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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 |