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Weather
| Term | Definition |
|---|---|
| air mass | a huge body of air similar temperature, humidity, and air pressure |
| air pressure | a force resulting from the weight of air pushing down on an area |
| atmosphere | the blanket of air and gases above Earth, mostly nitrogen |
| anemometer | measures wind speed |
| barometer | measures air pressure |
| cirrus | feathery clouds high in the sky |
| cold front | cold air is moving under warm air |
| condensation | the process by which water vapor form small water droplets |
| convection | warm air rising while cooler air sinks forms a cyclic pattern |
| cumulonimbus | towering clouds with flat tops produce thunderstorms |
| cumulus | clouds that look fluffy cotton balls and indicates fair weather |
| evaporation | liquid heating and turning to a gas(water vapor) |
| fog | a dense cloud of water vapor that forms just above the ground |
| front | a boundary between air masses of different temperature and humidity |
| Greenhouse Effect | a process on Earth in which gases in the atmosphere trap thermal energy(heat) |
| humidity | the measure of the amount of moisture in the air |
| hygrometer | an instrument used to measure humidity |
| mesosphere | 3rd layer of atmosphere where most meteors burn up |
| meteorologist | a scientist who studies weather |
| ozone | oxygen forming near the surface when exhaust pollutants react with sunlight; three atoms of oxygen |
| precipitation | hail, sleet, snow, rain |
| rain gauge | measures precipitation |
| stratosphere | 2nd layer of atmosphere where ozone is found |
| stratus | smooth, gray clouds that cover the sky and block out sunlight; light rain and drizzle |
| temperature | the measure of the amount of heat energy in the atmophere |
| thermometer | measures the temperature of the air |
| thermosphere | outermost and hottest layer of the atmosphere |
| tornado | a swirling funnel shaped form of extreme weather with winds faster than 200 mph |
| troposphere | 1st layer of the atmosphere where weather occurs |
| warm front | the boundary where warm air is moving over cold air |
| weather | the particular temperature and moisture in a location at a specific time |
| conduction | heat transfer by direct contact |
| radiation | heat transfer travels in waves |
Created by:
Susan_Johnson
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