1 2 3 4 astronomer astronomy corona crescent scientist who

8/14/2019 1 2 3 4 Astronomer Astronomy Corona Crescent Scientist Who

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Glossary

1 Astronomer Scientist who studies object in space

2Astronomy The science that deals with the universe beyondEarth

3 Corona The bright, white light seen round the Sun duringa solar eclipse

4 Crescent The shape of the Moon during its first and lastquarter/ it resembles a segment of a ring withsharp ends

5 Eclipse An occasion when the Earth passes between theMoon and the Sun so that you cannot see all orpart of the Moon for a time

6 Half Moon The first-quarter or third-quarter phase of the

Moon / it is equal to one half of the visible side ofthe Moon when illuminated

7 Lunar Anything having to do with the Moon

8 Eclipse of the Moon The eclipse is seen when the dark part of theEarth falls on the Moon / it is also known as lunar

eclipse


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9 Orbit The path of an object in space going round

another object

10 Phase The shape of the Moon appears to be as seen fromthe Earth

11 Planet Large round objects in the solar system thatrevolve round the Sun and receives light from it

12 Revolution The movement of one object round another

13 Rotation The spinning of an object

14 Shadow The dark area formed by an objects which blockslight

15 Telescope The instrument that makes distant objects appearnearer and larger

16 Umbra The area in a dark part from which light iscompletely cut off

17 Penumbra A lighter area between the umbra and the edge ofa dark part

Glossary


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Eclipses

Eclipse ofThe Moon

Eclipse ofThe Sun

The Earth is between the Sun

and the Moon and the threeof them lie in a straight line

The Moon is between the Sun

and the Earth and the threeof them lie in a straight line

The Earth blocks Sunlight

from reaching the moon

The Moon looks reddish,

dark grey or brown.

Sunlight is

Blocked by

The Moon

The Moons

shadow falls

On the earths

surface

Daylight

becomes dark

during the

total eclipse


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EclipsesEclipses

Whats in the middleWhats in the middle

During Solar eclipseDuring Solar eclipse

Moon is in the middleMoon is in the middle

Between Sun and the EarthBetween Sun and the Earth

Where would the Earth beWhere would the Earth be

On lunar eclipseOn lunar eclipse

Earth will be hidingEarth will be hiding

Between Moon and SunBetween Moon and Sun

(Row row your boad)(Row row your boad)


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The eclipse of the Moon occurs when the earth is between the

Sun and the Moon and the three of them lie in a straight line.

When the earth is between the Sun and the Moon and the three of

them lie in a straight line, sunlight cannot pass through the earthbecause it is an opaque object.

As sunlight travels in straight lines, it cannot bend around the

Sun.

Therefore, the Earth blocks the sunlight from reaching the Moon.

The Earths shadow will cover the Moons surface and causes a

lunar eclipse

An eclipse of the Moon can only occur at the phase of full Moon.

When the Earth blocks sunlight , it produces a shadow with tworegions, the umbra and the penumbra.

The eclipse of the Moon can last for more than an hour.


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Phases of the MoonPhases of the Moon

The appearance or shape of the Moon gradually

changes through the course of a month. This

cycle - the cycle of lunar phases, may be

explained if we state the following:

1. The Moon is spherical in shape.

2. The Moon is not self-luminous, but rather

reflects the light of the distant Sun.

3. The Moon circles the Earth once per month.


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Moon's shadow on Earth taken by

French cosmonaut Jean-PierreHaigner aboard the Mir


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The eclipse of the Sun occurs when the Moon is between the Sun

and the Earth and the three of them lie in a straight line.

An eclipse of the Sun can occur at the phase of the New Moon

when the Moon passes between the Earth and the Sun.

When the Moon is between the Sun and the Earth and the three of

them lie in straight line , the Moon blocks the sunlight.

When the Moon blocks sunlight , it produces a shadow with two

regions, the umbra and the penumbra. The total eclipse of the Sun is very brief. It last for only a few

minutes.

During the eclipse of the Sun, the sky gets darker and darker until

eventually it becomes completely dark during the day. It is dangerous to look at a solar eclipse directly. Our eyes can be

seriously damaged if we look directly at it.


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Solar Eclipse Geometry 1Solar Eclipse Geometry 1

Full

Moon

To Sun

To Sun

Earth

Moon

Earth and Moon: Full Moon

The Moon orbits Earth

once every 29.5 days with respect to the Sun


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To Sun

To Sun

Earth

New

Moon

Earth and Moon: New Moon

Moon




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To Sun

To Sun

Earth

New

Moon

Earth and Moon: Solar Eclipse Geometry

Penumbra

Umbra

Moon

An eclipse of the Sun

is only possible during the New Moon phase.


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To Sun

To Sun

Earth

New

Moon

Earth and Moon: Solar Eclipse Path

Penumbra

Umbra

Path of Totality

Moon

During a total solar eclipse

the Moons two shadows sweep across Earth.


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Full

Moon

To Sun

To Sun

Earth

Moon

New

Moon

Earth and Moon: Solar Eclipse Geometry

Penumbra

Umbra

Path of Totality

Moon




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Image of a total solar eclipse. The corona is visible here.

The lines in the corona coming out radially from the sun .


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Total solar eclipse just prior to totality.

Reddish prominences can be seen off the suns limb.


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Solar eclipse animation.

These real images of an eclipse show what happens as

the moon blocks out the solar disk or photosphere.

The corona glows brightly. It is difficult to see the corona

if even a little bit of the photosphere is visible. Some structure

can be seen in the corona, again due to the suns magnetic field.


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GOES images of the Earth showing the path

of the moons shadow during the

August 11, 1999 total solar eclipse.


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A closer look at the 1999 eclipse.


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Total Solar Eclipse from Antarctica

Its possible to see a total eclipse from anywhere on

Earth. This image was shot in Antarctica in 2003.


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A i M i


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Solar eclipse have been generally explained in one of four ways: A celestial being, usually a monster, attempts to destroy the Sun

The Sun fights with its lover the Moon The Sun and the Moon make love and discreetly hide themselves in

darkness The Sun grows angry, sad, sick, or neglectful

Littmann and Willcox, Totality

Norse mythology: the wolflike giant Skllfollows the Sun hoping to devour it.

Ancient Egypt: the evil god Set was

thought to have leapt into the eye of the

Sun god, Horus.

Ancient China: A heavenly dog ate the

Sun.

Chippewa Indians shot flaming arrows at

the Sun hoping to rekindle the flames.

Ancient Meaning


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Chinese astrologers

wrote of an eclipse

occurring over 4000

years ago.

Historians and

astronomers believe

that this was an eclipse

that happened on 22October 2134 B.C.

Two astrologers at the

time, Hsi and Ho, had

apparently failed to

predict this eclipse,

and so were beheaded.


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EclipsesEclipses

Whats in the middleWhats in the middle

During Solar eclipseDuring Solar eclipse

Moon is in the middleMoon is in the middle

Between Sun and the EarthBetween Sun and the Earth

Where would the Earth beWhere would the Earth be

On lunar eclipseOn lunar eclipseEarth will be hidingEarth will be hiding

Between Moon and SunBetween Moon and Sun

(Row row your boad)(Row row your boad)


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TEST YOURSELF

What is the position of the Earth

during the eclipse of the Moon ?

What is the colour of the Moonduring the total eclipse of the Moon ?

How long does the total eclipse of

the Sun last ?

What is the lunar phase during

which a solar eclipse can occur ?


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1 2 3 4 astronomer astronomy corona crescent scientist who

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