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| energy that flows from an object with a higher temperature to one with a lower temperature. |
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| Energy transferred in rays & waves |
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| Transfer of energy when molecules bump into each other through contact. |
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| Transfer of heat by the flow of a material |
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| Water moves back and forth between Earth’s atmosphere and surface |
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| water going from liquid to vapor/gas |
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| change of the physical state of matter from gaseous phase into liquid phase |
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| the state of the atmosphere at a specific time and place. |
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| a measure of air molecule movement |
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| air moving in a specific direction |
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| Air moves from ________to ________pressure areas, causing wind |
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| Wind speed measured by an |
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| the amount of water vapor in the air |
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| the amount of water vapor in the air compared to what it can hold at a specific temperature. |
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| Measured with a _____________- |
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| the temperature at which air is saturated and condensation forms |
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| form as a warm air is forced upward and cools. Then the water vapor condenses in tiny droplets around dust particles that are suspended in the air. |
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| very little, if any light gets thr |
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| smooth, even sheets or layers at low altitudes |
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| puffy, white clouds, often with flat bases |
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| high, thin, white, feathery clouds made of ice crystals |
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| clouds are dark and full of water |
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| water falling from clouds |
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| precipitation is Measured with a |
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| Water drops that fall when the temperature is above freezing fall as |
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| Water drops that fall when the temperature is below freezing fall as |
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| forms when water drops freeze in layers around a small nuclei of ice |
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| d) When snow passes through warm air, melts, and refreezes near the ground, it becomes |
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| a huge body of air that has similar temperature, humidity, and air pressure throughout it. |
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| warm, form in the tropics and have low air pressure |
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| cold, form north of 50° north latitude and south of 50° south latitude |
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| air masses form over oceans, very humid |
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| air masses form over land, in the middle of continents, and are dry |
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| North American air masses are mainly controlled by |
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| A) A boundary between two air masses of different density, moisture, or temperature |
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| L = “low”, low pressure area; causes storms and precipitation |
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| H= ‘”high”, high pressure area; Causes dry, clear weather |
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| Movement of air causes static electricity; When positive & negative meet |
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| Lightning superheats the air; Expands rapidly & contracts forming sound waves |
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| A violent, whirling wind that moves in a narrow path over land |
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| estimate tornado strength based on damage surveys |
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| A large, swirling, low pressure system that forms over tropical oceans |
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| A winter storm with strong winds, cold temperatures, and low visibility |
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| means condition are favorable |
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| means that conditions already exist |
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