Earths Atmosphere

Question 1

What is it made up of

Answer 1

Nitrogen 78%
Oxygen 21 %
Argon < 1%
Carbon dioxide 0.04 %
Other gases < 1 %

Question 2

Describe the process of the greenhouse effect

Answer 2

1) short wave uv + visible light radiation reaches earth

2) ground heats up and emits infra red long wave radiation

3) some radiation escapes into space

4) greenhouse gases absorb the infrared and reemit it back towards earth

5) the earths atmosphere gets hotter

Question 3

Causes of the greenhouse effect

Answer 3

Burning fossil fuels
Over farming - cows burp methane
Deforestation
Landfill - methane
Rice fields - methane

Question 4

Effects of global warming

Answer 4

Climate change
Loss of habitats
Extreme weather
Rising sea levels
Melting ice caps
Extinctions
Crop failures / droughts

Question 5

What is carbon footprint

Answer 5

Amount of greenhouse gases emitted by a product / object during its lifetime

Question 6

4 Ways to reduce carbon footprint

Answer 6

Recycling
Electric cars
Reforestation
Public transport
Change diet

Question 7

Common Pollutants
How are they formed
What are the risks

C cm,cp,hc,sd,no

Answer 7

Carbon dioxide (Co2) , complete combustion, global warming

Carbon monoxide (Co) , incomplete combustion , toxic , deadly

Carbon particulates (c/s) , incomplete combustion, global dimming , respiratory issues

Hydrogen carbons (unburnt) , incomplete combustion, respiratory issues

Sulfur dioxide (SO2) , sulfur impurities, respiratory issues , acid rain

Nitrogen oxides (NOx) , high temperatures , smog , acid rain Nitrogen