Shared Flashcard Set

Details

earths atmosphere
#TURNUPPPpPpPpPpPpPpPpPpPpPpPpPpPpPpPpPpPpPpP
26
Science
7th Grade
04/13/2014

Additional Science Flashcards

 


 

Cards

Term
atmosphere
Definition
layer of gases that surround a plamt
Term
the atmosphere is made up of....
Definition
nitrogen 78%
oxygen 21%
and water vapor, carbon dioxide 1%
Term
one purpose of the atmosphere is.
Definition
provides us with oxygen
reason 1
Term
second purpose of the atmosphere is ..
Definition
stabilizes surface temperature (traps solar heat)
reason 2
Term
third purpose of the atmosphere is...
Definition
protects us from meteors (they will burn up)
reason 3
Term
fourth purpose of the atmosphere is....
Definition
the ozone layer protects us from harmful rays (uv)
reason 4
Term
what layer of the atmosphere do we live in
Definition
the troposhere
Term
does the temperature change as you move one layer to another?
Definition
yeah hottest closes to the earth
Term
atmospheric pressure
Definition
pressure caused by air molecules above
(the greatest at surface)
Term
what does the ozone layer protect against
Definition
UV rays
Term
does it absorb energy from rays?
Definition
yes
Term
what destroys the layer?
Definition
CFCs
Term
what does CFC stand for?
Definition
chlorofluorocarbon
Term
where is the ozone layer most destroyed?
Definition
theres a hole in antarctice
Term
have governments banned cfcs?
Definition
yes because of how damaging they are
Term
cfcs are released how?
Definition
through aerosols and refrigerators
Term
where does all energy originate
Definition
from the sun
Term
heat...
Definition
energy that flows from a hotter object to a cooler object
Term
radiation...
Definition
energy transferrd by waves - getting a sunburn
Term
conduction...
Definition
energy that is transferred by touch -burning you feet on hot sand
Term
convection...
Definition
energy transferred by currents (air or water) -warm air rising to the attic
Term
evaporation...
Definition
when water changes into water vapor
Term
condensation...
Definition
when water vapor changes to water
Term
precipitation...
Definition
when water droplets fall from the clouds
Term
run-off....
Definition
water in streams and rivers
Term
ground water...
Definition
Supporting users have an ad free experience!