1. Natural Resources

2. Natural Resources
Natural resources are parts of the environment used by living organisms for food, shelter, and all other needs.
Examples: water, air, food, plants
Materials and energy needed to make cars, books, computers, gasoline and electricity
Renewable and nonrenewable resources

3. 1. Renewable Resources
Renewable resource is a natural resource that is recycled or replaced by ongoing natural processes.
Examples:
1. Water and carbon cycle through the Earth.
2. Food
Trees
Sunlight
Wind

4. RENEWABLE ENERGY SOURCES
e.g. biomass, solar, wind, wave, tidal, hydroelectric, geothermal
Takes a shorter time to form (e.g. decade or two)
Can be reused or is very abundant
Advantages
Won’t run out
Environmentally friendly
Disadvantages
Geographically selected
Inefficient

5. 2. Nonrenewable Resources
A nonrenewable resource is a natural resource that cannot be replaced once they are gone
B. Examples:
1. Minerals ( diamonds, sand, gravel, the graphite used to make pencils)
Metals( gold, silver, copper, tin)
Top soil – takes hundreds of years to replace
Forest – “

6. C. It is the raw material used to make: fuels, gasoline, plastics, chemicals, pesticides, fertilizers

7. 3. Fossil Fuels
A. Fossil Fuels include coal, natural gas, oil, gasoline, heating oil and kerosene.
However, the burning of fossil fuels is polluting our air and water, and put carbon in the air (greenhouse effect)
Used in: creating electricity, cars, factories

8. NON-RENEWABLE ENERGY SOURCES
e.g. fossil fuels (coal, oil, natural gas) and nuclear energy (uranium, plutonium)
Takes a long time to form (e.g. millions of years)
Cannot be reused
Advantages
Cheap
Readily available
Efficient
Multipurpose (e.g. oil for cars, heating)
Disadvantages
Running out
Polluting or radioactive

10. Questions What are natural resources?
Compare and contrast renewable and nonrenewable resources.
Explain why fossil fuels have this name?