Term
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Definition
| a force field that surrounds a magnet |
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Term
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Definition
| due to the sun & moon partly canceling each other’s gravitation effect |
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Term
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Definition
| absence of a support force |
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Term
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Definition
| moon is between the sun and Earth |
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Term
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Definition
| Earth is between Sun and moon |
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Term
True or False:
A black hole has more gravitational field than the star from which it came. |
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Definition
| False, the masses are the same) |
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Term
Equation for:
Any object’s gravitational field |
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Definition
g = F/m
g = G m1 m2/r2/m1
g = G m/r2) |
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Term
| If you stepped into a hole bored completely through Earth, what kind of motion would you experience? |
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Definition
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Term
| At the center of the earth what is the net force or you? |
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Definition
| Zero, all of the mass is pulling you outward in different directions |
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Term
| If you know the mass and radius of any planet, what can you calculate? |
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Definition
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Term
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Definition
| mass of the object and radius of the object |
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Term
| If you are in an elevator that is falling freely, the scale reads zero, are you weightless? |
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Definition
| Yes, according to the scale, because you are not supported, No, because you are accelerating toward the center of the Earth |
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Term
| Why are there two tides a day? |
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Definition
| ocean nearest the moon is pulled toward the moon, and the main body of Earth is pulled toward the moon, away from the ocean on the far side |
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