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Earth science- jesse

Flashcards for Miss Divito's 7th end of the year review

air pressure The weight of air pressing down on earth
Altitude height above sea level
Atmosphere Blanket of gases surrounding a planet
Composition The parts that make up a system
Density The # of molecules in the same amount of space.(mass per unit of volume) d=m/v
Ozone Layer a layer of O3 in the atmosphere. In the upper atmosphere, it absorbs ultraviolet rays, thereby preventing them from reaching the surface of the earth.
Ozone a gas made up of three oxygen molecules
Properties features that describe and define an object
Temperature a measure of the warmth or coldness of an object or substance with reference to some standard value
Exosphere the fifth layer of the atmosphere extending into space
Mesosphere called the middle atmosphere, it is the coldest layer of the atmosphere, radio waves are reflected to earth and meteors burn up in this layer, temperature continues to decrease with altitude
Stratosphere where most jets fly, where the ozone layer is found, atmosphere is drier, ozone here absorbs and scatters UV radiation
Thermosphere temperatures can be very hot in this layer,known as upper atmosphere, temperature increase with altitude- it is the hottest layer, aurora lights occur here, may also be called the ionsphere
Troposphere Layer of the atmosphere nearest to earth, where weather occurs and airplanes fly, temperature drops as altitude increases, where people live, known as the lowest layer of atmosphere
Deposition the process of water vapor changing directly into a gas
Dew point the temperature at which water vapor will start to condense out of the air as liquid water
Evaporation the process of a liquid changing into a gas
Fog clouds that form at the surface of the Earth
Ground water water that has infiltrated into the ground
Hydrosphere All of the Earth's water that is cycling within the water cycle
Meteorologist A scientist who studies the atmosphere, weather and climate
Created by: 19jesse.eborn