8 Sci Ch 8 Test 8
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| agricultural drought | type of drought that occurs when precipitation cannot supply enough moisture to the ground to support an area's crops
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| air mass | large body of air with relatively uniform properties
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| air-mass weather | phenomenon when an air mass remains stationary over a region for a long time
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| Arctic | air mass that brings very cold and dry weather
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| cirrostratus | Wispy, thin sheets of clouds that are made of ice crystals and found spreading at high elevations.
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| climate | year-round atmospheric conditions typical of a certain place
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| clouds | consist of tiny ice crystals or droplets of water formed when a body of rising air reaches the dew point, usually the result of adiabatic cooling of moist air
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| condensation nucleus | airborne water vapor cannot turn into liquid without a small particle
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| cumulus | mid-level clouds that look like fluffy, rounded piles of cotton
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| decrease | when air temperature rises, this happens to relative humidity
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| dendrites | snowflakes with white, feathery branches forming a leaf-or star-shaped pattern
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| dew | water vapor in the air that touches the cooler ground and turns to a liquid
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| dew point | temperature at which cooling air becomes sasturated
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| drought | A long period of low precipitation
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| evaporation | process of a liquid becoming a gas
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| frontal cyclone | a low that forms along a front
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| frost | Ice formed when water vapor touches the ground and changes directly into ice crystals
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| hailstones | layered balls of ice that fall like rain
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| heat energy, uneven distribution of heat energy, and water vapor | three major factors that determine the earth's weather
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| humidity | amount of water vapor in the air
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| lenticular cloud | almond-shaped cloud
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| maritime polar | type of air mass that brings cool, wet weather
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| maritime tropical | type of air mass that brings warm, moist weather
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| melting | going from a solid to a liquid
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| meteorology | The science dealing with the weather and atmospheric conditions
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| occluded front | type of front that forms a Y shape
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| photochemical smog | thick, brownish haze that results from complex molecules released into the air by vehicles and some factories and plants
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| rain | drops of liquid water that have a diameter of 0.5 mm or greater and fall from the clouds of Earth
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| relative humidity | the ratio comparing at the actual humidity to the humidity of saturated air under the same conditions
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| saturated | air that is completely full of water vapor and can hold no more
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| sleet | Clear ice particles formed when raindrops freeze before they reach the ground
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| smog | mixture of smoke and fog
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| snow | precipitation made of ice crystals that fall to the ground
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| snowflakes | large clumps of falling ice crystals that melt only slightly and stick and refreeze together
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| socioeconomic drought | type of drought based on a water shortage's effect on people
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| stationary | type of front forms when two air masses push against each other but neither advances
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| stratocumulus | most frequent type of cloud
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| stratus | cloud that forms a flat, gray layer of heavy clouds not far above the ground
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| temperature, humidity and pressure | three factors that affect the density of air mass
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| upslope fog | type of fog found along the slopes of mountains
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| warm front | type of front that forms when a warm air mass moves into a region occupied by a cold air mass
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| water cycle | movement of water from the earth's surface, into the air, and back to the surface
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