Geography - Climate Change

Question 1

Deforestation

Answer 1

• Accounts for 33% of CO2 emissions

- Decreased carbon sink by 200,000 million tonnes

Question 2

Carbon Sink

Answer 2

Neutral reservoir of carbon that takes in MORE CO2 than IT RELEASES!

Question 3

Burning of fossil fuels

Answer 3

• Accounts for 66% of CO2 emissions

Question 4

Increased crop yield in Australia

Answer 4

Wheat yields have increased over the past 50 years by 30-50%

Question 5

Decreased crop yield in Mediterranean region of Southern Europe

Answer 5

Lead to increased need for irrigation

Question 6

Heat Waves

Answer 6

• A temp increase of less than 1 degree - increase probability of heat-related deaths by 2 and a half times
• In 2015, more than 2400 people (mostly labourers and farmers) died from heat waves

Question 7

El nino

Answer 7

Describes the appearance of warm surface water from time to time in the eastern equatorial Pacific

Question 8

La nina

Answer 8

Appearance of colder than average sea surface temperature in the central and east equatorial Pacific

Question 9

Global warming

Answer 9

The impact of increased temperature of the atmosphere

Question 10

Why is global warming due to human factors?

Answer 10

1) world temp has increased by 0.9 degrees in the past 100 years
2) since the Industrial Revolution, CO2 gases have increased by 30%

Question 11

Definition of cyclone

Answer 11

• low atmospheric pressure hazards
• forming over warm tropical seas
• converging and ascending air
• are accompanied by violent tropical storms
• can bring significant damage