 3953 rH;vm) vDRItCdvHmw>wJvXtrh>w>vJRql[D.cd.to;uH> a Journey to thecenter of the Earth M.uJxD.o;wohb.I

    Did you know that the Earths crusts average thickness is 35 km

    (22 miles) under continents and 6 km (4 miles) under oceans? As a

    comparison, it is roughly like a postage stamp stuck on a football.

    [D.cd.bh.ukwD.tw>xd.Cl 35uHvdrHxX. (22 rH;vm) M.td.vXuD>rd>yS>tzDvmD; 6 uHvdrHxX.(4 rH;vm) M.td.vXr;orH;tzDvmvDRI rh>b.xd.o}wDRuG>M.uvDR*m'feus;vDRw>*DRcd. Stamp wbh.vX

    bDvfwzsX.tzDcd.tod;M.eoh.ng{gI

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    2020202020

    20. Which of the following sources stores the greatest volume

    of fresh water worldwide: lakes, streams or ground water?

    Groundwater comprises 30 times greater volume than all freshwater

    lakes, and more than 3,000 times whats in the worlds streams and

    rivers at any given time. Groundwater is housed in natural underground

    aquifers, in which the water typically runs around and through the stone

    and other material.

    20I ed.< xHzdusdrhwrh>[D.vmxHwz.tusgzJvJ.wcgymzSd.xHbsgM>tg

    u wX>vJ.I[D.vmxHymzSd.xHbsgtgM>ed.xHuqSDcJvXmtbsDoXqHD;tgM>[D.cd.csXtxHzdusdD;xHusdwz. 3xHpSH >wz.tylR< vXxH,GRw&H;tDR'D;,GRcDzsd0JvX>D;w>zdw>vHRt*Rwz.vDRI

    Did you know that the Nile River in Africa is 6,695 kilometers long

    making it the longest river in the world?

    eJvfxHusdvXtd.vXuD>tR_zHRuRM.rh>xHusdtxDuwX>vX[D.cd.csX'Dd;txDtdd.0J 6

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    2121212121

    21. What is the largest canyon?

    The Grand Canyon in America is the worlds largest canyon system.

    Its main branch is 277 miles (446 kilometers) long. But lets compare.

    Valles Marineris on Mars extends for about 3,000 miles (4,800

    kilometers). (If it were added to an Asia map, it would stretch from

    Burma to Japan. In places this vast scar on the Martian surface is 5

    miles (8 kilometers) deep.

    21I w>}wdt'dd.uwX>rh>w>}wdrEkRvJ.I

    }uJw>}wd(The Grand conyon) vXuD>trJ&uRtylRM.rh>w>}wdt'd.uwX>vX[D.cd.csXvDRI w>}wdtrd>yS>M.xD0J 277 rH;vm< (446 uHvdrHxX.)vDRI b.q.yuxd.o}wDRuG>bhvfr.&H.eX.&Hpf (VallesMarineris vXtd.vX rg(pf) M.ov.vDRto;td.0J 3vXth%SX.[D.cd.*DRM.< utd.xJod;D;uD>y,DRql,y.uD>M.vDRI w>vDRuvdmtHRvX rg(pf) trJmzH;cd.

    M.,dm0J 5 rH;vm (8 uHvdrHxX.)vDRI

    Did you know that Antarcticais the highest, driest, and coldest

    continent on Earth?

    tJ.w.wH;c.rh>uD>rd>yS>vXtupDRxD.xDuwX>< w>ChxDuwX>'D;w>ck.uwX>vX[D.cd.M.eoh.ng{gI

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    2222222222

    22. How much of Earths surface consists of volcanic rock?

    Scientists estimate that more than three-quarters of Earths surface is

    of volcanic origin that is, rocks either erupted by volcanoes or molten

    rock that cooled below ground and has subsequently been exposed at

    the surface. Most of Earths volcanic rocks are found on the sea floor.

    22I [D.cd.rJmzH;cd.upX>rh.tltvX>td.xJvJ.IySRpJth.zdwz.w,;0JvX[D.cd.rJmzH;cd.w>vD>oXylbsJ.M.rh>upX>rh.tlwz.vDRI w>oh.wz.tHRrh>upX>rh.tltvX>vXt[JxD.zJupX>

    rh.tlyd>z;xD.rhwrh>vX>ySH>vDRvXtck.'D;uJxD.vX>vX[D.cd.zDvmwz.vXcH[Jyd>z;xD.0J'.qlw>csXM.vDRI [D.cd.tupX>rh.tltvX>wz.tgwuh>b.w>xH.M>tDRvXyD.vJ.tcH';M.vDRI

    Did you know that the three countries with the greatest number ofhistorically active volcanoes are Indonesia, Japan and the United

    States?

    vXw>pH.pdRwJpdRtylRxHuD>oXbh.vXb.uG>qX.rJmupX>rh.tltw>[l;*JRttguwX>rh>tH.'d.eHSg< ,y.tvGJ>fvJ.I[D.vmyeH.*mpDvXt[;xD.vX[D.cd.M.k;uJxD.w>tvGJ>wz.vDRIp}wdxH.,X. (Strontium) [h.xD.tvGJ>*DR< wd>*DR (Copper) xk;xD.

    tvGJ>vgtJ;< tHo. (Sodium) xk;xD.tvGJ>bD< x;D;oGJ.v;tud.vd.wz.xk;xD.0Jrh.tltzDyh>bDbDfxltvGJ>tod;wz.vDRI rh.tlujyh>D;w>uvk>z;d.wz.uJxD.o;cDzsdtvl.rH.eH.,.turl.vDRI

    Did you knowtalc is the softest of minerals? It is commonly used tomake talcum powder.

