WorksheetsThe Sulfur Cycle
Total questions: 10
Worksheet time: 6mins
Why is sulfur important to organisms?
To make DNA, RNA and ATP.
To make amino acids and proteins.
To make carbohydrates.
To make fats.
What are 2 sources of hydrogen sulfide?
Burning of fossil fuels.
Breakdown of sulfates by bacteria.
Volcanic emissions.
Animals eating plants.
What is directly formed when the sulfur in coal is burned?
Hydrogen sulfide
Sulfuric acid
Nitrogen oxides
Sulfur dioxide
How does sulfur return to the soil? Choose all that apply.
Dry deposition of ammonium sulfate
Wet deposition of sulfuric acid
Humans add fertilizers containing sulfates to the soil
Decomposition of dead plants and animals
How do humans affect the sulfur cycle? Choose all that apply.
Using fertilizers containing sulfate
Dumping plastic in the ocean
Burning fossil fuels, especially coal
Mining of sulfur
Which of the following gases contribute to acid rain, when they dissolve in rain water? Choose all that apply.
Oxygen
Sulfur oxides
Helium
Nitrogen oxides
What are some sources of sulfur dioxide in the air? Choose all that apply
when phosphate goes through mineralization
burning of fossil fuels
when dimethyl sulfide emitted from marine algae reacts with oxygen in the air
when hydrogen sulfide emitted by volcanoes reacts with oxygen in the air
What is formed when sulfur dioxide reacts with oxygen in the air?
ammonium sulfate
hydrogen sulfide
sulfur trioxide
sulfuric acid
What dissolves in rain water to form sulfuric acid, which contributes to acid rain?
nitrogen dioxide
sulfur trioxide
carbon dioxide
sulfur dioxide
What are some effects of acid rain? Choose all that apply.
It leaches toxic minerals from the soil into waterways
It corrodes metal and carbonate statues
It can cause death to plants and aquatic organisms
It contributes to the melting of ice caps, leading to sea level rise
