1. Chapter 8 Energy Sources and the Environment

2. 8-1 Fossil Fuels Energy Resources Energy use in the U.S.
Energy is used many ways
Law of Conservation of Energy
Energy use in the U.S.
Which source do we use the
most?
How do we use this energy?

3. 8-1 Fossil Fuels Fossil Fuel Formation How do they form?
Why are fossil fuels used?
How do we transform the chemical energy stored in fossil fuels?

4. 8-1 Fossil Fuels
Petroleum-
How is it processed?
How do we use it?

5. 8-1 Fossil Fuels
Natural Gas
How is it processed?
How do we use it?

6. 8-1 Fossil Fuels
Coal
How is it processed?
How do we use it?

7. 8-1 Fossil Fuels Creating electricity
Chemical energy converted into electrical energy
How efficient are fossil fuel burning power plants?
What happens to the energy that is not converted into electrical energy?

8. 8-1 Fossil Fuels Cost of fossil fuels Release of particulates
Release of carbon dioxide
Non renewable energy sources

9. 8-2 – Nuclear Energy Fusion Fission
Atoms combine at very high temperatures to release energy
On the Sun!!
Fission
Atoms split apart and energy is released
Many located all around the U.S.

10. 8-2 – Nuclear Energy Nuclear Reactors
Uses energy from controlled nuclear reactions
Nuclear fuel
Fuel rods
Nuclear chain reaction

11. 8-2 – Nuclear Energy Nuclear Power Plants Benefits of Nuclear Power
Produce electricity similar to fossil fueled plants
Benefits of Nuclear Power
Risks of Nuclear Power

12. 8-2 – Nuclear Energy Release of radioactivity
Chernobyl (April 26, 1986)

13. 8-2 – Nuclear Energy
Disposal of radioactive waste

14. 8-3 – Renewable Energy Resources
Energy Options
Renewable resources
Replaced faster than humans can consume them

15. 8-3 – Renewable Energy Resources
Solar Energy
Photovoltaic cells –
Convert solar energy into electricity

16. 8-3 – Renewable Energy Resources
Hydroelectric Energy
Moving water creates electricity
Can use the potential energy of water on a turbine to create electricity
Can also use tidal and wave energy to spin turbines and create electricity

17. 8-3 – Renewable Energy Resources
Wind Energy
Windmills convert wind energy into electrical energy

18. 8-3 – Renewable Energy Resources
Geothermal energy
Thermal energy from inside the Earth is harnessed to spin turbines

19. 8-3 – Renewable Energy Resources
Alternative fuels
Hydrogen fuel cells -
Biomass -

20. 8-4 – Environmental Impacts
Population and carrying capacity
World population –
Carrying capacity -

21. 8-4 – Environmental Impacts
People and the Environment
Impact on Land
Agriculture
Deforestation
Urban development
Waste
National and state parks

22. 8-4 – Environmental Impacts
People and the Environment
Impact on Water
Amount of freshwater available
Pollution
Industry
Oil and gas
Human waste

23. 8-4 – Environmental Impacts
People and the Environment
Impact on Air
Air pollution
Photochemical smog
Chlorofluorocarbons (CFCs)
Acid rain
Reducing Pollution