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| when opposite forces on an object are not equal, resulting in a motion |
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| when opposites forces on an object resulting in no motion |
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| speed in a given direction |
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| the study of interaction of matter and energy |
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| machine made up of a wheel and rope, example, flagpole |
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| the turning point of a lever placed at pivots |
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| force that causes an object to move in a circular motion |
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| a measure of the force of the air pressing down on the earth |
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| a straight-sided container with a flat bottom used to measure rainfall |
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| a large body of air with uniform properties throughout |
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| a boundary that is formed with two air masses with different properties, meet |
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| winds between 30 degrees and 60 degrees latitude responsible for many weather movements across the US |
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| layer of Earth's atmosphere where weather takes place |
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| an instrument used to measure the direction of the wind |
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| heating of the earth's atmosphere caused by excessive carbon dioxide from burning of fossil fuels |
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| the force of winds to shift towards the right or left caused by the rotation of the earth |
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| the thick layer of the Earth made up of hot rock located between the crust and the core |
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| height above sea level usually measured in miles or kilometers |
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| a type of map that uses contour lines to show elevation of land |
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| cracks in the earth's crust |
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| an animal that eats both plants and animals |
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| anything that controls the growth or survival of an organism or population |
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| fluffy white clouds resembling balls of cotton that are usually associated with fair weather |
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| feathery clouds made of ice crystals that are usually associated with fair weather |
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| thick layered gray clouds that form blankets in the sky and are usually associated with rain and snow |
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| tall, dense clouds that are usually associated with thunderstorms |
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| a flat surface that is higher on one end, ex. a ramp |
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| resource that cannot be naturally replaced after it has been used such as oil or natural gas |
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| a cold, treeless biome of the far north |
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| a cold forest biome of conifers in the upper northern hemisphere |
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