Word, Definition, and Sentence
The spinning of Earth on its axis is called rotation. Earth’s rotation takes ~ 24 hours.
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Velocity indicates an object’s speed and direction. Earth’s rotation is ~1,000 mph
so its velocity is 1,000mph counterclockwise (East).
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Period of rotation time it takes an object to complete one rotation
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A tide is the rise and fall of ocean water that occurs every ~ 12.5 hours. Tides are
caused mainly by differences in how much the moon’s gravity pulls on different
parts of the Earth.
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A spring tide occurs when the gravities of the sun and moon combine to produce
higher than normal tides. Spring tides occur when the sun, Earth, and the moon
are nearly in a line.
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A neap tide occurs when the sun and moon are at right angles to Earth. High
tides are lower than normal and there is little difference between high tide and
low tide.
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A solstice is one of two days of the year on which the sun reaches its greatest
distance north or south of the equator.
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The imaginary line that connects the North and South poles is Earth’s Axis. It goes
through the center of Earth.
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Gravity is a force that exists among all material objects in the universe
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