Physical geography Flashcards
what do orbital changes affect?
how much solar radiation there is
the earth receivers more energy which means…
more warming
stretch
earths orbit changes from circular to elliptical
this is called eccentricity
tilt
the earths axis is tilted on an angle as it orbits the sun
wobble
the earths axis wobbles like a spinning top known as precission
what do volcanic activities do?
they send out large quantities of material into the atmosphere
some of these reflect the suns rays back out into space so the earths surface cools
what does solar output do?
reduced solar output makes the earths surface become cooler IN SOME AREAS
how are humans causing global warming?
through greenhouse effects
what is the greenhouse effect?
some sunlight that hit the earth is reflected. some becomes heat
What happen if the greenhouse gas levels increases?
More energy is trapped and the planet warms up even more
What happenes when we burn fossil fuels?
carbon dioxide is released into the atmosphere
How does farming contribute to climate change?
flooded fields and cows emit methane
