7 Th Grade weather Flashcards
(19 cards)
Weather
The condition the earth is under at a specific time and place
Humidity
The amount of water vapor in the air
Relative humidity
The amount of water vapor in the air compared to the water vapor needed to reach saturation
Dew point
The temp in which more condensation happens than evaporation
Precipitation
Any form of water that falls to the earths surface such as rain, hail, sleet, snow
Air pressure
The force of air molecules pushing on an area
Wind
The change in air pressure
Visibility
The measure of how transparent the earths atmosphere is
Air mass
A large volume of air which temperature and moisture content is nearly the same throughout
Front
The boundary between air masses
Jet streams
Long distance winds
Climate
The weather conditions of an area for a long time
Latitude
Is the angular distance in degrees north and south from the equator
Topography
The surface features of an area
Elevation
How high the land is above the sea level
Surface currents
The currents in the surface of the ocean
Ice age
A long period of cooling of the atmosphere
Greenhouse gasses
The gasses in the air
Global warming
Gradual increase of the temp
