the basic cause of all weather is the ________, sun, moon, Scientist who study the weather are called meteorologist, true, false, the imaginary line running through the earth from north pole to south pole is the __________, equator, axis, The air that we live in recieves most of its warmth from the ______, Ground, Sun, Different seasons are caused by the tilt of the earth axis, false, true, winds are produced by temperature differences on the earth., true, temperature, false, other reasons, warm air is heavier than cool air, heavier, true, lighter, the earth´s surface spins at over (1,000.000) miles per hour ., true, 1000, winds of the north and south pole, polar easterlies, equator easterlies, winds above the Tropic of Cancer and below the Tropic of Capricorn, prevailing westerlies, winds of the tropics, winds located between the tropics and the equator line, equator winds, trade winds, the amount of water vapor that the air can hold at a given temperature is the ______________ ot the air, wet, relative humidity, The lowest possible temperature at which air is able to hold all of its water vapor is its _______________, steam point, dew point, the process in which water vapor leaves the air and changes into liquid water is called ____________, precipitation, condensation, Air is saturated when the humidity of the air is ________ percent ., 100, 1,000.000, Water vapor that condenses to form liquid water on the ground is called _______, rain, dew, water vapor that condenses and forms frozen water on the ground is called __________, frost, cold dew, An ice crystal in a cloud becomes too heavy , falls , melts, and lands on the earth as liquid water., wet snow, rain, falling ice crystals melt slightly , stick , and freeze together into snowflakes., freezing rain, wet snow, falling ice crystals melt into raindrops then refreeze and land on earth as tiny pieces of ice., sleet, hail, falling ice crystals melt, hit the earth as liquid rain , but refreeze as soon as they land, freezing rain, rain, a small pice of ice is tossed up and down inside a cloud , forming several layers of ice, until it is tooo heavy and falls to earth, hail, dry snow, puffy, bulgy clouds belong to the __________ family, cumulus, nimbus, Layers of flat clouds belong to the ________ family., cirrus, stratus, Wispy, curly clouds very high in the atmosphere belong to the ________ family ., cirrus, stratus, sheets of clouds that often produce rain are ________ clouds ., cumulus, stratus, clouds made of very small ice crystals are ___________ clouds, cirrus, nimbus, ¨Thunderhead¨is another name for a ___________ cloud, cumulonimbus, nimbostratus, A term used to describe a cloud form which rain is falling is _____, nimbus, stratus, the broad, flat top pf a cumulonombus cloud is called an anvil top, true, false, When opposite electrical charges build up in very tall clouds _____________ is produced, tornado, lightning, the rapid expansion of superhead air causes shock waves that we hear as thunder, true, false, the type of storm that packs the most destructive power into the smallest space is the hurricane, hurricane, tornado, the calm region of very low air pressure in the center of a tornado is called the eye, true, false, if a tornado has been spotted , meteorologist issue a tornado _________, warning, watch, the thin channel of charged air through which a lightning bolt can travel is the ___________, step leader, anvil top, lightning bolts that do not come in contac with the ground but remain withn the cloud are known as _______ lightning, sheet, hightlining, the row of thunderheads that builds up in the front of advancing cold air is called a squall line, true, false, the boundary betweeen two air masses is called a front, true, false

science test 8

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