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science chapter 2

weather factors

electromagnetic waves a form of energy that can travel through space
radiation the direct transfer of energy by electronic waves
infrared radiation a form of energy with wavelengths that are longer than red light. not visible but can be felt by heat.
ultraviolet radiation its given off from the sun and has wavelengths shorter than violet light. (sunburns)
scattering reflection of light in all directions
greenhouse affect the process by which gases hold heat in the air
thermal energy the total energy of motion of the molecules of a substance
temperature the average amount of energy of motion of each molecule of a substance
thermometer a thin glass tube with a bulb on one end that contains a liquid (mercury or colored alcohol)
heat the energy transferred from a hotter object to a colder one
convection the transfer of heat by the movement of a fluid
conduction the direct transfer of heat from one substance to another that one is touching
wind the horizontal movement of air from an area of high pressure to areas of low pressure
anemometer a tool with 3 or 4 cups mounted on the ends of spokes that is used to measure wind speed
wind-chill factor the increased cooling that a wind can cause
local winds winds that blow over short distances caused from unequal heating of the earths surface within a small area.
sea breeze a wind that blows from an ocean or lake
land breeze the flow of air from land to a body of water
monsoon sea and land breezes over a large region that change directions with the seasons
global winds winds that blow steadily from specific directions over long distances
coriolis effect the way earths rotation makes winds curve
latitude the distance from the equator measured in degrees
jet streams high speed winds aout 10 km above earths surface
psychrometer a tool that has 2 thermometers
dew point the temperature at which condensation begins
cumulus clouds that look like fluffy, rounded piles of cotton
stratus clouds that form in flat layers
cirrus wispy feathery clouds (ice crystaly)
precipitation any form of water that falls from clouds and reaches earths surface (rain,hail,snow,sleet)
droughts long periods of unusually low precipitation that can cause great hardship
Created by: msarsfield