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Weather

TermDefinition
Nitrogen Gas that makes up 78% of the atmosphere.
Oxygen Gas that makes up 21% of the atmosphere
Carbon Dioxide Gas that makes up less than 1% of the atmosphere, responsible for green house warming of planet and is plant food.
Methane Gas that makes up less than 1% of the atmosphere, comes from agriculture (farm animals) and 28 times more powerful than Carbon Dioxide at warming the planet.
Atmospheric Pressure The weight of the sky on the planet below. Represented by High and Low Pressure systems.
Barometer Instrument that measures air pressure.
Climate Average weather of a region over 30 years.
Exosphere Ultra thin layer of atmosphere with very rare atoms at high temperatures. Satellites orbit here.
Front A boundary separating air masses of several characteristics such as air density, wind, and humidity.
Global Wind System The general wind patterns over the planet
High Pressure Relatively colder and more dense air with a taller atmosphere, leading to clearer skies and drier conditions.
Humidity The amount of moisture in the air.
Low Pressure Relatively warmer and less dense air with a more shallow atmosphere, leading to cloudier skies, wet and stormy conditions.
Mesosphere Coldest layer of the atmosphere, where meteors burn up
Stratosphere Layer where jets fly. Ozone layer found here, protects earth from harmful radiation.
Thermosphere The layer where space begins. Very thin air, where the International Space Station and aurora Borealis are found.
Troposphere The layer of the atmosphere where we live and the vast majority of weather takes place here. 75% of the atmosphere's mass is here.
Condensation Gas turning into liquid
Evaporation Liquid turning into a gas
Meteorologist Scientist that studies weather
Precipitation Rain, snow, sleet, or hail that falls to the ground.
Run Off Water flowing on the ground from one place to another
Transpiration Water vapor leaving plants when they breathe
Water Cycle The flow and recycling of water through the weather system
Water Vapor Water in gas form
Accumulation The sum of rainfall or snowfall an area receives over a certain period of time
Air mass a body of air with horizontally uniform temperature, humidity, and pressure.
Cold Front The boundary of an advancing mass of cold air
Cumulonimbus A cloud forming a towering mass with a flat base at fairly low altitude and often a flat top, as in thunderstorms.
Tornadoes The funnel that comes down from mesocyclonic thunderstorms that can range from weaker EF1 to powerful and deadly EF5 tornadoes.
Warm Front The boundary of an advancing mass of warm air
Hurricane A long lasting tropical cyclonic storm that last for weeks and travel the globe. They strengthen over warm waters.
Cirrus High altitude wispy clouds.
Cumulus Large rounded low altitude clouds that people see "shapes" in.
Doppler Radar Instrument that helps us image precipitation over a map.
Forecast The science of predicting upcoming weather events with the help of measurements and computers.
Occluded Front When a warm air mass is lifted up by 2 colliding cold air masses.
Stationary Front When 2 fronts meet and don't mix or over power one another, causing stagnation "very little movement".
Convection currents Circular flow of fluid, whether that be liquid or gas
Coriolis Effect The effects of the angular momentum of the spinning of the earth on fluids
Gulf Stream A warm water current from the gulf of mexico to Europe
Jet Stream Narrow variable band of very strong predominantly westerly air currents encircling the globe several miles above the earth.
Acid Rain Rainfall that is acidic because of pollution from the burning of fossil fuels. This harms rivers, oceans, lakes, and forests.
Created by: preese
Popular Earth Science sets

 

 



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