earth moon 1
TRANSCRIPT
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Sun, Earth, and MoonPresented by
Dr. Marjorie Anne Wallace
Elementary Science Resource Teacher
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I bet you know the answers!
• What causes day & night?
• Which one is bigger the earth or the moon?
• Where does the moon get its light from?
• What percent of the earth is always lit by the sun?
• How many stars are in our solar system?
• How many days does it take for the Earth to revolve around the sun?
• How many low and high tides on Earth every 24 hours?
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The Earth: • -is the third planet from the Sun,• -is an oblated sphere,• -rotates on its imaginary axis counterclockwise every 24 hours or 1 day,• -appears blue in space because it is 70% water, -revolves around the sun every 365 days or 1 year.
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We breathe:
0
20
40
60
80
nitrogenoxygentrace
nitrogen 78
oxygen 21
trace 1
percen
• 78% nitrogen
• 21% oxygen
• 1% argon, neon, carbon dioxide, neon, & krypton
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Which one is the smallest?Which one is the largest?
• Can you put these in size order?
• Place the following in order from largest to smallest.
• Moon• Sun• Earth
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Answer: Sun, Earth, then moon
• The sun is the largest
• Next in size is the Earth.
• The moon is smaller than the Earth.
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2000 SOL #4.7
• Which of these is the biggest?
• F The moon
• G The Earth
• H The sun
• J Jupiter
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Answer: H The sun is the largest!
Our sun is the only star in our solar system. The sun is also the largest heavenly body in our solar system.
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Earth Patterns,Cycles, and Change - SOL 3.7, 4.7
• The sun heats the Earth unevenly, making the poles cold and the tropics hot, because-
• A the tropics face more directly
toward the sun
• B the poles are covered with ice
which causes cold air
• C seasons change
• D weather changes
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2001 SOL 3.7 & 4.7
• The moon revolves around -
• F itself
• G the Earth
• H the sun
• J the solar system
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• The moon revolves or orbits the Earth once every 29 days.
• We all ways see the same side of the moon because the moon rotates and revolves at about the same speed.
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Earth Science Question: rotation
• What is rotation? (define)
• The rotation of the Earth on its axis causes-• A days
• B months
• C seasons
• D years
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Rotation causes day & night.
• Rotation is the turning or spinning of the Earth in one place on its imaginary axis.
• Rotation of the earth on its axis causes day & night. (answer A).
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Earth Science Question:
• Which of these shows the location of a polar ice cap?
• Which of these shows the location of the equator?
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Polar ice caps= A
Equator= C
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Which of these is caused by the turning of the Earth?
• F Summer and winter
• G Stars
• H Day and night
• J Moon phases
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The turning of the Earth causes
•Day & Night
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When the moon is seen from the Earth as a whole circle, it is
called a-
• A Crescent moon
• B Full moon
• C Half moon
• D New moon
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When the moon is seen from the Earth as a whole circle, it is
called aFULL MOON.
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Which of these is the next phase of the moon?
• New Moon --- Waxing Crescent --- ?
• F Full Moon
• G Waning Crescent
• H First Quarter
• J Waxing Gibbous
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The next major phase of the moon would be…
• First quarter.
• Just think about it…the• New moon (can only get bigger.
Or = Waxing)..• Then comes Waxing crescent …
next is• First quarter…then • Waxing Gibbous and then a • Full Moon.
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The revolution of the Earth around the Sun takes-
• A a day & night or 12 hours
• B a week or 7 days
• C a month or 29-31 days
• D a year or 365 days
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The revolution of the Earth around the sun
• Takes 365 days
• or one year.
• NOTE:
• Due to the tilt of the Earth’s axis during revolution, the Earth experiences seasons.