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Cards In This Set
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List the planets in order
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The Sun
 Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune |
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The 2 main asteroid belts, and where are they located?
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The main asteroid belt is between mars and jupiter.The kuiper is between neptune and beyond pluto.
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Where do comets come from?
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The oort cloud
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What is a year?
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Time it takes earth to lap around the sun.
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Why do we have a leap year?
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Because a year is 365 days and 6 hrs. Every 4 yrs, these extra hours add up to an extra day.so we have an extra day every 4 yrs, to keep up with the time.
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Stuck on earth, how can you tell that one year has gone by.
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You can tell through the zodiacs
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What is a day?
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24hrs
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What is a sidereal day?
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Time it takes earth to do a 360 degree spin. (23hr 56mins)
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What is a solar day?
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The extra few minutes it takes for earth to be facing the sun every day. This time ranges
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How do we know when a sidereal day is complete?
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A star will return in the same point in the sky
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What is the local meridan in the sky?
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Imaginary arch in the sky that connects North to south through the zenith.zenith runs through the north and south pole
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How do we know a solar day is complete
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Sun crosses the meridan
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What is the earths axis?
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Imaginary skewer which goes through the north and south pole.
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What is the ecliptic plane?
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Imaginary carpet in both the sun and earth. Earth rolls around on the ecliptic plane.
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What do we mean when we say the earths axis is tilted.
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The axis is not 90 degrees to the ecliptic plane, but pushed over a little.
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