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| celestial body that can be as small as a speck to an object weighing thousands of kilograms |
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| depressions (holes) in the moons surface caused by impacts to moon |
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| tiny objects no larger then grains of sand |
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dark areas on moon
represent great basins and level plains |
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| trenchlike valleys running thru maria bedrock |
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| bright streaks that radiate from a number of craters evidence suggest they consist of shattered rock and dust |
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| means loose rock materials called this because lunar soil is not really soil. contains no water or organic material |
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| daily changes in the moon's appearance as veiwed from earth |
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| from earth face of the moon changes from all dark to all light (new moon to full moon) in 2 weeks during this time said to be waxing |
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| next 2 weeks face of moon gradually cahnges from all light back to all dard (full moon back to new moon) |
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| almost all of the bright half of moon faces earth. when full entire bright half faces earth each phase occurs two times a month |
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Term
Lunar Eclipses
Umbra
penumbra |
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Definition
Shadow cast by any opaque object has 2 parts (umbra and penumbra)
area of total shadow
area of partial shadow
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Term
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Definition
| When the Earth's shadow prevents sunlight from reaching the moon. |
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