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Air takes up space (has volume) and has mass. Heating and cooling of air (transfer of energy) results in movement of air (wind)

Air takes up space (has volume) and has mass. Heating and cooling of air (transfer of energy) results in movement of air (wind). The direction and speed of wind and the air temperature can be measured using a variety of instruments, such as windsocks, weather vanes, thermometers or simple anemometers. Weather events that are related to wind (e.g., tornadoes, hurricanes) are included in this content.

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