Forces, Motion, and Simple Machines Test

Name/#: ______Date: ______

Multiple Choice: Circle the best answer.

1. Ben wants to open the lid on a paint can with the least amount of effort as possible. Which object should Ben use as a lever? a. Doorknob b. Flathead Screwdriver c. Wheelchair ramp

2. What is the force that keeps a book falling after it is released? a. Friction b. Gravity c. Speed

3. A V-shaped simple machine made up of two inclined planes is a a. Lever b. Pulley c. Wedge

4. The GREATEST force is needed to move a box that weighs a. 25 kilograms b. 55 kilograms c. 75 kilograms

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.

6. Which requires the GREATEST amount of force to move? a. A bicycle b. A train c. A car

7. A construction worker 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. Use the table below to answer question 8.

Distance Time Car 1 150 kilometers 2 hours Car 2 150 kilometers 3 hours

8. Which BEST describes the data in the table? a. Car 1 travels at 75 kilometers per hour. b. Car 2 travels at 75 kilometers per hour. c. Car 1 travels at 50 kilometers per hour.

9. Lydia 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. The bowling ball will move faster and farther. c. The tennis ball will move faster and farther.

10. Which is NOT an example of the effect of gravity? a. The moon orbiting around the Earth. b. A ball changing direction when it is hit. c. A basketball falling through a hoop.

11. An inclined plane makes it easier to move an object by changing a. The direction of the force. b. The distance over which the object moves. c. A downward force to an outward force.

12. Which simple machine changes a weak circular force to a strong downward force? a. A pulley b. A screw c. An inclined plane

13. 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.

14. 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. 15. A car traveled 120 km in 2 hours. Using this data, you can calculate the car’s a. Speed b. Velocity c. Position

16. Where can the force of Earth’s gravity be felt? a. Only on Earth’s surface. b. Only in outer space. c. Anywhere on or near Earth.

17. What simple machine is part of both a screw and a wedge? a. An inclined plane b. A pulley c. A lever

18. Raising or lowering an elevator is a job for a(n) a. Wedge b. Pulley c. Lever

19. Curmondre is pushing a toy box across a carpeted floor. What would make the box move more quickly? a. Replacing the carpet with a smooth tile floor. b. Adding wheels to the bottom of the box. c. Both A and B.

20.Apply a force to an object, and you could change its a. Speed only. b. Direction only. c. Both its speed and its direction.

True/False: Circle the word True or False.

True False 21. Friction exists between all touching surfaces.

True False 22. There is more friction between smooth surfaces than rough surfaces.

True False 23. Motion is an object’s location or place.

True False 24. The Earth has a stronger pull of gravity than the Sun. True False 25. The Earth is always in motion.

Matching: Match the example on the left to the simple machine on the right. Answer choices CAN be used more than once.

______26. a flag pole

______27. a knife a. inclined plane b. wedge ______28. a ramp c. screw d. lever ______29. lid on a water bottle e. wheel and axle f. pulley ______30. the tip of a nail

______31. a see saw

______32. window blinds

______33. sink faucet

______34. slide

______35. doorknob

**BONUS** 1. Which of the following is a transparent material? a. A glass window b. Aluminum foil c. Brick wall

2. How are sounds produced? a. By radios b. By vibrations c. By your teacher