    Talc rh>[D.vmyeH.tuykmuwX>D;nDEk>w>oltDRvXw>uk;uJxD.

    Talcum turl.t*D>M.eoh.ng{gI

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    2424242424

    24. What is the worlds largest island?

    Greenland covers 840,000 square miles (2,176,000 square kilometers).

    Continents are typically defined as land masses made of low-density

    rock that essentially floats on the molten material below. Greenland fits

    this description, but its only about one-third the size of Australia. Some

    scientists call Greenland an island, others say its a continent.

    24I uD;td.vX[D.cd.csXrh>uD;rEkRwzsX.vJ.I}uHefvJtvJ>txDtd.0J 840wz.nDEk>w>ymzsgtcDynD'ftrh>[D.cd.ud.vd.vX[JuJxD.vXvX>vXtw>wH>Cg (Density) pSRvXxD.zDvXw>zdw>vHRvXtySH>vDRvXw>zDvmtzDcd.vDRI }uHefvJM.vDR*mD;w>ymzsgtcDynDt0JtHR< b.q.utd.xJod;.tD;p-xhv,.oXylwylvDRIySRpJth.zdweDRud;}uHefvJvXuD;D;t*Rwz.pH;vXrh>uD>rd>yS>vDRI

    Did you know that nearly 70 percent of the Earths fresh-water

    supply is locked up in the icecaps of Antarctica and Greenland?

    [D.cd.txHbsg 70 rs;u,RC.C.td.wH>CmvXt.w.wh;c.D;}uHefvJxHck.ubs.tusgM.eoh.ng{gI

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    2525252525

    25. How much would seas rise if the Antarctic Ice Sheet melted?

    The Antarctic Ice Sheet holds nearly 90 percent of the worlds ice and

    70 percent of its fresh water. If the entire ice sheet were to melt, sea

    level would rise by nearly 220 feet, or the height of a 20-story building.

    Scientists know theres a melting trend under way. The United Nations

    has said that in a worst-case scenario depending on how much

    global air temperatures increase seas could jump 3 feet (1 meter)

    by 2100.

    25I t.w.wh;xHvDRouRtbh.rh>ySH>vDRM.yD.vJ.xHutgxD.xJvJ.I[D.cd.csXxHck.ud.vd. 90 rs;u,RM.rh>t.w.wh;xHvDRouRD; 70rs;u,RM.rh>xHbsgvDRI xHvDRouRtbh.Dwcgrh>ySH>vDRM.yD.vJ.rJmzH;cd.uupDRxD. 220 cD.,D>rhwrh>uupDRxD.xJod;w>ol.xD. 20uxXwzsX.M.vDRI ySRpJth.zdwz.oh.ng0JvXxHck.ud.vd.wz.p;

    xD.ySH>vDR0J.vHM.vDRI [D.cd.bDrk>pXzSd.u&XpH;0JvXw>*h>ttXuwX>M.zJ 2100 eH.yD.vJ.rJmzH;cd.xHutgxD. 3 cD.,D>'D;w>*h>wcgtHRd;oMRxD.to;vX[D.cd.uvHRtw>ud>w>ck.tgxD.xJvJ.tzDcd.vDRI

    xHb.w>oltDRvX[D.cd.Dbh.weHRtw>xd.Cltd.0J 400 ubDu.v.M.eoh.ng{gI

    Did you know that on average, about 400 billion

    gallons of water is used worldwide each day?

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    2626262626

    26. Why is Earth mostly crater-free compared to the pockmarked

    moon?

    Earth is more active interms of both geology and weather. On Earth -

    craters that can be millions of years old get overgrown by vegetation,

    weathered by wind and rain, and modified by earthquakes and

    landslides. The moon, meanwhile, is geologically quiet and has almost

    no weather; its craters tell a billion-year-long tale of catastrophic

    collisions.

