the moon
DESCRIPTION
The Moon. A look at our nearest neighbor in Space!. Free powerpoints at http://www.worldofteaching.com. What is the Moon?. A natural satellite (something that orbits a planet) One of more than 96 moons in our Solar System For example, Jupiter has 63 moons! - PowerPoint PPT PresentationTRANSCRIPT
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A look at our nearest neighbor in Space!
The Moon
Free powerpoints at http://www.worldofteaching.com
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What is the Moon?• A natural satellite
(something that orbits a planet)
• One of more than 96 moons in our Solar System–For example, Jupiter has
63 moons!• Planet Earth only has one
moon, so we call it THE Moon.
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The Moon’s Surface
• No atmosphere• No liquid water• Extreme
temperatures– Daytime = 130C
(265°F)– Nighttime = -190C
(-310 F)• 1/6 Earth’s gravity
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The moon revolves around the Earth.The Earth revolves around the Sun.
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How Can We See the Moon?• Sunlight shines on the
moon!–Just like Earth, the moon
has a “day” and “night”–The sun shines on only half
of the moon at one time.
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It’s Just a Phase• Moonlight is
reflected sunlight• Half the moon’s
surface is always reflecting light
• From Earth we see different amounts of the Moon’s lit surface
• The amount seen is called a “phase”
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It takes 29 days (about 1 month) tocomplete the phases of the moon one time.
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earth
moon orbit`searth
last (third)quarter
gibbous moon
full moon
gibbous moon
first quarter
crescent
new moon
crescent
waning Moon
waxing Moon
SUN
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Waxing and Waning• As the moon revolves around the
sun, we see different amounts of the “lit up side”
• When we see MORE of the lit side, it’s WAXING
• When we see LESS of the lit side, it’s WANING
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Right Light, Waxing• WAXING: When we start to see
MORE of the lit side of the moon• The moon starts to look “bigger”
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Left Lit, Waning• WANING: When we start to see
LESS of the lit side of the moonWhen the moon starts to look“smaller”
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Why does the moon have phases?
• The revolution of the Moon around the Earth causes the Moon to appear to have phases.
NSF North Mississippi GK-8
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8 Phases of the Moon• New Moon
• Waxing Crescent
• First Quarter
• Waxing Gibbous
• Full Moon
• Waning Gibbous
• Third Quarter
• Waning Crescent
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New Moon• The moon is not
visible from Earth. The moon is between the Sun and the Earth.
• The dark side is facing us.
• This phase lasts one night.
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Waxing Crescent• Waxing means that the
bright side is increasing. The right side is the bright side.
• Less than one half of the moon is illuminated.
• This phase includes any visible moon from a small sliver to almost half.
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First Quarter • The entire right side of the moon is illuminated.
• The moon looks like a half circle.
• The illuminated side is increasing.
• This phase only lasts one night.
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Waxing Gibbous• Gibbous means that
more than one half is visible, but it is not quite full.
• This phase includes the night after the first quarter to the night before the full moon.
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Full Moon • The moon is full and bright. It looks like a large circle.
• The illuminated side is facing us.
• Only happens once every 29 nights.
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Waning Gibbous • The moon appears more than half but not quite full.
• Waning means that the illuminated side is decreasing.
• The left side is the bright side.
NSF North Mississippi GK-8
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Last Quarter or Third Quarter• Left Half of the
moon is illuminated.
• The illuminated side is decreasing.
• This phase also only lasts for one night.
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Waning Crescent
• Less than one half of the moon is illuminated.
• The moon will continue to become smaller and smaller.
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New Moon• The moon is not
visible from Earth. The moon is between the Sun and the Earth.
• The dark side is facing us.
• This phase lasts one night.
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Waxing Crescent• Waxing means that the
bright side is increasing. The right side is the bright side.
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NSF North Mississippi GK-8
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FULL
QUARTER
CRESCENT
GIBBOUS
FOUR MAIN SHAPES
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Name this phase!
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Name this phase!
Full Moon
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Name this phase!
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Name this phase!
Waning Gibbous
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Name this phase!
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Name this phase!
Waning
Third Quarter
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Name this phase!
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Name this phase!
Waxing
First Quarter
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Name this phase!
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Name this phase!
Waning Crescent
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Name this phase!
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Name this phase!
Full Moon
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Name this phase!
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Name this phase!
New Moon
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Name this phase!
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Name this phase!
Waning Gibbous
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Name this phase!
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Name this phase!
Waning Crescent
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Tonight’s Moon…?
Homework: Tonight, go outside and find the moon.
What phase is it in?
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Far Side of the Moon• First seen by Luna 3
Russian space probe in 1959
• Surface features different from near side– More craters– Very few maria– Thicker crust