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20 Cards in this Set
- Front
- Back
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The srudy of the moon,stars,and other objects in space is called __________ |
astronomy |
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The imaginary line that passes through Earth's center and the North and South poles is Earth's __________ |
Axis |
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The spinning of Earth on its axis is called ___________ |
Rotation |
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_____________ is the movement of one object around another. |
Revolution |
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The sun reaches its greatest distance north or south of the equator twice each year.Each of these days,when the sun is farthest north or south of the equator ,is known as a ____________. |
Solstice |
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Halfway between solctices, neither hemisphere is tilted toward or away from the sun.This occurs twice a year,when the noon sun is directlyoverhead at the equator.Each of these days is known as an_____________ |
equinox |
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_____ is the amount of matter in an object. |
Mass |
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The force of gravity on an object is known as its ________. |
Weight |
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The tendency of an abject to resist a change in motion is ___________ |
Inertia |
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A ______ is a push or pull |
Force |
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Newtons __________________________________states that every object in the universe attract every other object |
Law of universal gravitation |
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Different shapes of the moon you see from Earth are calles _________ |
Phases |
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When an object in space comes between the sun and a third object,it casts a shadow on that object,causing an ________ |
Eclipse |
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a ____________ occurs when a new moon blocks your view of the sun |
Solar eclipse |
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A large part of a shadow is a _________________. |
Penumbra |
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the darkest part of a moon shadow is the ___________. |
Umbra |
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a ____________ occurs at a full moon when Earth is directly |
Lunar eclipse |
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the rise and fall of ocean water that occurs every 12.5 hours or so is a _________ |
Tide |
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a tide with the greatest difference between consecutive low and high tides, called a _______________ |
Spring tide |
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a tide with the least difference between consecutive low and high tide is a ____________________________ |
Neap tide |
