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| place where Earth meets the sky |
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| the point in the sky directly above the observer |
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| the bright starn in the sky near the North Pole |
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| a wide, object that is spherical, but not completely round |
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-east-west lines parrallel to the equator used to measure distance in degrees
-north and south, from 0 degrees at the equator to 90 degrees north and south at the poles |
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| north-south lines running between the poles, used to measure distance in degrees east and west of the prime meridian, from 0 degrees at the prime meridian to 180 degrees east and west |
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| to spin around on its own axis |
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| how long it takes for an object to rotate fully |
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| a heavy free-swinging pendulum suspended by a long, thin wire, whos plane of motion appears to change as Earth rotates |
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| the effect of Earth's rotaion that causes the deflection of moving objects toward the right in the northern hemisphere and toward the left in the southern hemisphere |
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| to change course because of hitting something |
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| to move around the focus point or another object |
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| the amount of time it takes for one body to move(revolve) fully around another object or body |
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| when the Earth is in the middle of the system |
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| when the sun is in the middle of the system |
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| how long it takes to rotate |
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| how long it takes to revolve |
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| when the data or object increase and decreases in a pattern |
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| the solar radiation(energy from the sun) reaches Earth |
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