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Grade 5 C-3 Sci. Def
Chapter 3 Weather and Climate
Term | Definition |
---|---|
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 |
micro climate | The climate of a very small area |
El NiƱo | A short-term climate change that occurs every two to ten years |
greenhouse effect | Process by which the Earth's atmosphere absorbs heat |
global warming | The hypothesized rise in Earth's average temperature from excess carbon dioxide |