    26I yrh>b.xd.o}wDRM.b.rEkR[D.cd.trJmzH;cd.tHRbVD;vgtrJmzH;cd.wcDtd.xJw>vDRqX.vDRuvdmM.vJ.Iyrh>uG>M.[D.cd.tHRtd.D;tw>[l;w>*JRvX[D.GJyDngD;rlcd.uvHRoD.*DRwuyRtgM>H;vgM.vDRI ylRuGHmteH.vXtuuGJ>wz.M.[D.cd.tzDcd.w>vDRqX.wz.td.0Jb.q.cDzsdvXw>rk>w>bdwz.rJxD.cJbXuGHmtDRrh>*hR< cDzsdrlcd.uvHRoD.*DRtw>qDwvJrh>*hR[D.cd.[l;D;

    [D.cd.vDRvmwz.tCdk;td.xD.[D.cd.rJmzH;cd.tw>qDwvJM.vDRIb.q.vgtzDcd.M.cDzsdvX[D.cd.rJmzH;cd.tw>qDwvJwtd.D;w>qXuwD>wtd.eDwrHRb.tCdw>vDRqX.wz.tHRtd.H;.w>D;zsgvXtwJzsgxD.0Jw>uJxD.o;vXtylRuGHmteH.vXtuuGJ>wz.t*h>M.vDRI

    Did you know that the Earth

    travels at more than 105,000kph or 29.17 km/s, covering

    millions of miles each year as it

    journeys through space?

    we.&H.[D.cd.vJRw>tgM>H;105wpJ;u;

    tgM> 29I17 uHvdrHxX.'D;vJRw&H;rlysDweH.M>rH;vmvXtuuGJ>M.eoh.ng{gI

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    2727272727

    27. Can an earthquake cause a tsunami?

    If the earthquake originates under the ocean, yes. Near the earthquakes

    epicenter, the sea floor rises and falls, pushing all the water above it up

    and down. This motion produces a wave that travels outward in all

    directions. A tsunami can be massive but remain relatively low in height

    in deep water. Upon nearing the shore, it is forced up and can reach

    the height of tall buildings. One in December 26th, 2004 was triggered

    by an earth quake off the coast of Sumatra in Indonesia which carried

    waves all the way to Thailand, India and even as far as East Africa.

    Asteroids can cause tsunami, too.

    27I [D.cd.[l;k;uJxD.pl.e.rH.oh{gI[D.cd.[l;tcD.xH;rh>uJxD.to;vXr;orH;tzDvmM.k;uJxD.pl.e.rH.ohvDRI bl;D;[D.cd.[l;uJxD.tvD>t*H>xH;M.< yD.vJ.xHupH.yDykzDcd.D;uvDRwJmuhRvDRI w>[l;w> *JRtHRuk;td.xD.vyDD;uov.vDRto;qlw>vD>oukRM.vDRI pl.e.rH.M.d.b.q.zJttd.vXxH,dmtcgM.tvyDwxDb.I wkRtwkRvXxHuX>eHRM.ozSdxD.to;D;vkmbX0J.w>ol.xD.z;xDwz.oh0JvDRI 2004eH.vg'H.pJbX.26 teHR[D.cd.[l;vXuD>tH.'d.eH%SguD;pl.r.-w.tylRtCd'k;td.xD.0Jpl.e.rH.'D;vyDwz.vJRwkR0JqluD>uFD.wJ.< uD>th',.'D;qlrk>xD.tR_zHRuR'.vJmM.vDRI rlzsX._yHwz.rh>vDRwJmqlyD.

    vJ.ylRM.'k;uJxD.pl.e.rH;ohph>uD;vDRI Did you know that most tsunami waves

    come onshore more like very strong and

    fast tides and not giant breaking waves?

    pl.e.rH.vyDwz.tgwuh>wkRt[JwkR

    xHHuX>eHRM.ql.d.r;< txHxD.xHvDRM.chs'D;wrh>vyDz;'d.vXt[JwzsX.wzsX.b.M.eoh.ng{gI

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    2828282828

    28. What is the fastest surface wind ever recorded?

    The fastest regular wind thats widely agreed upon was 231 mph

    (372 kilometers per hour), recorded at Mount Washington, N.H., on

    April 12, 1934. But during a May 1999 tornado in Oklahoma,

    researchers clocked the wind at 318 mph (513 kilometers per hour).

    For comparison, Neptunes winds can rage to 900 mph (1,448

    kilometers per hour).

    28I [D.cd.rJmzH;cd.uvHRvXtb.w>ymyeD.tDRvXtchsuwX>M.rh>

    uvHRrEkRvJ.IuvHRtlw>vXtb.w>ymyeD.tDR'ftrh>uvHRtcsuwX>M.w>rReD.wh>tDRzJupX> Washington, NH zJ 1934< thjzh. 12 oDeHRvDdRI uvHRtchsuwX> regular uvHRrk>< we.&H.tlw> 231 rHxX. (372 uHvdrHxX.) b.q.zJvgrhR 1999 eH.M.uvHRrk>o0H;vXttlw>zJ(oklahoma) M.ySRCkoh.ngw>wz.ymzsg0JvXwe.&H.tlw> 31*

    rHxX.rhwrh> 513 uHvdrHxX.vDRI yrh>b.xd.o}wDRuG>M.uvHRvXttlw>vXrlzsX.eJ;yuFL. Neptunes M.we.&H.tlw> 900rHxX.rhwrh> 1448 uHvdrHxX.ngvDRI

    Did you know that Debris flows are like mud avalanches and can

    move at speeds in excess of 160 kilometers per hour?

