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Causes of Climate Change
- Natural
- Variations in the earths
orbit
- Stretch- earth's orbit around the sun
changes from circle to ellipse so the sun
is further away from the earth
- Tilt- on the earths axis
between 21.8 and 24.4
changes the amount of energy
the earth receives from the
sun
- Wobble- means the seasons
will swap over this a cycle of
22,000 years
- Stretch- earth's orbit around the sun
changes from circle to ellipse so the sun
is further away from the earth
- Variations in the solar output- Sunspots are
darker areas on the sun that increase solar
energy output increase and decrease over 11
years
- Meteor impacts- Throw up huge amounts of
material into the atmosphere this can block
out sunlight for months or years changing the
climate
- Volcanic Eruptions- eject large amounts
of material into the atmosphere
- Variations in the earths
orbit
- Human
- Enhanced greenhouse gas emissions-
Gases absorb outgoing energy so less is
lost in space keeping the planet warm but
too much energy can cause the earth to
warm up increased since the industrial
revolution
- Destruction of natural CO2 sinks- keep
CO2 out the atmosphere. Plants take in
CO2.
- Enhanced greenhouse gas emissions-
Gases absorb outgoing energy so less is
lost in space keeping the planet warm but
too much energy can cause the earth to
warm up increased since the industrial
revolution
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