5.6 FORCE and MOTION

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Alexina Weaver
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$B. Light was reflected by the prism. C. Light was refracted by the prism. D. Light was transmitted by the prism 42. Sam and Rodolfo made identical model cars. Each car weighed 100 grams.$

1 41. A group of students studied light. They conducted an experiment using a flashlight and a prism. Which of the following conclusions did the students make about the experiment? A. Light was absorbed by the prism. B. Light was reflected by the prism. C. Light was refracted by the prism. D. Light was transmitted by the prism 42. Sam and Rodolfo made identical model cars. Each car weighed 100 grams. Sam set his car at the top of a ramp and measured the distance the car traveled after it got to the bottom. Rodolfo set his car halfway down the same ramp and measured the distance his car traveled. In this demonstration, which variable did the boys manipulate (change)? A. The angle of the ramp B. The distance traveled by the car. C. The height where the car starts. D. The weight of the car. 1

C. a solid. D. a vacuum. 46. Use the information below to answer the following question(s).

2 44. In science and technology class, Lee is learning to light a bulb using a switch, a battery, and some wire. When the switch is closed, which circuit will light bulb? A. C. B. D. 45. A sound wave can be transmitted through all of the following except A. a gas. B. a liquid. C. a solid. D. a vacuum. 46. Use the information below to answer the following question(s). A flashlight is a system of parts that work together, as shown in the diagram below What type of energy is produced when the battery is put into the flashlight? A. electrical and light B. electrical and sound C. sound and light D. sound and heat 2

3 48. A class wants to perform an experiment to create sound by using a circuit. Which of the following materials below would best help the students conduct the experiment? A. two wires, battery, light bulb B. two wires, light bulb, switch C. two wires, door bell, switch D. two wires, battery, door bell 49. Which of the following forms of energy can travel by vibrating particles of air? A. electrical B. light C. magnetic D. sound 50. In Mandy s kitchen, two appliances sit on the counter, a microwave oven and a bread machine. What type of energy do these appliances use and produce? A. The appliances use electrical energy and produce mechanical energy. B. The appliances use sound energy and produce heat and nuclear energy. C. The appliances use electrical energy and produce solar and sound energy. D. The appliances use electrical energy and produce heat and sound energy. 51. Energy appears in many forms. What form of energy is lightning? A. electrical energy B. mechanical energy C. magnetic energy D. sound energy 3

4 53. Benjamin wants to create sound by using a circuit. He gathers the following materials for his experiment: two wires, a battery, a buzzer, a light bulb, and a switch. Which of the following materials below would best help him conduct this experiment? A. two wires, a battery, a light bulb B. two wires, a switch, a light bulb C. two wires, a buzzer, a battery D. two wires, a switch, a buzzer 54. Which of the following would not be a form of energy? A. sound B. lightning C. fog D. thunder 55. This diagram shows two boxes hanging over a pulley. The boxes are fastened to the opposite ends of the same piece of rope. The rope does not stretch or break. What will happen in this situation? A. Box 1 will move up, and Box 2 will move down. B. Box 1 will move down, and Box 2 will move up. C. Both boxes will not move D. Both boxes will move down. 4

5 57. Ernest was learning about electric circuits. If he wanted to complete the circuit, which of the following should he attach at point A and B? A. Ernest attached a penny at point A and an eraser at point B in the circuit. B. Ernest attached a toothpick at point A and an eraser at point B in the circuit. C. Ernest attached a penny at point A and connected the wires together at point B. D. Ernest attached an eraser at point A and connected the wires together at point B. 58. Your skin becomes warm when you stand in sunlight because your skin light. A. transmits B. refracts C. reflects D. absorbs 60. Modern automobiles are tested for collision safety using models of human beings often called crash test dummies. These dummies are actually quite smart. They are often fitted with sensor devices that can record their motion and force of impact during an automobile collision. When the car accelerates from a standing start, the crash test dummy appears to be pressed backward into the seat cushions. Which of the following best explains why this happens? A. The crash test dummy gets lighter as the car accelerates. B. The car is moving forward faster than the crash test dummy. C. There is no reaction to the force of the car taking off. D. Gravity is pulling the crash test dummy in the direction the car is moving. 5

6 61. Which statement is true about parallel circuits? A. They contain separate branches through which current can flow. B. They are usually called open circuits. C. They provide one path through which current can flow. D. They cease to function when one part of the circuit is disconnected. 62. Which force keeps a garbage truck from sliding or skidding on a curve? A. gravity which causes the garbage truck to slow down B. moving water on the street C. friction between the wheels and and street D. moving air that pushes against the garbage truck 64. Which of the following is an example of refraction? A. A man combs his hair while looking in a mirror. B. A woman feels warm wearing black on a bright day. C. A man thinks a fish in water is closer than it really is. D. A room with brown walls becomes brighter when it is painted white. 6

7 65. Use the diagram below to answer the following question. A ray of light shines on a mirror at the angle shown above. Which diagram shows what will happen to the light after it strikes the mirror? A. C. B. D. 66. Riding a bicycle to power a television uses A. radiant energy to produce mechanical energy. B. mechanical energy to produce radiant energy. C. electrical energy to produce mechanical energy. D. mechanical energy to produce electrical energy. 67. This diagram shows a ball rolling down an inclined plane. The position of the ball is labeled for each second it travels. Which best describes the motion of the ball? A. getting faster each second B. getting slower each second C. maintaining the same motion D. constantly changing direction 7

8 68. Which of the following objects acts as a lever when pulling a nail? A. hammer B. head of nail C. board D. point of nail 70. Which of the following diagrams represents a parallel circuit? A. C. B. D. 71. There was an accident at a power plant and many homes have lost electricity. People who live in those homes can still cook food using all of the following except A. a gas oven B. a solar oven C. a microwave oven D. a propane grill 8

9 72. Gus accidentally dropped his watch and the lens broke. Instead of buying a new one, he decided to take it to a jewelry store to repair it. When he got it back Gus noticed that the numbers appeared bigger. What is the most probable conclusion? A. The lens was replaced with the same size convex lens. B. The lens was replaced with a thicker convex lens. C. The lens was replaced with a thin concave lens. D. The lens was replaced with a thick concave lens. 74. A student is riding a bike and applies the brakes. Which most helps the bike to stop? A. friction B. gravity C. heat D. momentum 75. Electricity traveling through a wire is an example of A. a force applied by a simple machine. B. energy flowing through the water cycle. C. Earth s gravitational pull on an object. D. energy being transferred from place to place. 9

Chapter 2: Forms of Energy

Chapter 2: Forms of Energy Goals of Period 2 Section 2.1: To describe the forms of energy Section 2.2: To illustrate conversions from one form of energy to another Section 2.3 To describe energy storage