greenhouse effect Flashcards
1
Q
what do greenhouse gases do
A
keep our planet warm to live on .
2
Q
what is step 1 to the greenhouse effect
A
short wave radiation passes through the atmosphere from the sun
3
Q
what happens to the short wave radiation when it hits the earth and atmosphere
A
some of it is reflected but most is absorbed and warms the surface
4
Q
what is emitted from earths surface
A
long wave or infrared radiation
5
Q
what happens to long wave radiation
A
some passes through the atmosphere but some is absorbed and re-emitted in all directions by greenhouse gas molecules
6
Q
what does re-emittion of long wave radiation cause
A
warm the earth surface
7
Q
what are the main greenhouse gases
A
methane, carbon dioxide and water vapour
