Module 2 Energy in our Lives

1. Module 2 Energy in our Lives A special partnership between theGeorgia Department of Education and theEducational Technology Training Centers in support of the 8th Grade Physical Science Frameworks.

2. Powering Our World

3. STANDARDSContent and Characteristics S8P2. Students will be familiar with the forms and transformations of energy. • Explain energy transformation in terms of the law of Conservation of Energy. • Explain the relationship between potential and kinetic energy. • Compare and contrast the different forms of mechanical, heat, electrical and magnetic energy and their characteristics. S8P5. Students will recognize characteristics of gravity, electricity, and magnetism as major kinds of forces acting in nature. • Investigate and explain that electric currents and magnets can exert force on each other. S8CS1. Students will explore the importance of curiosity, honesty, openness, and skepticism in science and will exhibit these traits in their own efforts to understand how the world works. • Understand the importance of—and keep—honest, clear, and accurate records in science. • Understand that hypotheses can be valuable even if they turn out not to be completely accurate. S8CS2. Students will use standard safety practices for all classroom laboratory and field investigations. • Follow correct procedures for use of scientific apparatus. • Demonstrate appropriate techniques in all laboratory situations. • Follow correct protocol for identifying and reporting safety problems and violations. S8CS5. Students will use the ideas of system, model, change, and scale in exploring scientific and technological matters. • Observe and explain how parts can be related to other parts in a system such as the role of simple machines in complex machines. • Understand that different models (such as physical replicas, pictures, and analogies) can be used to represent the same thing. S8CS7. Students will question scientific claims and arguments effectively. • Identify the flaws of reasoning in arguments that are based on poorly designed research (e.g., facts intermingled with opinions, conclusions based on insufficient evidence). • Recognize that there may be more than one way to interpret a given set of findings. S8CS8. Students will be familiar with the characteristics of scientific knowledge and how it is achieved. Students will apply the following to scientific concepts: • When similar investigations give different results, the scientific challenge is to judge whether the differences are trivial or significant, which often requires further study. Even with similar results, scientists may wait until an investigation has been repeated many times before accepting the results as meaningful. S8CS9. Students will understand the features of the process of scientific inquiry. Students will apply the following to inquiry learning practices: • Investigations are conducted for different reasons, which include exploring new phenomena, confirming previous results, testing how well a theory predicts, and comparing different theories.

4. The question is… How is energy transferred to my house?

5. K W L Ex: Lots of things in my house use electricity. Ex: How does electricity get to MY house?

6. How is electricity created? • Draw a sketch of how YOU think electricity is made and how it gets to your house. Label as many things as you can. Write a short paragraph explaining the sketch.

7. Did you know? Electricity is the #1 form of energy consumption!

8. It’s the LAW! • The Law of Conservation of Energy states that • we cannot destroy energy, • but we can change it.

9. Change is Good Electric power plants change mechanical energy into electrical energy.

10. Power to the People! • The electrical energy is transmitted great distances to our homes by wires. We convert the electrical energy back into mechanical energy by way of motors in order to do work for us.

11. What do you use motors for at home?

12. Different energy sources People use different energy sources to make electricity. One source is fossil fuel. How many other types of energy sources can you think of?

13. Let’s look at the energy sources we use to generate electricity. Each had its advantages and disadvantages. People use whatever is available and economical. Next

14. biomass wind nuclear solar fossil fuel tidal hydroelectric wave geothermal Energy Sources

15. fossil fuelwind solar hydroelectric In a minute, we will break up into groupsand create presentations explaining how these are transformed to electrical energy in a power plant. nucleargeothermaltidalbiomasswave

16. Your presentation should include: • An explanation of how the energy source is transformed into electricity. • A couple of good websites on energy: • Energy Sources • The Secret Lives of Energy-Energy Generation

17. Your presentation should include: 2.Advantages and disadvantages of using the energy source.

18. Your presentation should include: • 3.A flow chart of the energy transformations that take place in the production of electricity. • Websites that might help: • Freemind • Mindomo • Mindmeister

19. Your presentation should include: 4. A labeled diagram of a generator.

20. Your presentation should include: 5. A picture of the type of power plant used with your energy source.

21. Your presentation should include: 6. A brief explanation of how the electricity is sent to your house from the plant.

22. Your presentation should include: 7. An explanation of the percentage of the world’s energy currently met by your energy source.

23. Your presentation should include: 8. A description of the political, economic, and environmental implications of your energy source.

24. My energy source is _____________

25. solar Example of a flow chart

26. Electrical Generator

27. Parts of a Generator Rotor Rotor Conductor Stator Stator Conductor

28. Bringing it Home • Now we will break into groups by the neighborhoods we live in. Each group will research and create a visual diagram of how electricity is made and transferred to • the homes in your • neighborhood.

29. Now finish your KWL, adding what you learned. K W L Ex: Lots of things in my house use electricity. Ex: How does electricity get to MY house?

30. Now you know… …how energy is transferred to your house.