Causes of Climate Change (AQA GCSE Geography): Flashcards
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Practise the cards
14 cards from this deck
How long have humans been changing climate?
How long have humans been changing climate?
Last 150 years
What do orbital changes affect?
What do orbital changes affect?
Amount of solar radiation Earth receives
Climate effect when Earth orbits closer to sun
Climate effect when Earth orbits closer to sun
Warmer climate
What do orbital changes affect in ice ages?
What do orbital changes affect in ice ages?
Glacial periods
What do volcanic eruptions eject into atmosphere?
What do volcanic eruptions eject into atmosphere?
Large quantities of ash
Effect of volcanic ash on Earth's surface
Effect of volcanic ash on Earth's surface
Reflects & blocks sun's rays, cooling Earth
Frequency of solar output changes
Frequency of solar output changes
Every 11 years
What sunspots indicate about climate
What sunspots indicate about climate
More sun energy, warmer climate
What does burning fossil fuels release?
What does burning fossil fuels release?
CO2 into the atmosphere
What does farming livestock produce?
What does farming livestock produce?
Methane
Why rice paddies contribute to global warming
Why rice paddies contribute to global warming
Flooded fields emit methane
What plants do with CO2
What plants do with CO2
Remove it from atmosphere & convert to organic matter
What greenhouse gases do with outgoing heat
What greenhouse gases do with outgoing heat
Absorb it, reflect some back to Earth
Effect of too much greenhouse gas
Effect of too much greenhouse gas
Too much sun energy trapped, planet warms up