Define eccentricity. What happens when the eccentricity is circular? What happens when it's oval?
the shape of the earth's orbit
When the orbit is circular, equal summers and winters occur.
When the orbit is oval, the summer and winters are cold.
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Define axial tilt. What happens when it's upright? What happens when it's not upright?
the tilt of the earth
When the tilt is upright, equal summers and winters occur.
When it's not upright, extreme summers and winters occur.
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Define procession. What happens as the earth gets wobblier?
The earth's wobble.
As the earth gets wobblier, more extreme weathers occur.
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What happens when the sunspot activity is at maximum?
The sun gives off more heat, large explosions occur on the sun's surface resulting in solar flares.
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What happens when the sunspot activity is at minimum?
The sun gives off less heat, this can lead to lower temperatures on the earth.
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How does volcanic activity affect climate change?
The ash from a volcano blocks out the sun. The sulphur dioxide released reflects the sun's heat away from the earth.
Eruptions cool the planet for many years.
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What are the three human causes of climate change?
Carbon dioxide, methane, nitrous oxides.
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How much carbon dioxide contributes to the greenhouse effect?
estimated 60%.
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Name 2 examples of where carbon dioxide comes from
Burning fossil fuels
Car exhausts
Deforestation
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How much methane contributes to the greenhouse effect?
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