Energy Resources

Production of Electricity (p. 159)

Vocabulary – “Renewable Sources of Energy”

(Chapter 5 – Section 2)• Solar Energy

• Solar Power Plants

• Solar Cells

• Passive Solar Heating

• Active Solar Heating

• Hydroelectric Power

• Wind Power

• Biomass Fuels

• Gasohol

• Geothermal Energy

• Hydrogen Power

Solar EnergyAdvantages/Disadvantages???

Solar Power Plants

Solar Cells

• How are solar cells

different than solar

power plants???

Passive Solar Heatingvs.

Active Solar Heating

Q. How does the house capture solar energy?

A. Active solar collectors on the roof, large windows on the south and west sides that act as passive solar collectors

Q. What does the equipment that is on the roof do?

A. Active solar cells on the roof generate electricity that can be stored in a battery in the basement.

Solar House

Q. What is the difference between active and passive solar heating systems?

A. Both convert sunlight into thermal energy, but only active systems use pumps and fans to distribute heat.

Hydroelectric PowerHow do we get electricity using a dam?

*Gavins Point Dam-Yankton, SD

*Advantages/Disadvantages???

Wind Energy

*How do we get

electricity using a

wind mill?

Advantages/Disadvantages???

Biomass Fuels

*What is Biomass?

*What is Gasohol?

Advantages???

Disadvantages???

Geothermal

Advantages/Disadvantages???

Hydrogen PowerIn what common substance is most

hydrogen on Earth found?

Advantages/Disadvantages???

Key Concepts

• The sun constantly gives off energy in the forms of light and heat.

• In addition to solar energy, renewable sources of energy include water, the wind, biomass fuels, geothermal energy and hydrogen.

Vocabulary – “Nuclear Energy”(Chapter 5 – Section 3)• Nucleus

• Nuclear Fission

• Controlled Chain Reaction

• Uncontrolled Chain Reaction

• Nuclear Fusion

“Nuclear Energy”Fission

and Fusion

•What is a nucleus?

•What is in a nucleus?

Nuclear Fission• What is a “Chain Reaction?”

• Give an example of a controlled and uncontrolled chain reaction

Controlled = ___________________

Uncontrolled = _________________

Nuclear Power Plant

Atomic Bomb

Nuclear Fusion

• What 2 nuclei combine with nuclear fusion?

Compare and Contrast

Fission Both Fusion

Key Concepts• During nuclear fission, when a neutron hits a

U-235 nucleus, the nucleus splits apart into 2 smaller nuclei and 2 or more neutrons.

• In a nuclear power plant, the heat released form fission reactions is used to change water into steam, which turns the blades of a turbine to generate electricity.

• In nuclear fusion, 2 H nuclei combine to create a He nucleus, which has slightly less mass than the 2 H nuclei. The lost mass is converted to energy.

Vocabulary – “Energy Conservation”

(Chapter 5 – Section 4)

• Efficiency

• Insulation

• Energy Conservation

Energy ConservationConservation by Recycling (1:38)

Energy Efficiency

• What is the most common way to improve efficiency of heating and cooling?

• Name ways that energy efficiency can be improved in lighting?

• Name ways that energy efficiency can be improved in transportation?

• How can YOU improve energy efficiency in your home, school, life?

Key Concepts• One way to preserve our current energy

resources is to increase the efficiency of our energy use.

• Another way is to conserve energy whenever possible.

Bill Nye – The Automobile (7:39)

The Hybrid Car• What is a fossil fuel?

• What type of fossil fuel is used by most automobiles?

• What problems are associated with the use of fossil fuels?

• What problems are associated with the way cars are fueled?

• What are some ways the individuals and governments have tried to solve some of the problems?