Causes of Climate Change (OCR GCSE Geography A (Geographical Themes)): Flashcards
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Practise the cards
14 cards from this deck
How long have humans impacted climate?
How long have humans impacted climate?
About 150 years
3 natural causes of climate change
3 natural causes of climate change
Orbital changes, volcanic activity, solar output
What orbital changes affect
What orbital changes affect
Solar radiation received & glacial periods
Effect of earth orbiting closer to sun
Effect of earth orbiting closer to sun
Warmer climate
What major volcanic eruptions eject
What major volcanic eruptions eject
Large quantities of ash into atmosphere
How volcanic ash affects climate
How volcanic ash affects climate
Reflects & blocks sun's rays, cooling earth
How often solar output changes
How often solar output changes
Every 11 years
What sunspots indicate
What sunspots indicate
More sun energy, warmer climate
3 human causes of climate change
3 human causes of climate change
Burning fossil fuels, farming, deforestation
What burning fossil fuels releases
What burning fossil fuels releases
CO2 into the atmosphere
Gas livestock farming produces
Gas livestock farming produces
Methane
Why rice paddies contribute to warming
Why rice paddies contribute to warming
Flooded fields emit methane
How plants affect CO2 levels
How plants affect CO2 levels
Remove CO2 from atmosphere
What the greenhouse effect is
What the greenhouse effect is
Greenhouse gases absorb & reflect heat back to earth