1. The Sulfur Cycle Complex Simple Reactions Impacts Locations Reservoirs Compounds Jillian and Michelle

2. Sulfur Cycle Cyclic movement of sulfur in different chemical forms from the environment to organisms and then back to the environment Solid forms of sulfur Home

3. Simplified, everyday version of the Sulfur Cycle Home

4. Sulfur Cycle: shows not only where the sulfur comes from, but the chemical reactions and how it moves throughout the biosphere. Home

5. SO 4 -2 salts stored under ocean sediments Enters system through natural processes H 2 S released from active volcanoes and organic matter SO 2 released from volcanoes SO 4 -2 salts released through sea spray Marine Algae produce DMS Affects cloud coverage and climate Home

6. It reacts with water to produce H2SO4 Acid deposition which harms trees and aquatic life Home

7. Burning coal and oil to produce electric power –Accounts for 2/3 of human inputs of SO2 Refining petroleum to make gas, heating oil and other products releases sulfur Using smelting to convert sulfur compounds of metallic minerals into free metals –Ex: Copper, lead, zinc Refinery that releases large amounts of sulfur Home

9. Locations Atmosphere Deep ocean Found near active volcanoes Largest found deposits of sulfur on Earth Home

10. Organic Compound DMS (CH 3 SCH 3 ) – dimethyl sulfide –Serve as nuclei for the condensation of water into droplets found in the clouds Emissions can affect cloud coverage and climate Swamps, bogs, and tidal flats Home

11. Reservoirs: Organic—Earth’s crust, mineralization, and metallic minerals Inorganic—Acid deposition Home