1. Magnet and Energy Test review answers

2. 1. Describe the 5 types of energy. Mechanical- motion Thermal- heat Electrical Electromagnetic- light/waves Chemical- reaction- make something new (burning) (eating)

3. 2. Describe what happens at the poles of magnets. Poles are the strongest part N repel N S repel S N attract S

4. 3. What types of items are magnetic? Iron, Nickel, cobalt (steel contains Iron)

5. 4. Describe electromagnets. Include the parts and advantages to using one. Describe ways to change the strength of electromagnets. uses electricity to make magnetism battery, wire(coils), steel nail/bolt Advantage- turn off and on Change the strength- more coils***

6. 5. What is the difference between Renewable and Non-renewable resources? Give examples of each. Renewable- get more of it- solar, biomass, wind, geothermal, Hydrogen, hydroelectric Nonrenewable- can not get more of it- nuclear & fossil fuels (coal, oil, natural gas)

7. 6. Describe energy transformations: Candle- flame burning= electromagnetic (light) to thermal (heat) Windmill- mechanical to electrical

8. 6. Describe energy transformations: Motor = electrical to mechanical

9. 6. Describe energy transformations: Toaster- electrical to thermal

10. 6. Describe energy transformations: Flashlight- chemical (battery) to Electromagnetic (light)

11. Describe energy transformations: Car- chemical (fuel) to thermal (heat) to mechanical

12. Describe energy transformations: Refrigerator- electrical to mechanical (motor) to thermal

13. Describe energy transformations: Fan- electrical to mechanical Power plant- chemical (burn fuel – thermal energy to boil water) to mechanical (steam turns the turbine) to electrical p. 293 Study picture

14. Electric Power Plant Mechanical energy from steam turns turbine Boil water to make steam thermal Burn a fuel chemical Makes electricity

15. 7. Describe the steps of the scientific method. Give an example of each step. Problem- ask question Hypothesis- if …then… Experiment- step-by-step procedures Variables- control (comparison) constants (keep the same) Organize data- table and graph Conclusions- what did you learn

16. 8. What is the difference between the manipulated and responding variable? Manipulated Variable- what you change on purpose Ex: number of coils Responding variable- data, what you are measuring Ex: number of paperclips