C6.2 Earth Atmosphere

Question 1

What percentage of the Earths atmosphere is nitrogen?

Answer 1

78%

Question 2

What percentage of the Earths atmosphere is oxygen?

Answer 2

21%

Question 3

What percentage of the Earths atmosphere is argon?

Answer 3

0.9%

Question 4

What percentage of the Earths atmosphere is carbon dioxide?

Answer 4

0.04%

Question 5

How did Earth go from mostly carbon dioxide to oxygen?

Answer 5

Plants and algae photosynthesise by taking in carbon dioxide and producing oxygen

Question 6

What is a pollutant?

Answer 6

Substances released into the environment that may harm living things

Question 7

How are most atmospheric pollutants released?

Answer 7

Fossil fuels

Question 8

How is carbon monoxide produced?

Answer 8

Produced during incomplete combustion of fuels that contain carbon

Question 9

What does carbon monoxide do to our bodies?

Answer 9

Toxic colourless gas with no smell, when breathed in, carbon monoxide attaches to the haemoglobin protein in Red blood cells which reduces the amount of oxygen that the blood can carry. Causes drowsiness and maybe death

Question 10

Where are particulates produced?

Answer 10

In industrial processes like metal extraction

Question 11

How is particulates dangerous for our bodies?

Answer 11

The smallest particulates settle deep in the lungs and cause diseases like bronchitis

Question 12

How can nitrogen and oxygen be dangerous?

Answer 12

They react together at really high temperatures and if dissolved in the moisture of the clouds forming an acidic solution which falls as acid rain