1. Review for: Unit 7 Chapter 4 – Energy Chapter 6 – Thermal Energy

2. #1 The type of energy which describes the motion of an object is ______ energy. A. Potential B. Kinetic C. Thermal D. Chemical

3. #2 An object can increase its kinetic energy by increasing its ______. A. Speed B. Size C. Height D. Specific heat

4. #3 The type of energy that is associated with an object’s position is called ___ energy. A. Potential B. Kinetic C. Thermal D. Chemical

5. #4 A rock sitting on a desk has ______ energy. A. Potential B. Kinetic C. Thermal D. Chemical

6. #5 Any type of energy that is stored is considered ______ energy. A. Potential B. Kinetic C. Thermal D. Chemical

7. #6 What is the correct unit for energy? A. Watts B. Newtons C. Joules D. kilograms

8. #7 The type of energy in an object that can stretch or compress is ____ energy A. Gravitational potential B. Chemical potential C. Elastic potential D. Kinetic

9. #8 A book and a feather sitting next to each other on a shelf have _____ potential energies. A. the same B. Different

10. #9 According to the Law of Conservation of Energy, energy ______________. A. can be created or destroyed. B. can change forms but cannot be created or destroyed. C. in the universe is constant. D. Answers B and C are correct.

11. #10 _____ energy is the total kinetic and potential energies in a system. A. Thermal B. Mechanical C. Chemical D. Chuck Norris

12. #11 A clothes iron changes electrical energy into thermal energy. A. True B. False

13. #12 When a baseball is thrown from the outfield to home plate, its kinetic energy is least ______. A. At the peak of its flight B. When it leaves the player’s hand C. When it lands in the catcher’s mit D. Right after it leaves the player’s hand

14. #13 When a baseball is thrown from the outfield to home plate, its potential energy is greatest ______. A. At the peak of its flight B. When it leaves the player’s hand C. When it lands in the catcher’s mit D. Right after it leaves the player’s hand

15. #14 If an object has energy then that object has the ability to _______. A. Make sandwiches B. Beat Chuck Norris C. Cause a change D. Get an “A” in Mr. Schlueter’s class

16. #15 The potential energy of a swing is 200 J at its highest point and 50 J at its lowest point. If mechanical energy is conserved, what is the kinetic energy of the swing at its lowest point? A. 250 J B. 200 J C. 100 J D. 150 J E. 50 J

17. #16 What is the potential energy of a truck with a mass of 3,000 kg at the top of a 75 m hill? A. 3,075 J B. 225 kJ C. 2.21 MJ D. 2.25 MJ

18. #17 What is the kinetic energy of a truck with a mass of 3,000 kg moving at 50 m/s? A. 3,050 J B. 75 kJ C. 150 kJ D. 3.75 MJ

19. #18 _____ is the average kinetic energy of the particles of a material. A. Total kinetic energy B. Temperature C. Thermal energy D. Heat

20. #19 The sum of the kinetic and potential energies of all the particles of a material is the _______. A. Mechanical Energy B. Temperature C. Thermal energy D. Heat

21. #20 ____ is thermal energy that flows from an object at a higher temperature to an object at a lower temperature. A. Specific Heat B. Temperature C. Thermal energy D. Heat

22. #21 The amount of heat required to raise the temperature of 1kg of a material by 1°C is called ____. A. Specific Heat B. Temperature C. Thermal energy D. Heat

23. #22 In the equation Q=mC(T f -T i ) the letter “Q” represents _____. A. Specific Heat B. Mass C. Thermal energy D. Temperature final E. Temperature initial

24. #23 In the equation Q=mC(T f -T i ) the letter “C” represents _____. A. Specific Heat B. Mass C. Thermal energy D. Temperature final E. Temperature initial

25. #24 _____ is the transfer of thermal energy by collisions between particles in matter. A. Conduction B. Convection C. Radiation D. Heat

26. #25 _____ is the transfer of thermal energy in a fluid by the movement of warmer and cooler fluid. A. Conduction B. Convection C. Radiation D. Heat

27. #26 ____ is the transfer of thermal energy by electromagnetic waves. A. Conduction B. Convection C. Radiation D. Heat

28. #27 _____ and _____ require matter in order to transfer thermal energy. A. Conduction and radiation B. Convection and radiation C. Conduction and Convection

29. #28 A material in which heat flows slowly is a(n) ______. A. Conductor B. Insulator C. Convector D. Radiator

30. #29 Why are gases usually better insulators than solids and liquids? A. The particles in gases are closer together which doesn’t allow heat to travel through very easily. B. The particles in gases are farther apart, not allowing the energy to be transferred by the collisions between the particles. C. Gases are not better insulators than solids and liquids. D. Because that’s what Chuck Norris decided.

31. #30 Of these materials which is the best insulator? A. Air B. Copper C. Iron D. Aluminum

32. #31 Gasoline and diesel engines are _____. A. Heat pumps B. External combustion engines C. Internal combustion engines D. Heat movers

33. #32 #32 A device that heats your home by removing thermal energy from one location and transferring it to another location at a different temperature is a(n) ____. A. Heat mover B. Radiator C. Conductor D. Heat engine

34. #33 Solar collectors are parts of ________. A. Passive solar heating systems B. Active solar heating systems C. Internal combustion engines D. External combustion engines

35. #34 The process by which engine fuels burn is ____. A. Radiation B. Convection C. Combustion D. Insulation

36. #35 How much energy is absorbed by a 1kg wooden chair that is heated from from 25°C to 40°C? A. 2,640 J B. 26,400 J C. 62,760 J

37. QUESTIONS!???!??!! Are there any problems you want me to work through? Any questions you want to ask? The test covers CHAPTERS 4 & Study! The test covers CHAPTERS 4 & 6! Study!