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Name Period Date Energy Transformation Test Review What is the following describing? Word bank: chemical energy, electrical energy, energy, energy conversion, heat (thermal) energy, law of conservation of energy, light (radiant) energy, mechanical energy, nuclear energy, sound energy. 1. The ability to do work that end up as light, heat, or work on a machine. energy 2. Energy that moves objects from place to place. mechanical energy 3. Energy that is released by a chemical reaction. chemical energy 4. Energy that comes from electrons within atoms. electrical energy 5. Energy that is associated with vibrations of matter. sound energy 6. Energy from the motion of atoms and molecules within an object heat (thermal) energy 7. Energy contained in the nucleus of an atom nuclear energy 8. Energy that can move through empty space light (radiant) energy 9. The change of energy from one from to another energy conversion 10. Energy cannot be created or destroyed law of conservation of energy Answer the following questions. 11. Almost all energy on earth can be traced back to the ultimate source of what energy source? solar energy 12. Make an energy path that shows how energy can get to a light bulb? There are lots of correct answers including: sun water dam light bulb sun air wind turbine light bulb sun corn ethanol plant light bulb 13. Name some ways that we use energy? There are lots of correct answers including: we light buildings, propel vehicles, and communicate messages with energy 14. The purpose of a nuclear power plant is to transform nuclear energy into electricity. This is done in steps starting with a nuclear reaction which generates heat to produce steam. The steam in turn is used to turn a generator which finally produces electricity. What is the pathway the energy takes from nuclear to electrical? nuclear thermal mechanical electrical 15. What do wind turbines, hydroelectric dams, and most power plants have in common? All use generators to produce electrical current 16. What has historically been some reasons we use fossil fuels instead of solar power? There are lots of answers including: fossil fuels are cheaper, we already have the infrastructure set up for fossil fuels and don’t like to change, etc. 17. What is the type of energy that is in the food we eat, batteries, and in a match? chemical energy 18. What type of energy is produced and wasted during most energy transformation? thermal (heat) energy 19. What would be an energy pathway from the sun to a bicycle? sun chemical energy stored in food chemical energy stored in muscles kinetic energy 20. Why aren’t energy conversions 100% efficient? some of the energy gets converted to less useful forms (like heat) and drifts away Give 5 examples of everyday items that either use or produce the following types of energy: Mechanical: 1. 2. 3. 4. 5. Kick a ball bicycle car drum arrow Chemical: 1. 2. 3. 4. 5. food wood; coal battery gasoline muscles Electrical: 1. 2. 3. 4. 5. Powerplant battery lightning video game generator Sound: 1. 2. 3. 4. 5. Heat/Thermal: 1. 2. 3. 4. 5. stove fire oven microwave engine Nuclear: drum speakers piano voice thunder 1. Sun 2. atom bombs 3. stars 4. radioactivity 5. nuclear power plants Light/Radiant: 1. 2. 3. 4. 5. sun light bulbs plant computer satellites Potential: 1. 2. 3. 4. springs arrows dams roller coasters 5. pendulum