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| The study of the universe |
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| A celestial body that can range in size from a speck to an object weighing thousands of kilograms |
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| Depressions in the moon's surface |
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| Tiny objects no larger than sand grains |
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| Trench like valleys running through maria bedrock |
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| Radiate from a number of craters |
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| The daily charges in the moon's appearance as viewed from earth |
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| the face of the moon changes from dark to light, or from new moon to full moon |
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| The force of the moon gradually changes from all light to back to all dark, or from full moon back to new moon |
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| the area of a total shadow |
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| The area of a partial shadow |
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| an event during which earth's shadow prevents the sunlight from reaching the moon |
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| When the moon comes between the sun and earth, moons shadow hits the earths surface |
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How big is our moon compared to the size of the earth?
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What other planet has a relatively large single moon?
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| two moons, phobos and deimos |
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How many moons does mars have? What are there names?
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What planet is considered to be Earth's twin?
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What is the material called that dates back to the formation of the moon?
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For every 1 meteorite impact on the moon, how many were on Earth?
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| orpheus, hit the earth twice |
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What was the name of the object thought to have struck the earth? how many times did it hit earth?
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How much larger did the moon appear when it was first formed?
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How long was a day on the earth back then?
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| the moon moves from a distance of 3 cm every year, the tides cause this. |
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How far is the moon moving away from the moon each year? What causes this?
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| the tilt of earths axis is 23.5 degrees in relative to the planets orbital plane |
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What is the tilt of the Earth's axis?
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The tilt is what contributes to the seasonal variations we see
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| what changes do the tilt cause? |
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What other planet has a tilt of its axis similar to earths?
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What element was found on the moon to make scientists think there was water on the moon?
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Why cant saturns rings coalesce to forma moon?
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What is causing the earth's rotation?
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| stabelizes the earths tilt |
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How does the moons gravity keep the earths climate regulated?
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What is the average length of time between mass extinctions on earth?
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| continue to recede and start to wobble |
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What is likely to the earth-moon system in 1 billion years?
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