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52 Pull the bow back even more. Gravity will pull the arrow down to the ground.

Cool down the metal ball by putting it in the freezer or cold water. 53 The greater the temperature the faster the molecules will move.

54 The metal paper clip would be pulled to the magnet. The plastic would not be attracted to the magnet, and the string would just lie on the base.

55 microwaves Visible light Ultraviolet light X rays

56 Ultraviolet light X-rays Visible light microwaves

57 Less pollution.

58 Student B is at a greater height than Student A. Student A’s velocity decreases as they hit the water which decreases the amount of KE.

59 Add sandpaper to the bottom of the wood. The pencils decrease the friction.

60 Opposite poles attract, like poles repel. NS S

61 sun Driving a car, heating the house, using the grill Solar energy Potential energy Kinetic energy

62 As distance between 2 objects decreases, the amount of gravity increases. A

63 It’s composition did not change, it just increased in size. The heat caused the molecules to move faster and farther apart. The composition of the ball did not change.

64 As mass increases, gravity increases. Mercury, Mars, Pluto