    Debris uyHmxH,GRwz.vDR*mfuyHmxH[Jovl.vDRo;vXu

    pX>cd.tod;D;we.&H.M.vJRw>chs0J 160 uHvdrHxX.M.e

    oh.ng{gI

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    29. Do things inside Earth flow?

    You bet. In fact, scientists found in 1999 that molten material in and

    around Earths core moves in vortices, swirling pockets whose dynamics

    are similar to tornadoes and hurricanes. And as youll learn later in this

    list, the planets core moves in other strange ways, too.

    29I rh>w>zdw>vHRvXtd.vX[D.cd.ttdylRwz.,GRvDRoh{gIrh>< zJ 1999 eH.ySRpJth.zdwz.xH.M>0JvXw>tyD;tvDvXtySH>vDRvXttd.0;w&H;[D.cd.to;uH>ylRD;tcsXwz.[l;0;D;w&H;0J.D;t

    o[D.M.vDR*mD;uvHRrk>o0H;D;uvHRrk>[.&H.uh (Hurricanes) wz.vDRI fw>zdw>vHRwz.w&H;[D.cd.tod;M.[D.cd.to;uH>ph>uD;w&H;vXusJvDRqDt*Rwbdt*h>M.vXcHeurRvdb.M.vDRI

    Did you know that the temperature of Earth increases about 20

    degrees Celsius for every kilometer you go down? Near the

    center, its thought to be at least 3,870 Celsius.

    [D.cd.tw>ud>tgxD.0J 1 uHvdrHxX.M. 20 'H.u&H.pJvfpH,X.pfzJevJRvDRql[D.cd.to;uH>'D;vXbl;'D;[D.cd.to;uH>M.w>ud>tpSRuwX>utd.0J3

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    30. Were Earth and the moon separated at birth?

    Not quite. But leading theory holds that our favorite satellite was carved

    partly from Earth shortly after the Earth formed. A Mars-sized object

    slammed into our fledgling planet. The impactor was destroyed. Stuff

    flew everywhere and a lot of it went into orbit around Earth. The moon

    gathered itself together out of the largely vaporized remains of the col-

    lision, while Earth hung in there pretty much intact.

    30I rh>[D.cd.D;vgM.vDRz;zJttd.xD.oDoDtcgvHM.{gI

    wvDRwH >b.I vgM.b.w>k;uJxD.tDRvX[D.cd.tuhtcDwz.zJ[D.cd.uJxD.wpd>zd0HRtvD>cHM.vDRI w>tud.vd.vXtxJod;D; rgpfM.[Jb.xH;vdmto;D;y[D.cd.zJttd.xD.oDoD0HRtvD>cHD;w>vXt[Jb.xH;w>wcgM.[;*DRoh.z;0JvDRI w>tuhtcDwz.,lR0hR0DRoukRD;tuhtcDtgr;wz.vJRwkRqlrlzsX.tusdRvXttd.0;w&H;[D.cd.ttd.vDRI w>tuhtcDvXtd.wz.tHRymzSd.xD.vdmto;D;

    uJxD.vgM.vDRI rhrh>[D.cd.wcDtd.ftvD>vD>tod;M.vDRI

    Did you know our planet is more than 4.5billion years old, just a shade younger than the

    sun?

    y[D.cd.tHRto;eH.tgM> 450 ubDD;to;p>M>H;rk>M.eoh.ng{gI

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    31. Does Earth have the worst weather in the solar system?

    Right now, its the worst that most humans I know ever experience.

    But theres lots of wilder weather elsewhere. Mars can whip up

    hurricanelike storms four times bigger than Burma. Dust storms on the

    Red Planet can obscure the entire globe! Jupiter has a hurricane twice

    the size our entire planet, and its lasted for at least three centuries

    (another storm on Jupiter is even bigger). Venus is a living hell, and

    Pluto is routinely more frigid than the coldest place on Earth (though

    may change one day, and Pluto may in fact become the last oasis for

    life).

    31I vXrk>tl.zdxXzdtusgrh>[D.cd.td.D;w>uwD>vXttXuwX>{gIchcgcJtHRrh>w>qXuwD>te;uwX>vX,xH.b.wh>vXySR[D.cd.zdwl>b.0JvDRI b.q.w>qXuwD>vXtue;M>t0JtHRtd.ph>uD;vDRI uvHRrk>vXtvDR*mD;[.&H.uhvXttlw>vX rgpf tylRM.d.M>uD>y,DRvGH>bsDvDRI uvHRrk>tlw>vX rgpf vXtrh>rlzsX.*DRwzsX.tylRM.w>url.wz.usX>bXuGHm[D.cd.zsX.DwzsX.ohvDRI Jupiter tuvHRrk>[.&H.uhM.d.M>y[D.cd.cHbsD< D;tlw>tpSRuwX>u,HmteH.oXu,RvDRI uvHRrk>td.wcgvX Jupiter M.d.M>t0JtHRvDRI VenusM.vDR*mD;v&m< D; pluto M.nDEk>ck.M>H;w>ck.d.u

    wX>tvD>vX[D.cd.vDRI Everyone knows thatSaturn has rings. But did

    you know that Jupiter and Neptune both have

    subtle ring systems and even Earth may once

    have been a ringed planet?

    ySRud;*RJ;oh.ng0J.vX Saturn M.td.D;

    w>tuGDRvXtvdRvDRIJupiter

    D;Neptune

    td.ph>uD;D;w>tuGDRqH;qH;zdvXyxH.tDRohD;[D.cd.emuhwbsDtd.D;w>tuGDRvXtvdRM.eoh.ng{gI

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    32. Have there always been continents?

