Key Questions 2

Question 1

Give two ways recent human activities have increased the amount of atmospheric carbon dioxide

Answer 1

Burning fossil fuels,deforestation

Question 2

Give two ways recent human activities have increased the amount of atmospheric methane

Answer 2

Rice farming,cattle farming

Question 3

What is global warming?

Answer 3

An increase in the overall global average temperature

Question 4

What is global climate change ?

Answer 4

The change in long term weather patterns across the planet

Question 5

What are some possible effects of climate change?

Answer 5

Sea levels rising , extreme weather events, changes in the amount and time of rainfall, changes to ecosystems and habitats,polar ice caps melting

Question 6

What is a carbon footprint?

Answer 6

The amount of carbon a product,process or person releases into the atmosphere over its lifetime

Question 7

How is carbon monoxide formed and what is the danger associated with?

Answer 7

Incomplete combustion, danger is that it’s a colourless and odourless toxic gas

Question 8

How are particulates formed, and what are the dangers associated with it?

Answer 8

Incomplete combustion, dangers are global dimming, respiratory problems and potential to cause cancer

Question 9

How is sulphur dioxide formed and what are the dangers associated with it?

Answer 9

Sulfur impurities in fossil fuels react with oxygen during combustion,dangers are acid rain and respiratory problems

Question 10

How are oxides of nitrogen formed and what are the dangers associated with them?

Answer 10

Atmospheric oxygen and nitrogen react in the heat of a combustion engine, dangers are acid rain and respiratory problems