Water Cycle - Carbon Cycle - Nitrogen Cycle
Quiz - gcsescience.com.

1. Water vapour gets into the air when

a) New rocks become exposed

b) Water evaporates from the surface of the sea

c) Hydrogen in the air reacts with oxygen

d) Acid rain falls onto limestone

 

2. Precipitation is when

a) Water becomes solid during chemical reactions

b) Water becomes liquid during chemical reactions

c) Trees drop their leaves

d) Water falls from clouds as rain or snow

 

3. Carbon dioxide is released into the atmosphere

a) During combustion and respiration

b) To control global warming

c) To repair the ozone layer

d) During photosynthesis

 

4. Carbon dioxide is removed from the atmosphere

a) During combustion and respiration

b) When dead things decay

c) To repair the ozone layer

d) During photosynthesis

 

5. Plants take up nitrogen from the soil in the form of

a) Mud

b) Nitrite

c) Nitrate

d) Nitrogen gas

 

6. Bacteria in the soil which turn nitrite into nitrate are called

a) Nitrogen fixing bacteria

b) Nitrifying bacteria

c) Denitrifying bacteria

d) Neon bacteria

 

7. Bacteria in the soil which turn nitrate
      into nitrogen gas are called

a) Nitrogen fixing bacteria

b) Nitrifying bacteria

c) Denitrifying bacteria

d) Neon bacteria

 

                       
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