Term
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Definition
| the study of moon stars and other objects in space |
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Term
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Definition
| the spinning motion of a planet on its axis |
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Term
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Definition
| the path of an object as it revolves around another object in space |
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Term
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Definition
| the two days of the year on which the sun reaches its greates distnace north or south of the equator |
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Term
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Definition
| an imaginary line that passes through Earth's center and the North and South poles abouth which Earth rotates |
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Term
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Definition
| the movement of an object around another object |
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Term
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Definition
| a system of organizing time that defines the beginning length and dividion of a year |
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Term
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Definition
| the two days of the year on which neither hemisphere is tilted toward or away from the sun |
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Term
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Definition
| a push or a pull exerted on an object |
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Term
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Definition
| the force that pulls objects toward each other |
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Term
| law of universial gravitation |
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Definition
| the scientific law that states that every object in the universe attracts every other object |
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Term
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Definition
| a measure of how much matter is in an object |
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Term
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Definition
| a measure of the force of gravity on an object |
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Term
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Definition
| the tendency of an object to resist any change in its motion |
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Term
| newtons first law of motion |
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Definition
| an object at rest will stay at rest and an object in motion will stay in motion with a constant speed and direction unless acted on by a force |
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Term
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Definition
| one of the different apparent shapes of the moon as seen from Earth |
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Term
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Definition
| the blocking of sunlight to Earth that occurs when the moon is directly between the sun and Earth |
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Term
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Definition
| the part of a shadow surrounding the darkest part |
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Term
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Definition
| the periodic rise and fall of the level of water in the ocean |
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Term
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Definition
| the tide with the least difference between consecutive low and high tides |
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Term
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Definition
| the partial or total blocking of one object in space by another |
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Term
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Definition
| the darkest part of a shadow |
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Term
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Definition
| the blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon |
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Term
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Definition
| the tide with the greatest difference between consecutive low and high tides |
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Term
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Definition
| a device built to observe distant objects by making them appear closer |
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Term
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Definition
| Dark, flat areas on the moon's surface formed from huge ancient lava flows |
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Term
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Definition
| a large round pit caused by the impact of a meteoroid |
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Term
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Definition
| a chunk of rock or dust in space |
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