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5th science
5th science chapter 8
Question | Answer |
---|---|
people who study the weather | meteorologists |
the ___ is the source of all weather | sun |
the __________ is a filter screen for solar rays | atmosphere |
the function of the atmosphere in preventing the earth's heart from escaping to space is called the __________ _____ | greenhouse effect |
the ______at first gets all the heat of the sun and the reflects it of into the air to give the air second-hand heat | ground |
an imaginary line running *through the earth from the North pole to the South pole | the axis |
the _____ is a imaginary line circling the earth midway between the North and South Poles | equator |
the half of the earth's surface north of the equator is called the ________ _________and the other half south of the equator is the _______ __________ | Northern and Southern Hemisphere |
____ ___ ____ when heavier; cooler air gets underneath it and pushes it upward | warm air rises |
air always _____ ____ from a region of high pressure to fill i a region of low pressure | always flow |
equator winds | trade winds |
winds from the poles | polar easterlies |
the winds between the poles and the equator | prevailing westerlies |
where is the most changeable weather on the earth | between the poles and the equator |
______ air can hold much more water vapor than _____ air can | warm; cold |
we refer to the amount of water vapor in air as the ______ of the air | humidity |
if the humidity of air is 100% we say that the air is ________ | saturated |
we refer to the measure of humidity as the ________ ________ | relative humidity |
the temperature at which cooling air becomes saturated is called the ___ _____ | dew point |
released water vapor leaves the air and changes back into liquid water in a process called | condensation |
___forms on the ground as the water vapor in the air condenses | dew |
frozen dew | frost |
the troposphere's topmost boundary | tropopause |
the tropopause marks the location of the __________ ________ | temperature inversion |
the three things that can push air up | solar heating, mountains, and air fronts |
a ___ ____ is a single large unit of air with uniform temperature and humidity characteristics (and it forms over a source region) | air mass |
a ______ ______ is a large area of land or ocean with nearly the same temperature across its entire surface | source region |
hot and dry air masses equatoral | continental tropical |
moist warm equatoral air masses | maritime tropical |
cold moist arctic air masses | maritime polar |
cold and dry arctic air masses | continental polar |
_____ and ________ air masses, which develop over the ice and snow of the poles, have very cold and rather dry air | arctic and antarctic |
a boundary between two air masses is called a _____ | front |
at a ____ _____ warm air pushes back cold air but at a ____ _____ cold air pushes back warm air | warm front and cold front |
heap and pile clouds | ONLY cumulus clouds |
the bigger "brother" of the cumulus cloud | cumulonimbus |
layer clouds | ONLY stratus clouds |
wisp or curl clouds | cirrus clouds |
combined cloud families | combination clouds |
the combination cloud of the stratus and cirrus families | cirrostratus |
the combination cloud of the stratus and cumulus clouds | stratocumulus |
the prefix ____- is often placed in front of a cloud name to describe clouds that are at a medium height instead of being close to the ground like stratus cloud or near the top of the troposphere like cirrus clouds | alto- |
medium-height cumulus clouds | altocumulus |
high, stratus clouds | altostratus |
the prefix _______- is a term used to describe a cloud which rain is falling | nimbo |
the two chief rain clouds | nimbostratus cumulonimbus |
___ is a special type of cloud at ground level | fog |
________ ___ forms on cool clear nights especially during the long nights of autumn | radiation fog |
___ ___ forms when warm air moves over cold water | sea fog |
_____ fog has two names and is low to the ground | steam |
rain, sleet, hail, and snow | a few forms of precipitation |
the ordinary precipitation | rain |
A precipitation in which the ground is below freezing where a gap of warm air forms between the cloud and the ground so the molecules melt then freeze back together | wet snow |
ice crystal clumps that have melted and refroze | snowflakes |
___ ____ falls when the temperature of the air is well below freezing ice crystal falling through very cold air do not melt and stick together but travel separately | dry snow |
fallen rain that has frozen on the ground after it fell | freezing rain |
water vapor condensed on sea salt instead of sand | tropical rain |
a thunderstorm is produced by the ____________ or the ___________ | cumulonimbus or thunderhead |
the flat top of a cumulonimbus clouds | anvil top |
rising air going to a cumulonimbus cloud | an updraft |
falling air, cause: raindrops | downdraft |
a _________ gets caught repeditally by an updraft and each time gets bigger | hailstone |
a spot where positive and negative energy meet | electric current |
the starting molecules of lightning | step leader |
when all we can see of lightning is a bright flash | sheet lightning |
sheet lightning that is very far off in the distance is called ____ _________ | heat lightning |
the middle of a tornado | eye |
meteorologists issue a _______ _____ if weather conditions could produce a tornado | tornado watch |
if a tornado is spotted a _____ ______ is issued | tornado warning |
what are three other icy precipitations besides (dry or wet) snow | hail, sleet, freezing rain |
the supernatural weather maker | God |
I fly high and I am easy to sight, for I look like a mare's tail all wispy and white | cirrus |
a heap cloud am I, but I fly so high that I look like fish scales in the sky | cirrocumulus |
I'm patchy and puffy all bumpy and white I soar in the sky at a medium height | altocumulus |
I'm a thickening sheet at medium height that tries very hard to bock the sunlight | altostratus |
like a blanket that's darkish-gray I fly low to drizzle your day | stratus |
While other clouds in the sky are found I'm the one who stays near the ground | fog |
I'm a layer cloud that is true, yet bumpy and rolling I fly in your view | startocumulus |
I'm a thin cloud sheet that sails very high I cover or dull the deep blue of the sky | cirrostratus |
I'm a heavy blanket all dark and gray when I bring rain I stay for the day | cumul-on-imbus |
I'm small and light and puffy and white I'm seen in good weather when the sun shines bright | cumulus |
on hot summer days I thunder and shout pouring raindrops and hail until I wear out | nimbostratus |