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The Sulfur and Carbon Cycle

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The Sulfur and Carbon Cycle By: Victoria, Drew, Rheanna, Brittany, David, Jessica Carbon Cycle Chemical Reactions Involved: Photosynthesis: Air and water ... – PowerPoint PPT presentation

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Title: The Sulfur and Carbon Cycle


1
The Sulfur and Carbon Cycle
  • By
  • Victoria, Drew, Rheanna,
  • Brittany, David, Jessica

2
Carbon Cycle
3
Chemical Reactions Involved
  • Photosynthesis
  • Air and water molecules and the energy from the
    sun to produce a simple sugar such as glucose and
    oxygen molecules as a by product.
  • During photosynthesis plants use carbon dioxide
    and produce oxygen.

4
Combustion/Metabolism Reaction
  • During combustion/metabolism oxygen is used and
    carbon dioxide is a product. The whole purpose of
    both processes is to convert chemical energy into
    other forms of energy such as heat.

5
Inorganic Reservoirs
  • NONE

6
Organic Reservoirs
  • The oceans are a major carbon storage of a
    reservoir. They contain dissolves oxygen and
    carbon in the water.
  • (Example) As water warms, more dissolved carbon
    returns to the atmosphere, just as more carbon
    dioxide fizzes out of a carbonated beverage when
    it warms.
  • Terrestrial rocks
  • Fossil Fuels
  • The atmosphere (mainly carbon dioxide)
  • Land food webs (producers, consumers,
    decomposers, and detritivores)

7
Pathway of Movement
  • In the atmosphere carbon is stored as CO2,
    methane (CH4), and other organic compounds. These
    move into the atmosphere from decomposition of
    matter, respiration of organism, combustion,
    volcanic activity, burning fossil fuels, and
    others.
  • Carbon moves out of the atmosphere by
    photosynthesis, dissolution of water, and
    weathering of rock. The plants use photosynthesis
    to take CO2 out of the atmosphere to make sugars.
  • In the hydrosphere carbon is stored as dissolved
    CO2 in water. Gaseous carbon dissolves into the
    ocean because it is cold. Carbon moves out of the
    oceans by photosynthesis (plankton and
    cyanobacteria), degassing of warm seas, and
    deposition in marine sediments.
  • In the biosphere carbon is stored as living or
    recently dead animals, plants, or micro-organism
    in the oceans and on land. Carbon moves out of
    the biosphere by respiration and decomposition.

8
Impact of Human Intervention
  • Withdrawing large quantities of fresh water, in
    some heavily populated or heavily irrigated
    areas, these have led to ground water depletion
    or intrusion or ocean salt water into underground
    water supplies.
  • Clearing vegetation for various reasons
  • 1) Increases runoff
  • 2) Reduces infiltration that recharges ground
    water supplies
  • 3) Increases flood risk
  • 4) Accelerates soil erosion
  • Modifying water quality by
  • 1) Adding nutrients and other pollutants
  • 2) Changing ecological processes that purify
    water naturally

9
Sulfur Cycle
10
Chemical Reactions Involved
  • The chemical processes help produce hydrogen In
    the atmosphere.
  • When the sulfur and the water in the atmosphere
    mix they make sulfuric acid which is put into the
    rain and put onto the earth surface

11
Pathway of Movement
  • Sulfur is put into the atmosphere by volcanoes
    and factories putting it out
  • Sulfuric acid is rained and made into fog which
    puts it into the oceans and onto the land.
  • On the land the plants absorb the sulfur, which
    is eaten by the animals
  • When the plants and animals die their sulfur gets
    put back into the earth
  • Then the sulfur from the earth gets put back into
    the magma which is erupted by the volcanoes and
    the land is used by some factories

12
Organic Reservoirs
  • Soil
  • Plants

13
Impact of Human Intervention
  • We are tying to come up with cleaner ways to run
    factories so we put less sulfur into the
    atmosphere thus reducing the sulfuric acid in the
    rain which makes it better for the plants

14
Inorganic Reservoirs
  • Deep oceanic rock
  • Sediments
  • Freshwater
  • Ice
  • Atmosphere
  • Seas
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