Climate change 2

Question 1

What is evidence for climate change?(long term)

Answer 1

Ice cores showing oxygen isotopes what temperature the earth would be and ocean sediments with different organisms buried in show the conditions for the organisms to survive in and also oxygen isotopes yet again

Question 2

What is a glacial period?

Answer 2

When ice is growing in our world

Question 3

What is an interglacial period?

Answer 3

When ice is retreating

Question 4

What is short term evidence for climate change?

Answer 4

Direct instrument readings, Glacial retreat, Arctic sea ice, Rising sea ice and tree flowering and bird migration advancing

Question 5

Natural causes for climate change?

Answer 5

Milankovitch cycle, Solar output and Volcanic activity

Question 6

What is the Milankovitch cycle?

Answer 6

The earth’s eccentricity and the orbit changing over time and the earth becoming closer and further away from the sun. The axis of the earth can also change and the greater the angle the greater the difference between the summer and the winter.

Question 7

What is Volcanic activity?

Answer 7

Volcanoes erupting, Sulphur dioxide going into the atmosphere and mixing with water vapour to create an aerosol going into the earths atmosphere acting as a shield for the ultra-violet radiation so the earth gets cooler.

Question 8

What is solar output?

Answer 8

Sunspots can make the earth less hot because less solar radiation is being emitted.

Question 9

How do humans cause climate change?

Answer 9

Fossil fuels, agriculture and deforestation

Question 10

Fossil fuels

Answer 10

50% of emissions, burning them release carbon dioxide

Question 11

Agriculture

Answer 11

Methane due to cows burping, paddy fields

Question 12

Deforestation

Answer 12

Clearing forests on a huge sale destroy a carbon sink so by burning them we release carbon dioxide into the atmosphere.

Question 13

How can we do mitigation?(4)

Answer 13

Aforestation, Renewable energy, Carbon capture storage-removing carbon dioxide from the atmosphere, turning it into a liquid, building a well under the ocean and storing it there, international agreements

Question 14

How can we do adaptation?(4)

Answer 14

Change agricultural production by using drought resistant species, Desalination from sea water and removing salt out of it, reduce water consumption by retro fitting (designing things that use less water) and adapting to rising sea levels by building barriers e.g. Themes Barrier