    Not as we know them today. Many scientists figure Earth began as

    one huge continent dry as a bone. Water was delivered in comets,

    the thinking goes, and the oceans developed. Much more recently, all

    the worlds land masses were huddled into one supercontinent called

    Pangaea. It began to break up about 225 million years ago, eventually

    fragmenting into the continents as we know them today.

    32I rh>uD>rd>yS>wz.td.wh>vHftHRxDbd{gI

    wrh>fyoh.ngrk>rqgweHRtHRtod;b.I ySRpJth.zdtg*Rymzsg0JvX[D.cd.uJxD.tcD.xH;M.vDR*mfuD>rd>yS>z;vJ>wbh.tod;D;ChxD0Jfn.Chtod;vDRI w>w,;vX[D.cd.M.ud;M>xHvXq.rJ>xD.ttd.D;k;uJxD.0Jr;orH;vDRI tylRuGHmteH.wz.teH.M.[D.cd.csXDbh.t[D.cd.ud.vd.wz.b.w>ymzSd.CkmtDRfuD>rd>yS>wbh.CDvXtb.w>ud;tDRvX Pangaea M.vDRI tylRuGHmteH. 225 uuGJ>eH.M.Pangaea

    tHRoh.z;vDRrk>vDRz;D;vXcHuwX>uJxD.uD>rd>yS>wz.fyoh.ngrk>rqgweHRtHRtod;vDRI

    Did you know that if the oceans total

    salt content were dried, it would coverthe continents to a depth of 1.2 meters?

    r;orH;tHo.xHrh>ChxDuGHmM.tHo.tHRuusX>bXuD>rd>yS> 1I2 rHxX.M.eoh.ng{gI

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    3333333333

    33. Does all of Earth spin at the same rate?

    The solid inner core a mass of iron comparable to the size of the

    moon spins faster than the outer portion of the iron core, which is

    liquid. A study in 1996 showed that over the previous century, the

    extra speed caused the inner core to gain a quarter-turn on the planet

    as a whole. So the inner core makes a complete revolution with re-

    spect to the rest of Earth in about 400 years. Immense pressure keeps

    it solid.

    33I rh>[D.cd.w&H;t,lmcJvXmfod;od;{gI[D.cd.to;uH>tud.vd.vXtrh > (x;ud.vd.)vXtutd.xJod;vgM.w&H;cVM>H;w>o;uH>tcsXvXtrh> (w>txH) vDRI w>Ckoh.ngzJ 1996 eH.ymzsg0JvXtylRuGHmteH.wu,RM.w>o;uH>tylRw&H;cVxD.M>w&H;wh>0Jw0DtvGH>ylwylvDRI tCdteH. 400 twD>ylRw>o;uH>tylRtHRw&H;ucsxD.M>[D.cd.zsX.t*RDw0DM.vDRI

    Did you know much of Earth is fluid with the mostly solid skin of the

    planet averages only 35 kilometers thick thinner than the skin

    of an apple, relatively speaking.

    [D.cd.Dwbh.M.rh>xHD;tzH;vXtrh>w>toH;ud.vd.twD.tw>xd.Cl

    td.J0J 35 uHvdrHxX.vDRI tCdrh>b.wJM.[D.cd.tzH;M.blM>H;zDo.wzsX.tzH;M.eoh.ng{gI

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    3434343434

    34. How long is a day on Venus?

    A day on Venus is longer than a year on the planet! It takes Venus 243

    Earth days to rotate once on its axis but only 225 Earth days to revolve

    around the Sun.

    34I vX0HeX;pfVenus M.woD,HmqH;tgvJ.IvX0HeX;pfVenus M.woD,HmM>H;weH.vXrlzsX.vDRI 0HeX;pfw&H; vXt0.&dzDcd.u0;w0Dt*D>,HmM>[D.cd.toD 243 oDD;w&H;rk>u0; w0DM.,Hm.xJ[D.cd.toD 225 oDM.vDRI

    Did you know that Venus rotates in the opposite direction as Earth?

    On Venus, the Sun rises in the west and sets in the east!

    0HeX;pfw&H;M.cd.csXvdmo;D;[D.cd.D;vX0HeX;pfVenusM.rk>[JxD.

    vXrk>EkmD;vDREkmvXrk>xD.M.eoh.ng{gI

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    35. Which planets have moons?

    Well of course Earth has one moon but several other planets have

    moons, as well. Mars has 2, Jupiter has at least 61, Saturn at least 31,Uranus at least 25, Neptune at least 8 and Pluto has at least 1.

    Astronomers often find new moons orbiting the planets so these

    numbers may continue to rise.

