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Weather Factor

AMS Science, Chapter 2 Vocab, Sections 1-5

TermDefinition
Electromagnetic Waves A form of energy that can travel through space.
Radiation The direct transfer of energy by electromagnetic waves.
Infrared Radiation A form of energy with wavelengths that are longer than visible light.
Ultraviolet Radiation A form of energy with wave lengths that are shorter than visible light.
Scattering Reflection of energy in all directions.
Greenhouse Effect The process by which heat is trapped in the atmosphere by water vapor, carbon dioxide. methane, and other gases that form a "blanket" around Earth.
Thermal Energy The energy of motion in the molecules of a substance.
Thermometer An instrument used to measure temperature, consisting of a thin, glass tube with a bulb on one end that contains a liquid.
Conduction The direct transfer of heat from one substance to another substance that it is touching.
Temperature The average amount of energy of motion in molecules of a substance.
Heat The energy transferred from a hottwer object to a cooler one.
Convection The transfer of heat by the movement of a fluid.
Wind The horizontal movement of air from an area of high pressure to an area of low pressure.
Monsoons Sea and land breeze over a large region that change direction with the seasons.
Anemometer An instrument used to measure wind speed.
Global Winds Winds tha blow steadily from specific directions over long distances.
Wind-Chill Factor Increased cooling caused by the wind.
Local Winds Winds that blow over short distances.
Latitude The distance measured from the equator, measured in degrees.
Sea Breeze The flow of air from an ocean or lake to the land.
Jet Stereams Bands of high-speed winds about 10 kilometers above Earth's surface.
Land Breeze The flow of air from land to a body of water.
Evaporation The process by which water molecules in liquid water escape into the air as water wapor.
Psychrometer An instrument used to measure relative humidity, consisting of a wet-bulb thermometer.
Cumulus Clouds that form less than two kilometers above the ground and look like fluffy, rounded piles of cotten.
Humidity A measure of the amount of water vapor in the air.
Condensation The process by which molecules of water vapor in the air become liquid water.
Stratus Clouds that form in flat layers.
Relative Humidity The percentage of water vapor in the air compared to the maximum amount the air could hold at that temperature.
Dew Point The temperature at which condensation begins.
Cirrus Wispy, feathery clouds made mostly of ice crystals that form at high levels, above about 6 kilometers.
Precipitation Any form of water that falls from clouds and reaches Earth's surface.
Rain Gauge An instrument used to measure the amount of precipitation, consisting of an open-ended can topped by a collecting funnel and having a collecting tube and measuring scale inside.
Droughts Long periods of low precipitaion.
Created by: alison.heins
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