University:
Campbell University
Course:
PHYS 221 | General Physics I
Academic year:

2023
Views:

37

Pages:

3
Author:

Jace Woodward

KEY Forms of Energy and Energy Transformations LT: I can identify and describe the different forms of potential and kinetic energy. LT: I can give/explain examples of energy transformations. Potential and Kinetic Energy Identify each of the following forms of energy as either potential energy (P) or kinetic energy (K). Sound K Nuclear P Elastic P Electric K Chemical P Gravitational P Thermal K Electromagnetic K a. Choose one of the above forms of potential energy and describe why it fits in this category. Answer – Nuclear is potential as the energy is stored in the nucleus of an atom. Splitting the nucleus releases this energy. b. Choose one of the above forms of kinetic energy and describe why it fits in this category. Answer – Electric is kinetic as the energy is in the electrons which are moving from atom to atom. This movement of the electrons, which contain the energy, is movement of energy. Forms of Energy Match the energy form(s) to the description provided. Questions may have more than one answer. ____H________l. A boulder at the top of a hill C, E, J 2.Release of energy from the Sun a. Translational motion b. Electric G 3. A coiled spring c. Electromagnetic (radiant) D 4. Batteries not in use d. Chemical B 5. The energy that runs a refrigerator e. Nuclear C, E, J F A, F, J D 6. Nuclear fission reactors 7. The thunder from a storm 8. Rubbing your hands together 9. Gasoline stored in a tank f. Sound g. Elastic h. Gravitational i. Rotational motion j. Thermal (heat) D 10. Food before it is eaten A, F 11. A guitar string vibrating I 12. A top spinning F, H 13. Sledding down a hill J, C 14. Candle burning G 15. A taut rubber band (fully stretched) Transformation of Energy II Describe a scenario with the following energy transformations (do not include examples from above): a. Electric energy being converted into sound energy Answer – an amplifier playing music from a tablet. b. Chemical energy being converted to motion energy Answer – a car engine. c. Thermal energy being converted to sound energy Answer – a wood stove thermal fan making sound. d. Gravitational potential energy being converted to motion energy Answer – rolling down a hill on a skateboard. e. Electric energy being converted into electromagnetic energy Answer – an L.E.D light bulb.