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Chapter 15 –Energy-Flashcards 1. Work is a transfer of Energy, mass, motion 2. The energy of motion is called Kinetic, potential, work 3. A small 20kg canoe is floating downriver at speed of 2 m/s. Find the canoe’s KE. 20J, 40 J, 100J 4. An object’s gravitational potential energy is NOT directly related to which of the following? Its mass, it speed, acceleration due to gravity 5. Which of the following is an example of an object with elastic PE? A wind-up toy that has been wound up, a stretched rubber band, both examples 6. A 4 kg cat is resting on top of a bookshelf that is 3m high. What is the cat’s PE? 12J, 18 J, 118J 7. The energy stored in gasoline is Chemical , mechanical , nuclear 8. Nuclear power plants are designed to convert nuclear energy into Chemical energy, electrical energy, mechanical energy 9. Solar cells convert what type of energy into electrical energy? Chemical, mechanical, electromagnetic 10. Which of the following statement is true according to the law of conservation of energy? Energy cannot be destroyed Energy can be converted from one form to another Both statements 11. The equation E = mc2 relates energy and Force, mass, work 12. Biomass energy is what type of energy stored in living things? Chemical, nuclear, thermal 13. Nonrenewable energy resources do not include Coal, oil, hydrogen fuel cells 14. Fossil fuels currently account for the majority of the world’s energy use because they are Nonpolluting, renewable, relatively inexpensive and readily available 15. A drawback of solar energy is that it Produces water pollution, depends on the climate, is not a renewable resource 16. A benefit of a hydrogen fuel cell is that its byproduct is Carbon dioxide, water, uranium 17.Energy of an object increases when ? is done on the object. Force, mass, work 18. Energy and work are measured in the SI unit called the Newton, joule, watt 19. If the ? of an object doubles, its KE doubles Mass, speed, velocity 20. Energy that is stored due to position or shape is called KE, PE, thermal energy 21. When a pole-vaulter flexes the pole, the pole-vaulter increases the pole’s ? PE Chemical, elastic, gravitational 22. The sum of the KE and PE of an object is called its Conversion, conservation, mechanical energy 23. All energy can be considered as KE, ?, or the energy in fields. PE, thermal energy, nuclear energy 24. Wind turbines convert ? energy into electrical energy. Kinetic, potential, thermal 25. “Energy cannot be created or destroyed” is a statement of the law of conservation of Energy, mass, matter 26. In the equation E=mc2, c is the speed of constant, light, energy 27. Energy resources that exist in limited amounts and once used, cannot be replaced except over the cource of millions of years are called ? energy resources. Nonrenewable, renewable, polluting 28. Geothermal energy, in addition to being renewable, offers the benefit of being Polluting, nonpolluting, nonrenewable 29. Turning off unused lights or appliances is an example of energy Conservation, conversion, transformation 30.At which location does the ball have the least gravitation PE? A, C, D 31. Compare the gravitational PE of the ball locations B and E. B is less than E, B = E, B is greater than E 32. Does the total mechanical energy of the ball between locations A and F ever equal to zero? Yes, no 33. Is the total mechanical energy of the ball conserved as the ball bounces? Yes, no