    35I rlzsX.zJvJ.wz.td.D;tvgvJ.I[D.cd.tvgtd.wbh.b.q.rlzsX.t*Rtgbh.td.D;tvgwz.ph>uD;

    vDRI rgpfMars tvgtd.cHbh.< Jupiter uFL.zH.xX.tvgtpSRuwX>td. 61 bh.tvgtd. 31 bh.wbh.vDRI ySRohrluydmyDngwz.xH.M>vgtoDwz.vJRw&H;rlysDcJtHRcJtHRtCdvgwz.teD.*H>utgxD.H;0J%k>%k>vDRI

    Did you know that it takes the Moon 27.3 days to revolve around

    the Earth?

    vgw&H;[D.cd.w0D,Hm 27I3 oDM.eoh.ng{gI

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    36. What causes a rainbow?

    It takes two things to cause a rainbow: sunlight and raindrops. When

    sunlight shines through raindrops, the light is bent, and beautiful colors

    are seen against the clouds. Each color of the rainbow is made by

    many raindrops bending the light at a particular angle.

    36I w>rEkRk;uJxD.wX>uGJRvJ.Irk>w>uyDRD;w>plRxHtzsX.wz.rh>w>cHrHRvXuk;uJxD.wX>uGJRM.vDRIzJrk>tw>uyDRqJ;vDRb.xHtzsX.zdwz.D;w>uyDRqJ;uvRuhRM.e

    uxH.b.w>tvGJ>CHvRwz.zsgvXw>tX.usgM.vDRI wX>uGJRtvGJ>wcgb.wcgpkmpkmM.b.w>k;uJxD.tDRvXw>plRxHtgzsX.qJ;uvR0J.w>uyDR (fwzsX.D;wzsX.tw>vDRqDtd.tod;) M.vDRI

    Did you know that a passing cyclone once dropped nearly 4 meters

    of rain in just 24 hours on the island of Runion in the Indian Ocean

    1952? That is a world record.

    vX[D.cd.w>rReD.tylRuvHRrk>o0H;vXtplRvDR0J.vXuD; Reunion vXtd.vXth,.r;orH;tylRzJ 1952 eH.vX 24 e.

    &H.twD>ylRM.w>plRxHtd.0J 4 rH

    xX.M.eoh.ng{gI

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    37. Can people tell when an earthquake will happen?

    No, they cant. Scientists have no way to accurately predict earthquakes

    but animals might to able to. Stories tell about rats, snakes, centipedes,

    worms and beetles leaving Hellas, Greece, in droves just before a

    large earthquake in 373 B.C. It is said that in Tashkent, Uzbekistan

    1966, one hour before an earthquake, masses of ants carried their

    eggs out of their anthills.

    37I rh>ySRunDwJ[D.cd.u[l;tcgzJvJ.b.w*R*R{gI

    t0Joh.wJwb.b.I ySRpJth.zdwz.uwJqdym[D.cd.u[l;t*h>vDRwH>vDRqJ;M.wJ0Jwb.b.I b.q.q.zduD>zdwz.wJqd0Jub.wcDH;I zJwcsK;c&HmeH. 373 wcsK;[D.cd.[l;z;d.b.M.w>wJ0JvX,k>< *k>tw>td.w>qd;tvD>zJ[Jv;pfvXttd.zJ}uH;pfD;Ch>uGHmqlw>vD>t*RM.vD RI w>pH;0J.vX 1966 eH.tylRzJuD>v;pfcJef (laskent), D;tl;pfbJ.uH;pfw. (Uzbekistan) tylRwX>*D>

    rk>wz.pdmxD.0J.tH.qlw>csXwcsK;zJ[D.cd.[l;trJmngwe.&H.M.vDRI

    Did you know that most earthquakes are triggered less than 80

    kilometers from Earths surface?

    [D.cd.[l;tgwuh>p;xD.zJw>vD>vXt,HRD;[D.cd.rJmzH;cd.vXtpSRM> 80 uHvdrHxX.M.eoh.ng{gI

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    3838383838

    38. What is the difference between stars and planets?

    Planetsarent as big or as hot as stars, and they cant make light of

    their own. They were made from the leftovers of the same gas and

    dust cloud that gave birth to their nearest star.

    38I q.D;rlzsX.wz.vDRqDvdmto;fvJ.IrlzsX.wz.wd.D;wud>xJod;D;q.wz.b.I D;teD>up>tw>uyDRwtd.b.I t0Joh.b.w>k;td.xD.tDRvX*mo0HD;w>urSHRvXttd.wh>zJw>k;td.xD.q.0HRwz.M.vDRI

    Did you know that light from our star, the Sun, takes 8.3 minutes to

    reach us?

    w>uyDRvXt[JvXyq.D;rk>ttd.M.uwkRqlytd.t*D>,Hm 8I3rH;eH;M.eoh.ng{gI

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    39. Will the sun ever go out?

    One day the Sun will use up all its gas fuel and die. But this wont

    happen in your lifetime, or even your great-great-great grandchildrens!

