Climate change Flashcards

1
Q

Long term causes of climate change

A

Milankovitch cycles
Tectonic plate (ocean currents)

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2
Q

Milankovitch cycles

A

100,000 year orbit
41,000 year tilt
21,000 year wobble

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3
Q

Short term causes of climate change

A

Volcanic emissions (sulfur dioxide)
Variation in solar output

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4
Q

What are polar glacial environments

A

Found in high latitudes e.g Artic
They have low precip and extreme cold temp

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5
Q

What are Alpine glacial environments

A

Found at high altitudes in mountain ranges e.g Alps
They have high levels of precip, wide temp range

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6
Q

What is a glacier

A

Slow moving bodies of ice in valleys

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7
Q

What is a peri glacial environment

A

Doesn’t feature glaciers, usually found next to a glacier characterised with permafrost with varying seasonal temperatures

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8
Q

Characteristics of a polar glacier

A

Polar environments e.g Antartica
Cold based glacier
Frozen to bedrock with melting only occurring at surface in summer

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9
Q

Characteristics of temperate glacier

A

Alpine environments e.g Alps
Warm based glacier
Ice temp usually close to 0
More melting

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