Forces, Motion, and Simple Machines Test s1

Name/#: ______Date: ______Forces, Motion, and Simple Machines Test

Matching: Place the best answer on your answer sheet. Only the answers on your answer sheet will be graded.

1. Anthony wants to open the lid on a paint can with the least amount of effort as possible. Which object should Blake use as a lever? a. Doorknob b. Woodscrew c. Flathead Screwdriver d. Wheelchair ramp 2. What is the force that keeps a book falling after it is released? a. Friction b. Gravity c. Speed d. Velocity 3. A V-shaped simple machine made up of two inclined planes is a a. Lever b. Pulley c. Screw d. Wedge 4. The GREATEST force is needed to move a box that weighs a. 25 pounds b. 55 pounds c. 70 pounds d. 75 pounds 5. A simple machine makes it easier to do work on an object because it a. Decreases the force of gravity on an object. b. Decreases the force needed to move an object. c. Reduces the weight of the object that is moved. d. Uses many parts to increase force on an object. 6. Which requires the GREATEST amount of force to move? a. A bicycle b. A skateboard c. A train d. A car 7. Which is NOT an example of the effect of gravity? a. Rivers flowing downhill. b. The moon orbiting around the Earth. c. A ball changing direction when it is hit. d. A basketball falling through a hoop. 8. Amanda uses the same amount of force and time to push a tennis ball and a bowling bowl. Which BEST describes the motion and speed of the balls? a. They will move the same distance at the same speed. b. They will move the same distance at different speeds. c. The bowling ball will move faster and farther. d. The tennis ball will move faster and farther. 9. Kody adds wheels to a box to reduce______. a. The force of friction on the box. b. The force of gravity on the box. c. The weight of the bricks inside the box. d. The distance the box must be moved. 10. An inclined plane makes it easier to move an object by changing ______. a. A weak force to a strong force. b. The direction of the force. c. The distance over which the object moves. d. A downward force to an outward force. 11. Which simple machine changes a weak circular force to a strong downward force? a. A pulley b. A screw c. An inclined plane d. A wheel and axle 12. A pitcher throws a ball to a batter. The batter hits the ball with greater force than the pitcher used to throw the ball. The ball moves ______. a. In a new direction at a faster speed. b. In a new direction at a slower speed. c. In the same direction at a faster speed. d. In the same direction at a slower speed. 13. Imagine the Earth’s mass increased. What would happen to the force of Earth’s gravity? a. It would stay the same. b. It would become weaker. c. It would become stronger. d. It would become greater than the Sun’s gravity.

14. Where can the force of Earth’s gravity be felt? a. Only on Earth’s surface. b. Only in Earth’s atmosphere. c. Only in outer space. d. Anywhere on or near Earth. 15. What is a force? a. Push only b. Pull only c. Gravity only d. A push or a pull 16. Raising or lowering an elevator is a job for a (n) ______. a. Wedge b. Pulley c. Lever d. Inclined plane 17. Thomas is pushing a toy box across a carpeted floor. What would make the box move more quickly? a. Adding toys to the box. b. Replacing the carpet with a smooth tile floor. c. Adding wheels to the bottom of the box. d. Both B and C. 18. Apply a force to an object, and you could change its ______a. Speed only. b. Direction only. c. Both its speed and its direction. d. Mass.

Matching: Match the example on the left to the simple machine on the right. Answer choices CAN be used more than once. ______19. Flag Pole ______26. Sink Faucet

______20. Knife ______27. slide

______21. Ramp ______28. Door Stop

______23. Lid on a water bottle ______29. Doorknob

______24. The tip of a nail ______30. Ladder

______24. See Saw ______31. Wood Screw

______25. Window Blinds ______32. Wheel barrow

Fill in the blank: Write the name of each simple machine in the box next to the correct picture. Word Bank: Wedge, Pulley, Screw, Inclined Plane, Lever, Wheel and Axle Picture Name of the Simple Machine 33.

Short Answer: Answer the questions in complete sentences.

39. How do simple machines make work easier?

40. How are mass and weight different?