    Astronomers think that the Sun has enough gas fuel to last for at least

    another 5 billion years.

    39I rh>rk>u[JxD.xDbd{gI rh>rk>td.ywkmwbsDbsD{gIrk>utd.0JweHRM.rk>uolvXmuGHmt*mo0HcJvXmD;uoHvDRI b.q.w>t0JtHRwrRto;zJepdRtHRD;ezdpdRvHRpdR.vJmH;b.I ySRohrluydm

    yDngwz.qdurd.0JvXcHtpSRuwX>teH. 5000 uuGJ>emuhrk>utd.H;D;t*mo0H< todvXvXySJRySJRvXuvJRw>t*D>vDRI

    Did you know that the Sun uses more than 30 million truck loads of

    fuel every second?

    wpJ;u;rk>ol0Jtrh.q.tgM>odvh.yX;w>tcd. 30 uuGJ>cd.wD0JM>M.eoh.ng{gI

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    40. Where do most earthquakes and volcanic eruptions occur

    on Earth?

    The majority occur along boundaries of the dozen or so major plates

    that more or less float on the surface of Earth. One of the most active

    plate boundaries where earthquakes and eruptions are frequent, for

    example, is around the massive Pacific Plate commonly referred to as

    the Pacific Ring of Fire. It fuels shaking and baking from Japan to

    Alaska to South America.

    40I [D.cd.[l;D;upX>rh.tlwz.tgwuh>yd>z; ([l;*JR) vXw>vD>zJvJ.I[D.cd.[l;D;upX>rh.tlyd>z;teD.*H>ttguwX>uJxD.to;zJ[D.cd.tuhtcDvXtxD.zDvX[D.cd.rJmzH;cd.wz.to&hRxH;M.vDRI [D.cd.tuhtcDwcgvXb.xH;vdmto;D;k;uJxD.[D.cd.[l;D;w>yd>z;cJtHRcJtHRM.tdt0JM.td.vXypH;zh;[D.ubs.D;nDEk>yud;tDRvXypH;zh;t

    rh.tluGDR " Pacific Ring of Fire "vDRI [D.cd.tubs.0JtHRtCdk;td.xD.[D.cd.[l;D;upX>rh.tlyd>z;wz.vX,y.uD>qlt.v;pfu.D;qluvHRxH;trJ&uRM.vDRI

    Did you know that the sound from the eruption of the Krakatau

    volcano in 1883 traveled nearly 5000 km?

    Krakatau (c&.uwD.) upX>rh.tlyd>z;toD.zJ 1883 eH.M.[l,HRwkR 5000 uHvdrHxX.M.eoh.ng{gI

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    41. How can you tell how old a mountain is?

    The shape of a mountain can tell you a lot. Mountains with sharp,

    jagged shapes are fairly young mountains only a few million years

    old! Older mountains have more rounded shapes, worn smooth by the

    wind and rain.

    41I upX>wzsX.to;yS>xJvJ.M.ewJtDRohfvJ.IcDzsdupX>tuh>t*DRM.wJeRw>uohtgr;vDRI upX>vXtcd.pltue.th.&J.to;wz.urh>.upX>o;p>D;td.H;.xJpSRuuGJ>eH.M.vDRI

    upX>vXto;yS>xD.wz.rh>vXb.uvHRw>plRxHtCdtcd.uyXRvDRD;td.bsovH;M.vDRI

    Did you know that it takes about 1,000 years to wear down a

    mountain only 8 cm?

    cDzsdw>tD.vhRuGHmw>tCdteH.wuxdM.upX>qH;vDR.xJ 8 pJ;xH.rHxX.M.eoh.ng{gI

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    42. What is the worlds deepest lake?

    Lake Baikal in the south central part of Siberia is 1.7 kilometers deep.

    Its about 20 million years old and contains 20 percent of Earths fresh

    liquid water.

    42I [D.cd.csXed.t,dmuwX>M.rh>ed.rEkRvJ.Ied. Baikal vXttd.vX Siberia uvHRxH;w>cX.o;M.,dm0J 1I7 uHvdrHxX.vDRI to;yS>0JtuuGJ> 20 eH.D;ymzSd.[D.cd.txHbsgM> 20

    rs;u,RvDRI

    Did you know that even though we have water coming out of our

    ears, only one percent of it is drinkable? Most of it is frozen or

    salty.

    xHwz.tgwuh>rh>xHvDRouRrhwrh>xH[DtCdxHrh>tgxJvJ.b.q.ytDoh.xJ 1 rs;u,RM.eoh.ng{gI

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    43. What is the worlds largest desert?

    The Sahara Desert in northern Africa is the largest desert in the world

    and covers about 7,700,000 sq km. This is about one-third of the

    whole of Africa.

