1. Natural Resources

2. Two Categories of Natural Resources
Renewable – can be replaced Nonrenewable – cannot be replaced after they are used

3. Wood & Forests Forests are a basic natural resource
Forests have been used by humans for thousands of years
Humans have used forests for fuels, to make shelter and weapons

4. Tropical Rainforests of the World

5. Trees are a Raw Material for Other Products

6. Water as a Resource another renewable resource
For drinking, crops and power
Water power goes back thousands of years
Water is a renewable and recyclable resource

7. Modern Hydroelectric Plant

8. Hydroelectric Power

9. Water Problems Are Serious in Some Parts of the World

10. Nonrenewable Natural Resources Fossil fuels and minerals

11. Coal – a fossil fuel

12. Coal Mining

13. Anthracite Coal Anthracite Coal Also called Hard Coal Burns very hot
Contains the fewest impurities of all coal

14. World Coal Reserves

15. Oil Wells at Sea

16. Crude Oil – another fossil fuel

17. Oil Refinery crude oil is refined into products such as gasoline, kerosene and home heating oil

18. World Oil Reserves

19. U.S. Energy Use by Fuel

20. Iron Ore

21. Iron Ore Mining

22. Copper

23. History of Copper Copper was probably the first metal used by man.
Mixed with tin, it makes bronze, an extremely important metal before iron was in general use.

24. Bauxite Used mainly in the production of Aluminum.
Also for chemical cleaners.

25. Tin Tin Mining in Bolivia Tin with copper to make bronze
Tin has been mined as far back as Roman times

26. Tungsten Word means “heavy stone” Very high melting point
Used for filaments in light bulbs
Also, other electrical applications and X-Rays

27. Alternative Energy

28. Renewable Energy Meaning energy generated from renewable resources
Biomass energy is generated from agricultural and urban waste.
Energy generated by heat stored beneath the Earth's surface.

29. Solar Power

30. Wind Power

31. Biofuels to replace Gasoline

32. Power of Ocean Tides

33. Geothermal Heat from the Earth
Areas with high level of volcanic activity
Turn the heat into steam and use the steam power

34. Geothermal Heat Exchange System