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science U2
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give example for Greenhouuse gase
halons
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....
😉اØÙ„ا بوينت يعم
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.....................Used in extinguushing fire
halons
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................ is the coldest layer
mesosphere
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Calculate the height of mountain if the temperature at the foot is 30 and its top is ( -6)
The amount change in temp = temp. at its foot - at its top= 30-(-6) = 36 degree c    H of mountain = change in temp/ 6.5=36/6.5= 5.53 KM
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............ radiation has thermnal effect
infarred
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What happen when overuse of freon
Erosion of ozone layer increase, and also the temp. of the earth increase
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What happen when there are no van allen belts?
The harmful cosmic ray will reach the earth surface
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ozone layer is extends from ...... to ........ KM above sea level
20 to 40
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Write the scientific term : It is type of UV rays that doesn't pentrates the ozon layer by a percentage 100%
far UV rays
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true or false infared radiation has chemical effect
false UV
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G.R van- Allen Belts play an important role in protecting earth
Bec. they scatter the harmful charged cosmic radiation away from the earth
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............ is region between mesosphere and thermossphere
mesopause
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