ࡱ>  EbjbjSS 11||$D>V5777777$H[Q[j55@N-W!0A@[[| : Physical Science Unit 4 Energy ch. 15 16 Standard: SPS7 transformation and the flow of energy ID:A Matching fill in the blanks of the following energy transformations by using the types of energy below a.mechanicald.electricalb.chemicale.electromagneticc.thermalf.nuclear 1. Photosynthesis = nuclear to electromagnetic to_________ 2. running a lawn mower = chemical to thermal to ___________ 3. Running = chemical to_____________ 4. nuclear power plant = nuclear to___________ to electric 5. solar cells on a house = nuclear to electromagnetic to________ to electric Match the following descriptions with the types of energy transfer below a.conductionc.radiationb.convection 6. occurs between a heating pad and your skin 7. Can occur between the sun and Mars 8. does not require matter 9. how food is heated in a pot on the stove 10. occurs in oceans True/False Indicate whether the statement is true (A) or false (B). 11. Heat flows spontaneously from hot objects to cold objects. 12. A potholder keeps you from burning your hand when you pick up a hot pot - this means that a pot holder is a good conductor. 13. An 8oz glass of ice water has less thermal energy than a 8oz glass of warm water. 14. The type of thermal energy transfer that takes place in fluids is mostly convection. 15. A material that conducts thermal energy well is called a thermal insulator. Multiple Choice Identify the choice that best completes the statement or answers the question. 16. A 13-kg sled is moving at a speed of 3 m/s. What is the kinetic energy of the sled? a.39 Jb.117 Jc.19.5 Jd.15.5 Je.58.5 J 17. The main difference between kinetic energy and potential energy is that a.although both energies involve motion, only kinetic involves position.b.kinetic energy involves position and potential energy involves motion.c.although both energies involve position, only potential involves motion.d.kinetic energy involves motion and potential energy involves position. Specific Heat Table  18. Based on the specific heat table above, which of the following substances would make the best insulator? a.Graniteb.Concretec.Sandd.Marble 19. Based on the specific heat table above, which substance has a specific heat of 390 c/J kg-1 K-1? a.Brassb.Ironc.Zincd.Copper 20. Based on the specific heat table above, which of the following substances is the best thermal conductor? a.Hydrogenb.Paraffinc.Aird.Glass 21. A 3.00 kg toy falls from a height of 10.0 m. What is its potential energy at the top of the fall? a.29.4 Jb.98.0 Jc.294 Jd.0.98 J  Figure 15-3 22. At what location in Figure 15-3 does the ball have the most gravitational potential energy? a.Cb.Bc.Ed.De.A 23. Compare the gravitational potential energy of the ball at locations B and E, it is the same at both locations because a.the height is the same.c.the ball is traveling at the same velocityb.the kinetic energy has increasedd.the potential energy has decreased 24. At what location in Figure 15-3 does the ball have the most kinetic energy? a.Eb.Ac.Bd.Ce.D 25. How many kilojoules of heat must be transferred to a 480-g aluminum pizza pan to raise its temperature from 22C to 234C? The specific heat of aluminum in this temperature range is 0.96 J/gC. a.101,760 Jb.10,137.6 Jc.480.8 Jd.98,000 J 26. The energy of motion is called a.thermal energy.b.kinetic energy.c.work.d.potential energy. 27. A 0.002 kg coin, which has zero potential energy at rest, is dropped into a 10.0 m well. After the coin comes to a stop in the mud, what is its potential energy? a.0.196 Jb.0.196 Jc.0.000 Jd.0.020 J 28. Which of the following energy forms is involved in winding a pocket watch? a.elastic potential energyc.Non-mechanical energyb.gravitational potential energyd.electrical energy 29. As the temperature of an object rises, so does the (SPS7) a.mass of the object.c.potential energy of the object.b.thermal energy of the object.d.specific heat of the object. 30. Matter is needed to transfer thermal energy by (SCSh5) a.conduction.b.convection.c.radiation.d.both a and be.a, b, and c 31. Which of the following energy forms is involved in a pencil falling from a desk? a.elastic potential energy and kinetic energyc.chemical potential energyb.Non-mechanical energyd.gravitational potential energy 32. What is the kinetic energy of a 72.0-kg sky diver falling at a terminal velocity of 79.0 m/s? a.2,844 Jb.5,688 Jc.11,376 Jd.224,676 J 33. Why is the gravitational potential energy of an object 1 meter above the moons surface less than its potential energy 1 meter above Earths surface? a.The objects mass is less on the moon.b.The objects weight is more on the moon.c.The objects acceleration due to gravity is less on the moon.d.both a and c  Figure 15-1 34. At what point(s) would the potential energy of the pendulum bob in Figure 15-1 be the greatest? (SPS7.a) a.B and Db.Ac.A and Ed.C and Ee.C 35. In Figure 15-1, at what point would the Kinetic energy be the greatest? a.Ab.Ec.Cd.Be.D 36. Work is a transfer of a.mass.b.motion.c.force.d.energy. 37. What property of an object is related to the average kinetic energy of the particles in that object? (SPS7) a.massb.specific heatc.temperatured.conductivity 38. Heat is the transfer of thermal energy because of a __ difference. a.conductionb.specific heatc.radiationd.temperaturee.convection 39. The transfer of energy as waves moving through space is called ___ a.specific heatb.convectionc.thermal expansiond.conductione.Radiation Vocabulary: Match the following words with the correct definition 40. A form of energy consisting of changing electric a. Absolute Zero and magnetic fields b. Specific Heat 41. The process of changing energy from one form to another. c. Electromagnetic energy 42. A temperature of 0 kelvins or 217.13 Celsius. d. Nuclear Energy 43. The amount of heat needed to raise the temperature of e. Energy Conversion one gram of a material by one degress Celsius 44. The energy stored in atomic nuclei of radioisotopes. 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