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LD ES - Ch 7

LD Earth Science - Chapter 7 - Properties of the Atmosphere

TermDefinition
Air Pressure Effect of the weight of the atmosphere pressing on a given surface area
Anemometer A device that measures wind speed
Atmospheric pressure A measure of the force exerted by the atmosphere
Barometer Instrument used to measure air pressure
Cloud Large mass if water droplets or ice crystals suspended in the air
Condensation Process by which a gas changes into a liquid; a way in which clouds form
Condensation Nuclei Particles suspended in air on which condensation occurs; forming a cloud
Coriolis effect Apparent curvature of the winds, ocean currents, or objects moving long distances along Earth's surface; caused by Earth's rotation on its axis
Dew Point Temperature at which the air would be saturated with moisture
Humidity Measure of the moisture, or water vapor content, of the air
Jet Stream Currents, or very fast winds, that flow in the upper atmosphere
Land Breeze Breeze that blows at night from the land to the sea
Meteorologist Scientist who studies the weather
Millibars Metric unit of atmospheric pressure
Precipitation Water, in the form of rain, snow, or sleet, falling from the sky; sedimentary process that involves substances settling out of a saturated solution
Pressure gradient Rate of change in air pressure between two points on a map
Prevailing winds Wind that blows more often from one direction than from any other
Relative Humidity Amount of water vapor in the air compared to amount it can hold
Saturated Weather condition in which the air holds as much water vapor as it can at a given temperature
Sea Breeze Cool breeze that blows off the water during the day
Sling Psychrometer Used to measure the relative humidity and the dew point temperature
Specific Heat Amount of heat energy required to raise the temperature of 1 gram of a substance to 1 Celsius degree
Temperature Measure of the average vibrational kinetic energy in a substance
Water Vapor Water in the form of a gas
Weather Short-term condition of the atmosphere, including the changes that occur within hours or days
Wind Natural movement of air along, or parallel to, Earth's surface; convection within the atmosphere
Created by: desilva13
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