Resources

1
Resources

• Gifts from the Earth and Sun

2
Energy Resources Group Activity

• Humans use many different materials in order to
  use energy
• Where does energy come from?
• Sun (which?)
• Earth itself (which?)
• Energy resources are either
• Renewable or
• Nonrenewable
• Energy resources each have
• Advantages and
• Disadvantages
• Not distributed equally around globe

Solar, wind, hydroelectric, biofuels, fossil fuels
Geothermal, nuclear fission, hydrogen
3
Soil

• Soil formation takes time
• Essential for growing crops, etc.
• Soil erosion and conservation
• Good agricultural practices like windbreaks,
  contour plowing, terracing
• Soil contamination fertilizers, pesticides,
  salinization from farming
• Soil depletion certain plants use more than
  others, so crops are rotated

4
Mineral Resources Gold mining lab

• Are nonrenewable and have environmental impacts
• Metals (greatest economic value) like gold,
  silver, copper, iron, uranium
• Ore rock that contains enough of a metal to
  be extracted economically
• Nonmetals like gypsum, talc, sulfur, gems
• Other resources like gravel, sand
• Like energy resources, mineral resources are not
  equally distributed on the earth
• Modern civilization depends on them
• What do you use that has minerals in it?
• Find 20 things in the room made of them
• NJ mineral resources activity

5
Vegetation and animals

• Deforestation issues infertility of rain forest
  soils causing excess cutting of trees
• Importance
• Food
• Erosion control
• Habitat for animals
• Paper and wood
• Recycling oxygen

6
Air

• Maintaining the composition cycles will be
  covered later
• Evolution of the atmosphere - review
• Air pollution
• Cars, factories burning fossil fuels produces
  CO, NO2, SO2, particulates
• Ozone(at the surface) and smog are byproducts of
  others above
• Lead from smelters
• Acid rain already discussed
• The heat budget global warming and ozone
  depletion more in climate

7
Water ArcExplorer Water activity hw

• Water budgets supply demand like money
• Sources surface, ground, ocean, ice
• Pollution
• Toxic chemicals agriculture home
  (pesticides), industrial wastes, sewage, garbage
  dumps
• Salt runoff and Oil spills
• Eutrophication (nitrogen fertilizers and
  phosphates from detergents) causing low O2 levels
  in water
• Overuse and conservation -
• Saltwater intrusion
• Aquifer depletion
• Ground level subsidence
• Importance of oceans oxygen and climate
• Water PowerPoint After the Storm Video

8

• Lakes can become polluted and undergo
  eutrophication, a process in which plant and
  animal decay uses up oxygen in the water. This
  causes the death of some less-tolerant species.
  This process can be speeded up by greater amounts
  of nutrient in the water. This can be
  human-caused when fertilizer from farms or homes,
  phosphate detergent or excess animal waste enters
  the water