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10 Cards in this Set
- Front
- Back
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inertia
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an object will keep movibg unless something stops it
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infrared
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parts of invisible spectrumthat is contiguous to the red end of the visible spectrum
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irregualr galaxy
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galaxy that does not have a distinct shape
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law of universal gravity
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any bodies in univers attract each other with a force that is directly proportional to the product of their mass
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light year
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a long distance or great amount
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mass
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amount of matter is in an object
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microwave
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use in radar, communications,heating microwave oven in various industrial processes
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radio wave
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used for long distance communications
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speed of light
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the distance light can travel in a unit if time through a given substance
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