Sulfur Cycle

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

Tags

NGSS.MS-ESS3-3

NGSS.MS-ESS3-4

What are 2 sources of hydrogen sulfide?

• Burning of fossil fuels.

• Breakdown of sulfates by bacteria.

• Volcanic emissions.

• Animals eating plants.

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 dissolves in rain water to form sulfuric acid, which contributes to acid rain?

• nitrogen dioxide

• sulfur trioxide

• carbon dioxide

• sulfur dioxide

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-5

what happens to sulfur as organisms die and decompose?

• some of the sulfur is again released as a sulfate and some enters the tissues of microorganisms

• it is gone for forever

• it is transferred into energy

• it is absorbed into the ground

Tags

NGSS.MS-LS2-3

Sulfur can be added to the atmosphere by

• burning coal, oil and gasoline

• respiration

• nitrogen fixing bacteria

• decomposition

What is the primary form of sulfur found in the atmosphere?

• Sulfur dioxide (SO2)

• Hydrogen sulfide (H2S)

• Sulfur trioxide (SO3)

• Elemental sulfur (S)

Tags

NGSS.HS-PS1-2

Which process in the sulfur cycle involves the conversion of sulfate to hydrogen sulfide by bacteria?

• Oxidation

• Reduction

• Photosynthesis

• Respiration