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Atmosphere
Unit 7
Term | Definition |
---|---|
Troposphere | Layer of the atmosphere containing clouds and weather; this is the layer in which we live |
Stratosphere | Layer of the atmosphere containing the ozone layer |
Mesosphere | Layer of the atmosphere that is the coldest |
Thermosphere | The highest layer of the atmosphere (high temperature, but no heat) |
Radiation | Energy received from the sun as electromagnetic waves |
Conduction | Transfer of heat through a material (by touch) |
Convection | Transfer of heat by circulation |
Greenhouse Effect | The process by which gases in the atmosphere, such as water vapor and carbon dioxide, absorb thermal energy and radiate it back to Earth |
Global Warming | A gradual increase in average global temperature (also known as climate change) |
Wind | Movement of air caused be differences in air pressure |
Global Wind | Prevailing wind patterns that blow in a fairly constant, steady direction across the Earth (i.e. westerlies, trade winds, easterlies) |
Local Wind | Winds that generally move short distances and can blow from any direction |
Land breeze | At night, the land cools faster than water, so the wind blows toward the ocean |
Sea breeze | During the day, the land heats up faster than the water, so the air above the land becomes warmer than the air above the ocean. The warm land air rises, and the cold ocean air flows in to replace it. |
Mountain and valley breezes | Like land and sea breezes, these local winds are created by differences in temperature and elevation |