Chapter 5 Guided Reading

1. Chapter 5 Guided Reading Section 1 Only!

2. Which of the following best describes energy? • Energy involves motion. • Energy is an ability to change location. • Energy involves speed. • Energy is the ability to do work.

3. Energy is the ability to do work.

4. Which of the following is not a form of energy? • Chemical • Locomotive • Thermal • Radiant

5. Locomotive

6. A fire warms you by transferring ____________________ energy.

7. thermal

8. Which of the following best defines kinetic energy? • The energy a moving object has because of its motion. • It is the stored energy due to position. • The energy stored by something that can stretch or compress. • The energy stored in chemical bonds.

9. The energy a moving object has because of its motion.

10. Which of the following is an example of an object using kinetic energy? • A rollercoaster that has reached the top of the first hill. • A pitcher’s arm that is pulled back on the mound. • A jogger in the park. • A runner at the starting block of the track.

11. A jogger in the park.

12. In a car engine, burning fuel produces heat, which causes gases to expand, producing ___________________.

13. Kinetic energy

14. You can calculate kinetic energy by using the equation ____. a. KE (J) = m (kg) x 9.8 m/s2x h (m) • KE (J) = w (m) x h (m) • KE (J) = 1/2 m (kg) x v2 (m2/s2) • KE (J) = 9.8 m/s2x1/2 m (kg)

15. KE (J) = 1/2 m (kg) x v2 (m2/s2)

16. Energy in the form of motion is ____________________.

17. Kinetic energy

18. What is potential energy? • The energy a moving object has because of its motion. • It is the stored energy due to position. • The energy stored by something that can stretch or compress. • The energy stored in chemical bonds.

19. It is the stored energy due to position.

20. Which of the following is Not an example of potential energy? • A rollercoaster that has reached the top of the first hill. • A pitcher’s arm that is pulled back on the mound. • A jogger in the park. • A runner at the starting block of the track.

21. A jogger in the park.

22. When you ride a playground swing, your potential energy is greatest at the highest point. • True or False

23. true

24. Energy that is stored is _______________________.

25. Potential energy

26. You can calculate gravitational potential energy by using the equation ____. a. GPE (J) = 1/2m (kg) ´ 1/2h (m) b. GPE (J) = m (kg) ´ 9.8 m/s2 ´ h (m) c. GPE (J) = h (m) ´ 9.8 m/s2 d. GPE (J) = 1/2h (m) ´ w (m)

27. GPE (J) = m (kg) ´ 9.8 m/s2 ´ h (m)

28. Energy stored in food you eat is __________________ energy.

29. Chemical potential energy

30. _____________________energy is stored in a stretched rubber band.

31. Elastic potential

32. A book sitting on a shelf has _____________________ energy.

33. Gravitational potential energy

34. Which best explains the difference between elastic potential energy and chemical potential energy? • EPE is energy stored by things that stretch or compress. CPE is energy stored in chemical bonds. • EPE is energy stored by objects due to their position above Earth’s surface.CPE is energy stored in chemical bonds. • EPE is energy stored in chemical bonds. CPE is energy stored by objects due to their position above Earth’s surface. • EPE is energy stored by things that stretch or compress. CPE is energy stored by objects due to their position above Earth’s surface.

35. EPE is energy stored by things that stretch or compress. CPE is energy stored in chemical bonds.

36. How are gravitational potential energy and chemical potential energy alike? • Both are stored energy that is converted into one of the 4 types of energy for use. • Both are measured in calories. • Both become kinetic energy when they are finally released. • Both are calculated using math

37. Both are stored energy that is converted into one of the 4 types of energy for use.

38. What do you need to know to calculate gpe? • Mass and acceleration • Mass and distance • Acceleration and distance • Mass and Velocity

39. Mass and distance

40. What is the constant in the formula in GPE=mgh? • Mass (m) • Distance (d) • Height (h) • Gravitational acceleration (g)

41. Gravitational acceleration (g)

42. Which is the best explanation for why a large book has a greater gPE than a feather? • GPE is based on mass, gravity, and the distance the object has to move or fall. The book has a greater mass than the feather; hence it has a greater GPE. • GPE is based on speed, gravity, and the distance the object has to move or fall. The book has a greater speed than the feather; hence it has a greater GPE.

43. GPE is based on mass, gravity, and the distance the object has to move or fall. The book has a greater mass than the feather; hence it has a greater GPE.

44. All energy is conserved. It is converted from one form to another. to What is gpe converted when an object falls? • Mechanical Energy • Electrical Energy • Chemical Energy • Kinetic Energy

45. Kinetic Energy

46. When you move your hand or foot, your body has converted potential energy into ____________________ energy.

47. kinetic

48. Which best explains the difference between kinetic energy and potential energy? • Kinetic Energy is stored energy and potential is the energy of motion. • Potential energy is stored energy and kinetic energy is the energy of motion. • Potential energy is stored energy and kinetic energy is wasted. • Potential energy is useless and kinetic energy is the energy of motion.

49. Potential energy is stored energy and kinetic energy is the energy of motion.

50. Chapter 5 Guided Reading Section 2