    43I rJ;rk>cd.tvJ>uwX>vX[D.cd.csXrh>rJ;rk>cd.rEkRwbh.vJ.IrJ;rk>cd.tvJ>uwX>vX[D.cd.csXrh>0J (q[.&;) Sahara, rJ;rk>cd.td.vXuvHRpd;tR_zHRuRwuyR< tvJ>txDtd.0J 7vX (q[.&;) Sahara rJ;rk>cd.M.weDRxD0J 400rHxX.D;weDRxDM>t0JM.M.eoh.ng{gI

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    4444444444

    44. How many people would it take to stretch around the world?

    Its about 40,100 km around Earth from the equator. That means it

    would take 33,000,000 people holding hands to reach all the wayaround.

    44I ySRunDrh>zD.vdmpkD;td.u0DR[D.cd.u0;t*D>uvd.ySRySJR*RvJ.Ietd.vXtH.cUxX.D;w&H;[D.cd.w0DM.td.0J 40vd.ySRunDzD.vdmpk 33ymzsgD;w>ymzsgt*Rwz.M.zJ1999 eH.M.[D.cd.zdeD.*H>xD.b;wkRvXtuuGJ> 6 uxdM.eoh.ng{gI

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    45. Why do you see the lightning before you hear the thunder?

    The reason we almost always see the lightning before hearing the thunder

    is because light travels much faster than sound. Thunder and lightning

    happen in the same place at about the same time. In fact, the lightning

    produces the thunder. When lightning occurs, the nearby air becomes

    very hot and expands quickly, causing an explosion. The sound of

    thunder is really the sound of this explosion.

    45I b.rEkRexH.qdvD0>H;wcsK;ee>[lvDoD.vJ.I

    rh>vXw>uyDRvJRw>cVM>H;w>uvk>tCdwcsK;ye>[lvDoD.b.M.nDEk>yxH.qdvD0>H;M.vDRI vDoD.D;vD0>H;M.uJxD.vXw>vD>wwDRCDD;w>qXuwD>wuwD>CDvDRI teD>eD>vD0>H;k;td.xD.vDoD.M.vDRIzJvD0>H;tcguvHRvXtuydmuyRwz.ud>xD.d.d.D;ov.vDRto;cVoH;D;uJxD.w>yd>z;M.vD RI vXw>M.tCdw>yd>z;t0JtHRtoD.M.rh>vDoD.M.vDRI

    Did you know that you can tell how far away a

    storm is by counting the number of seconds

    between the lightning and the thunder? The

    storm is 1 kilometer away for every

    3 seconds you count.

    ewJuvHRrk>tlw>vXw>vD>,HRxJvJ.b.cDzsde*H>w>qXuwD>,HmtpJ;u;xJvJ.zJvD0>H;D;vDoD.tbX.pXRM.eoh.ng{gI e*H>rh>td.oXpJ;u;

    M.uvHRrk>u,HRwuHvdrHxX.M.vDRI

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    46. Is air mostly oxygen?

    Earths atmosphere is actually about 80 percent nitrogen. Most of the

    rest is oxygen, with tiny amounts of other stuff thrown in. Near the

    ground there is plenty of oxygen but the higher you go into the

    atmosphere, the less oxygen there is.

    46I rh>uvHRtgwuh>rh>tD;pH.uF.{gI[D.cd.tuvHRu[k 80 rs;u,RM.rh>eJ;}xd.uF.D;t*Rwz.M.tgwuh>rh>tD;pH.uF.vDRI zJtbl;D;[D.cd.M.tD;pH.uF.td.tgr;b.

    q.erh>vJRxDxD.qluvHRu[kusgM.tD;pH.uF.upSRvDR< pSRvDR0J.vDRI

    Did you know that the Earths atmosphere reaches out into space

    about 500 km?

    [D.cd.tuvHRu[kov.vDRto;vXrlysDusgtd. 500 uHvdrHxX.M.eoh.ng{gI

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    47. How big was the largest diamond?

    Did you know that the worlds biggest diamond was found in South

    Africa in 1905. It weighted more than half a Kilogram or 3,106 carats.Named the The Cullinan, it was cut into 106 polished diamonds.

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    Did you know that diamonds are the hardest mineral in the world?

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    4848484848

    48. Why is space black and the sky blue?

    About 20 miles above the Earth, the sky appears black. So what

    happens between there and here? Light, you might know, travels in

    waves. And the waves of different colors of light are different lengths.

    Sunlight is a mixture of all those different colors. When the sunlight

    travels through the thickest part of the atmosphere, the short

    wavelengths of blue light get scattered. So what we see when we look

    at the sky during the daytime is the scattered blue light.

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    Did you know that the sea looks blue

    because it reflects the color of the sky?

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    4949494949

    49. What percentage of the worlds water is in the oceans?

    About 97 percent. Oceans make up about two-thirds of Earths surface,

    which means that when the next asteroid hits the planet, odds are goodit will splash down.

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    Did you know that more than 3 million cubic km of fresh water is

    stored in the planet?

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    5050505050

    50. Will Earth always be here?

    Astronomers know that over the next few billion years, the sun will

    swell so large as to envelop Earth. If were still here, well probably fry

    and the planet will be vaporized. Theres a chance, however, that the

    changing mass of the sun will cause Earth to move into a more distant

    and pleasant orbit. One mathematical calculation shows it would be

    theoretically possible for humans to engineer such a move before its

    too late.

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