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Science

Ch. 6 vocab

QuestionAnswer
weather - the condition of the atmosphere as it is affected by temperature, atmospheric pressure, wind, and water.
air mass - a large body of air with consistent temperature and moisture content throughout
wind - the horizontal movement of air that occurs as a result of pressure differences between two air masses.
thermal - a small, upward flow of warm air.
convection cells - large wind patterns in Earth’s atmosphere caused by convection.
Coriolis effect - the bending of currents of air or water due to Earth’s rotation.
meteorologist - an individual who uses scientific principles to forecast the weather.
dew point - the temperature at which more water condenses than evaporates in an air mass at a constant atmospheric pressure.
cloud - a group of water droplets or ice crystals that you can see in the atmosphere.
front - the border between two different air masses.
cold front - a front that occurs when a cold air mass moves in and replaces a warm air mass.
warm front - a front that occurs when a warm air mass moves in and replaces a cold air mass.
jet streams - high-altitude, fast moving winds.
low-pressure center - a low-pressure area created by rising warm air.
high-pressure center - a high-pressure area created by sinking cold air.
isobar - a line on a weather map that connects places that have the same atmospheric pressure.
storm cell - a convection cell within a cloud that is associated with a storm.
lightning - a bright spark of light that occurs inside a storm cloud, between a cloud and Earth’s surface, or between two clouds.
thunder - a sound that occurs when a lightning spark heats air and the air expands.
cyclone - a low-pressure center surrounded by rotating winds.
hurricane - a tropical cyclone with wind speeds of at least 74 miles per hour (119 kilometers per hour).
tornado - a system of rotating winds around a low-pressure center; a tornado is smaller than a hurricane, but has faster winds.
climate - the long-term record of weather patterns and includes the temperature, precipitation, and wind for a region.
biome - a major climate region with particular plants and animals. Earth has six major biomes.
desert - a climate region that averages less than 35 centimeters of rainfall per year.
grasslands - climate regions with too little rainfall to support a forest. Grasslands have grasses as the main vegetation.
temperate deciduous forests climate regions in the midlatitudes that have four seasons.
tropical rainforests - climate regions found near the equator that have a lot of rainfall and high biodiversity.
taiga - the largest climate region, found in the higher latitudes; also known as a boreal or coniferous forest.
tundra - a climate region located in high latitudes; the coldest land biome.
Created by: gwcs grade 5
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