Study

science U2

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  • give example for Greenhouuse gase
    halons
  • ....
    😉احلا بوينت يعم
  • .....................Used in extinguushing fire
    halons
  • ................ is the coldest layer
    mesosphere
  • 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
  • ............ radiation has thermnal effect
    infarred
  • What happen when overuse of freon
    Erosion of ozone layer increase, and also the temp. of the earth increase
  • What happen when there are no van allen belts?
    The harmful cosmic ray will reach the earth surface
  • ozone layer is extends from ...... to ........ KM above sea level
    20 to 40
  • Write the scientific term : It is type of UV rays that doesn't pentrates the ozon layer by a percentage 100%
    far UV rays
  • true or false infared radiation has chemical effect
    false UV
  • G.R van- Allen Belts play an important role in protecting earth
    Bec. they scatter the harmful charged cosmic radiation away from the earth
  • ............ is region between mesosphere and thermossphere
    mesopause