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Energy and Energy Resources

Energy and Energy Resources. Chapter 9. Preview. CRCT Preparation. Chapter 9. CRCT Preparation. 1. The objects in the table are all on shelves in a bookcase. Which of the objects is located on the highest shelf? A the book B the plate C the framed picture D the statue. Chapter 9.

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Energy and Energy Resources

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  1. Energy and Energy Resources Chapter 9 Preview CRCT Preparation

  2. Chapter 9 CRCT Preparation 1. The objects in the table are all on shelves in a bookcase. Which of the objects is located on the highest shelf? Athe book B the plate C the framed picture D the statue

  3. Chapter 9 CRCT Preparation 1. The objects in the table are all on shelves in a bookcase. Which of the objects is located on the highest shelf? Athe book Bthe plate C the framed picture D the statue

  4. Chapter 9 CRCT Preparation 2. Which of the following describes how energy is converted when a cat knocks a plant off of a counter? AThe gravitational potential energy of the cat is converted into kinetic energy. BThe kinetic energy of the cat is converted into gravitational potential energy. CThe gravitational potential energy of the plant is converted into kinetic energy. DThe kinetic energy of the plant is converted into gravitational potential energy.

  5. Chapter 9 CRCT Preparation 2. Which of the following describes how energy is converted when a cat knocks a plant off of a counter? AThe gravitational potential energy of the cat is converted into kinetic energy. BThe kinetic energy of the cat is converted into gravitational potential energy. C The gravitational potential energy of the plant is converted into kinetic energy. DThe kinetic energy of the plant is converted into gravitational potential energy.

  6. Chapter 9 CRCT Preparation 3. Which of the following is true of a closed system? AEnergy can be destroyed, but cannot be created. BEnergy can be created, but cannot be destroyed. CThe total amount of energy in the system stays the same. DThe system’s kinetic energy must equal its potential energy.

  7. Chapter 9 CRCT Preparation 3. Which of the following is true of a closed system? AEnergy can be destroyed, but cannot be created. BEnergy can be created, but cannot be destroyed. C The total amount of energy in the system stays the same. DThe system’s kinetic energy must equal its potential energy.

  8. Chapter 9 CRCT Preparation 4. Laboratory investigations show that when two cars traveling at the same speed have a head-on collision, the smaller car experiences more damage. Which of the following is a reasonable explanation for that fact? AThe larger car has more potential energy than the smaller car does. BMass has a greater effect on kinetic energy than speed does. CThe larger car experiences more friction than the smaller car does. DThe larger car has more kinetic energy than the smaller car does.

  9. Chapter 9 CRCT Preparation 4. Laboratory investigations show that when two cars traveling at the same speed have a head-on collision, the smaller car experiences more damage. Which of the following is a reasonable explanation for that fact? AThe larger car has more potential energy than the smaller car does. BMass has a greater effect on kinetic energy than speed does. CThe larger car experiences more friction than the smaller car does. D The larger car has more kinetic energy than the smaller car does.

  10. Chapter 9 CRCT Preparation 5. What is the kinetic energy of a 30 kg greyhound that is running at a speed of 17 m/s? A255 J B510 J C4,335 J D8,670 J

  11. Chapter 9 CRCT Preparation 5. What is the kinetic energy of a 30 kg greyhound that is running at a speed of 17 m/s? A255 J B510 J C 4,335 J D8,670 J

  12. Chapter 9 CRCT Preparation 6. Melissa made the sketches above to record everyday examples of types of energy. Which sketch shows kinetic energy? A1 only B2 only C3 only D1 and 2 only

  13. Chapter 9 CRCT Preparation 6. Melissa made the sketches above to record everyday examples of types of energy. Which sketch shows kinetic energy? A1 only B2 only C 3 only D1 and 2 only

  14. Chapter 9 CRCT Preparation 7. Which of the following describes how energy is converted when a toaster toasts bread? AElectrical energy is converted into thermal energy. BThermal energy is converted into light energy. CLight energy is converted into electrical energy. DElectrical energy is converted into chemical energy.

  15. Chapter 9 CRCT Preparation 7. Which of the following describes how energy is converted when a toaster toasts bread? A Electrical energy is converted into thermal energy. BThermal energy is converted into light energy. CLight energy is converted into electrical energy. DElectrical energy is converted into chemical energy.

  16. Chapter 9 CRCT Preparation 8. Which situation describes a conversion from kinetic energy into potential energy? AAn apple falls from a tree. BA duck moves through the water. CA rubber band is wrapped around stalks of broccoli. DA can rolls along the floor.

  17. Chapter 9 CRCT Preparation 8. Which situation describes a conversion from kinetic energy into potential energy? AAn apple falls from a tree. BA duck moves through the water. C A rubber band is wrapped around stalks of broccoli. DA can rolls along the floor.

  18. Chapter 9 CRCT Preparation 9. Tyrone went camping at Fort Mountain State Park in Chatsworth, Georgia. He got up early one morning to bike the trails in the park. After a big breakfast, Tyrone headed out on his bicycle ride. His bike’s headlight was powered by his pedaling. Describe two ways in which energy was converted from one form into another.

  19. Chapter 9 CRCT Preparation 9. Answer - Full-credit answers should include two energy conversions that would take place during the operation of the bicycle. Answers may include: • The chemical energy in Tyrone’s breakfast was converted into kinetic energy as he pedaled the bike. • The kinetic energy of the turning pedals was converted into thermal energy as a result of friction with the chain. • The kinetic energy of the turning wheels was converted into light energy as the headlight turned on.

  20. Chapter 9 CRCT Preparation 10. Meredith fills a teapot with water and puts it on the stove. She turns the gas burner on and waits for the water to boil. When the water is boiling, Meredith pours it into a cup with a teabag in it. She drinks the tea after it has cooled slightly. Describe three transfers of thermal energy in this example.

  21. Chapter 9 CRCT Preparation 10. Answers may include: • Thermal energy that is converted from chemical energy in the gas is transferred to the teapot. • The thermal energy in the teapot is transferred to the water particles in the teapot. • Some of the thermal energy is transferred to the air surrounding the teapot and the cup. • Some of the thermal energy in the tea is transferred to Meredith as she drinks the tea.

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