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weather and climate
Term | Definition |
---|---|
troposphere | the lowest layer of the atmosphere where most water is found and most clouds form |
thermometer | a tool used to measure temperature |
barometer | an instrument that is used to measure air pressure and to predict changes in the weather |
rain gauge | an instrument for measuring the amount of moisture in the air |
hygrometer | an instrument for measuring the amount of moisture in the air |
wind vane | a weather instrument used to determine the direction the wind is blowing |
anemometer | an instrument for measuring the force or speed of the wind |
high-pressure area | a mass of cold air |
low-pressure air | a mass of warm air |
water vapor | gas or moisture floating in the air;steam |
fog | fine particles of water floating in the atmosphere near the ground |
meteorologist | a person who studies , report and forecasts weather conditions |
updrafts | an upward current of warm, moist air |
wind | the horizontal movement of air |
atmosphere | The layer of air that surrounds earth |
air pressure | The weight of air |
humidity | A measure of the amount of water in the air |
precipitation | Any form of water that falls from clouds such as rain or snow |
evaporation | The process by which a liquid changes into a gas |
condensation | The process by which a gas changes back into a liquid |
local winds | The winds dependent upon local changes in temperature |
prevailing winds | The global winds that blow constantly from the same direction |
air mass | A large body of air that has nearly the same temperature and humidity throughout |
front | The boundary between air masses |
climate | The average of all weather conditions through all seasons over a period of time |
microclimate | The climate of a very small area |
El Nino | A short-term climate change that occurs every two to ten years |
green house effect | Progress by which the earth atmosphere absorbs heat |
global warming | The hypothesized rise in earth's average temperature from excess carbon dioxide |