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22 Cards in this Set
- Front
- Back
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___ is the only planet in the solar system that is suitable for life.
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Earth
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The Earth's atmosphere is mostly made up of ____.
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nitrogen
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Over ___% of the Earth's surfac is water.
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70%
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_____ objects that revolve around another object.
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satellite
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_____ are small holes in the surface
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craters
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_____ are crevices or trenches found on the lunar suface.
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Rilles
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____ are seas that resemble rolling plains.
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maria
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A _____ month is the time it takes the moon to revolve around the earth.
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lunar
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A _____ moon is when the moon is completely hidden from the Earth's view.
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new moon
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_____ means to grow larger.
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waxes
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Waning means to be ____.
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shrinking
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A ______ eclipse is when the new moon moves directly between the sun and the earth.
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solar eclipse
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When the entire moon can be seen, we call this a ___ moon.
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full moon
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A ____ eclipse is when the moon is darkened as it passes through the Earth's shadown.
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lunar eclipse
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The moon's diameter is ___ of the Earth's diameter.
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1/4
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The moon's gravitational pull on the Earth has an effect on the ________.
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ocean tides
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The highest point of the tide is known as the ____ ___.
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high tide
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The lowest point of the tide is known as the __ ___.
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low tide
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___ ____ are higher than normal tides and occur ___ a month.
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High tides
twice a month |
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High tides occur when there is a ____ moon and a ____ moon.
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full moon and new moon
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A ____ tide is a weaker than usual tide and it occurs ___ a month.
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neap
twice a month |
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A neap tide occurs when there is a _____ and a _____ moon.
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first-quarter moon
third-quarter moon |
