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26 Cards in this Set
- Front
- Back
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What is a Lunar eclipse?
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Earths shadow covering moon
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What causes the seasons?
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the tilt of the earth
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What does the earth do with its axis?
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it rotates
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What is a revolution?
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the earths orbit around the sun
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How do we get day and night?
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earths rotation which is eastward
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how do we get a year?
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earths revolution
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how many degrees is the tilt?
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23.5 degrees
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What is leap year and why do we have them?
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every 4 years we add a day is a leap year. this is because the earth takes 365 days and little more
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how do we get spring or fall?
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when tilt is not at sun or away its in the middle
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why does the sun rise in the east and set in the west?
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rotation because earth rotates eastward
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how long is the lunar phase cycle?
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29.5 days
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Which means getting darker: waning or waxing?
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waning
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Which one means getting lighter?: waning or waxing?
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waxing
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Why does lunar phase cycle take 29.5 days when a moons revolution is 27.3 days?
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This is because the earth is revolving too. So the moon takes an extra 2 days to catch up with the earth
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sun-----moon------earth
what is this? |
solar eclipse
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How much of the is always lit by the sun?
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half is always lit
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how much of the moom is always lit?
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half
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sun----earth----moon
what is this? |
lunar eclipse
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what causes the phases of the moon?
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by angle at which we view the moon
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does the moon rotate?
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yes
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does moon revolve?
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yes
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if the moon does revolve around the earth then why do we not have eclipses twice a month?
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there not in direct linement. moon is at a 5 degrees difference
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what does a moon day equal?
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27.3 days
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what does a year equal on moon?
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27.3 days
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if the usa sees a full moon, what will china see?
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full moon its the same
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Do u always see the same side of moon?
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yes
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