climate change physical Flashcards
physical causes (5 cards)
1
Q
Volcanic eruptions
A
ashes and sulphur dioxide are projected into the atmosphere blocking the sun rays out so the temperature decreases
2
Q
milancovitch theory
A
the earths orbit changes around the sun, if the earth is closer to the sun its warmer if its further its colder
3
Q
sunspot activity
A
every 11 years the sun goes thru a cycle of solar fluctuations, when the sunspot activity is high it is warmer
4
Q
ocean currents
A
if ocean currents change directions they can cool down certain areas, an example is el nino
5
Q
melting permafrost
A
melting permafrost can release large ammounts of methane, this increases global temperatures