1. Forces & Motion BattleshipABCDE A1 B1 C1 D1 E1 A2 B2 C2 D2 E2 A3 B3 C3 D3 E3 A4 B4 C4 D4 E4 A5 B5 C5 D5 E5 1 2 3 4 5

2. A stone is thrown from the edge of a cliff. Its path is shown in the diagram. In which position does the stone have its greatest kinetic energy and in which position does it have its lowest potential energy? A 1 and 2 B 2 and 3 C 1 and 3 D 3 and 3

3. This flashlight uses three different forms of energy. Which of these shows the energy changes in the correct order? A Mechanical → heat → chemical B Heat → chemical → light C Electrical → mechanical → chemical D Chemical → electrical → light

4. The graph above shows a animal’s travel time in minutes during a 50 km walk. What was the animal’s average speed in kilometers per hour (km/m) during the walk? A 20 km/m B 1 km/m C 40 km/m D 55 km/m

5. 1.Which letter shows the ball when it has the maximum kinetic energy? 2. Which letter shows the ball when it has the maximum potential energy?

6. Which machine above will require the least amount of effort force to do the work? A. A B. B C. C D. They are all the same

7. Which best explains why a person using a ramp can load heavy boxes onto a truck more easily than a person can using only human strength? A. The person using a ramp needs less force. B. The person using human strength needs less force. C. The ramp reduces the weight of the boxes. D. Friction makes it harder to lift boxes without a ramp.

8. CARRIER HIT!!!!!!!! Which diagram shows the refraction of light as it enters water from the air? A B C D

9. Which diagram best shows the reflection of light? CARRIER HIT!!!!!!!!

10. Moving a heavy object with a lever will need less effort when… A. the fulcrum and effort are close together B. the fulcrum and resistance are close together C. the load and fulcrum are close together D. the load and force are close together CARRIER HIT!!!!!!!!

11. Egg Basketball Metal Plate Glass Vase 10 g 100 g 200 g 400 g Which of the objects shown on the chart above would require the most force to achieve an equal increase in speed on a frictionless surface? Aegg Bbasketball Cmetal plate D glass vase CARRIER HIT!!!!!!!!

12. A rocket applies an additional force of 10 Newtons to the 10 Newtons that are applied by the wheels. What is the net force if the parachute continues to apply 7 Newtons in the other direction? A 13N to the right B 13N to the left C 17N to the right D 27N to the left

14. What change is noticed in the amount of force needed to pull the block of wood? Explain why the round pencils in diagram 2 decrease the amount of force necessary to move the block of wood.

15. Keesha mows her neighbor’s lawn with a gasoline-powered lawn mower. Which best describes the transformation of energy that occurs? A. Chemical energy to kinetic energy to thermal energy B. Potential energy to kinetic energy to chemical energy C. Electrical energy to chemical energy to kinetic energy D. Thermal energy to kinetic energy to nuclear energy

16. A surface wave generated by an earthquake was recorded at Seismic Station 1. Forty seconds later the same wave was recorded at Seismic Station 2. What accounts for the time difference? F The origin of the wave is closer to Seismic Station 1. G The speed of the wave decreases with distance. H The wavelength is longer at Seismic Station 2. J The wave frequency increases when the wave passes through soil.

17. A woman doing yard work needs to move a large rock. The rock is too heavy to lift. She uses a long board and a steel triangle to make a lever. How does the lever help the woman move the rock? A The lever decreases the force needed to move the rock. B The lever increases the force on the rock parallel to the lever. C The lever changes the mass of the rock. D The lever decreases the amount of work required to move the rock.

18. A cement block is dropped from a helicopter. The block falls 100 feet. Which statement correctly describes the falling cement block? A. Its potential energy decreases as its kinetic energy increases. B. Its potential energy increases as its kinetic energy decreases. C. Its potential energy is unchanged as its kinetic energy decreases. D. Its potential energy is unchanged as its kinetic energy increases.

19. Each load in the picture above weighs 60 N. To lift the load using the single pulley, you would have to pull on the rope with a minimum force of 60N. To lift the load using the double-pulley system, with what minimum force would you have to pull on the rope? A.20 N B.30 N C.60 N D.120 N

21. The weight lifter used a force of 980 N to raise the barbell over her head in 5.21 seconds. Approximately how much work did she do in raising the barbell? A. 380 J B. 982 J C. 2,000 J D. 10,000 J

23. DescriptionForceDistance Lifting the Wagon28 Newtons.1 m Pulling the Wagon7 Newtons.4 m How much work is required to pull the wagon? A.2.8 J B.35 J C.5.6 J D..5 J

25. During a space walk, an astronaut lets go of a tool, causing it to float away and bounce off the side of the space shuttle. Why does the astronaut see the tool hit the shuttle but not hear it? A. Light waves cannot travel through a vacuum. However, sound waves can. B. Sound waves cannot travel through a vacuum. However, light waves can. C. Neither sound nor light waves can travel through a vacuum. D. Both sound and light waves can travel through a vacuum.