Climate change

Question 1

What are 4 pieces of evidence for climate change?

Answer 1

• Records showing increasing levels of CO2
• Changing patterns in temperature records
• Analysis of pollen grains from peat bogs indicates which plant species were presnet before the peat bog formed
• Dendrochronology

Question 2

What is dendrochronology?

Answer 2

A new tree ring is added each yeardue to the growth of cambium cells. Width of ring indicates the temperature and moisture of that year

Question 3

Whatis athropogenic climate change?

Answer 3

Changes in meteorological conditions caused by human activity e.g burnign fossil fuels, deforestation

Question 4

What is the greenhouse effect?

Answer 4

Greenhouse gases e.g carbon dioxide and methane absorb infrared radiation from the Sun.

Question 5

How can models of future climate change be generated?

Answer 5

Extrapolate data. Models assume patterns continue

Question 6

State 2 geological effects of climate chnage

Answer 6

rainfall patterns change
seasonal cycles change

Question 7

How can climate change affect planst and animals?

Answer 7

Distribution of species and migratory patterns change. Mnay spcies move north to cooler areas. Increases interspecifc competition
- selection pressures change
- Natural selection may not occur quickly enough in some populations
- Disruption to life cycles

Question 8

Define carbon neutral

Answer 8

Process does not cause a net change in atmospheric CO2 levels

Question 9

What is Q10?

Answer 9

Temperature coefficient. Measures the rate of change of a recation when temperature is increased by 10 degrees.