Lesson 11: Global warming

Question 1

What is global warming?

Answer 1

Global warming:

Gradual increase of the Earth’s surface temperature.

Question 2

How is carbon monoxide formed?

Answer 2

Carbon monoxide formed by incomplete combustion.

Question 3

What are the effects of carbon monoxide?

Answer 3

• Increase greenhouse effect

- Poisonous for humans: displace oxygen in red blood cells.

Question 4

How is carbon dioxide formed?

Answer 4

Carbon dioxide is formed by complete combustion.

Question 5

What are the effects of carbon dioxide?

Answer 5

• Increase greenhouse effect.

- Dizines, headache, breathing issues

Question 6

How is carbon soot formed?

Answer 6

Product of incomplete combustion.

Question 7

What are the effects of carbon soot?

Answer 7

• Contributes to global warming.
• Alters clouds: global dimming.
• Breathing issues

Question 8

What are the 3 greenhouse gases?

Answer 8

• Methane
• Carbon dioxide
• Water vapour

Question 9

What do greenhouse gases do?

Answer 9

Trap longer waves of reflected infrared radiation from the sun.

Question 10

What type of radiation is emitted from the sun (include the wavelength)?

Answer 10

Short wave length, infrared radiation.

Question 11

How is the wavelength of the radiation emitted from the sun different from that reflected from the Earth’s surface?

Answer 11

It has a longer wavelength than the sun’s radiation.

Question 12

What happens to the radiation from the sun when it reaches Earth?

Answer 12

• Some is absorbed.

- Some is reflected .

Question 13

What is climate change?

Answer 13

Climate change:

Long term change of weather patterns.

Question 14

What is the enhanced greenhouse effect?

Answer 14

Enhanced greenhouse effect:

Increasing levels of greenhouse gases that trap more radiation from the sun.

Question 15

What has caused increased levels of carbon dioxide?

Answer 15

• Deforestation
• Burn fossil fuels
• Peat bog

Question 16

What is peat?

Answer 16

Peat is partially decayed vegetation formed in boggy areas.

It can be used as a fuel, this releases carbon dioxide.

Question 17

What are the effects and consequences of global warming?

Answer 17

• Increased sea levels: flood low land.
• Melting ice caps: Habitat loss/ sea levels increase.
• More extreme weather: Decrease crops
• Increased ocean/ land temp: change habitats, crop changes.

Question 18

What two gases form acid rain?

Answer 18

• Nitrogen oxides

- Sulphur dioxide

Question 19

What does acid rain lead to?

Answer 19

• Lower pH of lakes: damage equatic life
• Lower pH of aricultural crops.
• Erode limestone buildings
• Breathing/ Health issues.

Question 20

What are some ways we can reduce the effect of fossil fuels?

Answer 20

• Reduce consumption
• Use alternative fuel
• Clean emissions
• Carbon capture

Question 21

What has caused increase levels of methane?

Answer 21

• Growing rice crops.

- Rising number of cattle

Question 22

What is the atmosphere?

Answer 22

Layer of gases that surround the Earth.