1. CBA 2 Review

3. Which of the following steps would not allow the bulb to produce light? A. Switching the wires B. Flip the battery upside down C. Cutting one wire D. Replace the wires with foil

4. C. Cutting one wire It would create an incomplete (open) circuit.

5. Which of the following uses mechanical energy? A. D. C. B.

6. C. Because the toy will move and has moving parts.

7. What types of energy can be seen in the following picture?

8. Electricity Light Heat

9. Which tool could NOT be used to complete the circuit and make the bulb light up?

10. The milk carton because paper is a insulator and will not let the energy flow through

11. Which picture below shows an example of electrical energy transferring into light energy?

12. The TV uses electricity to turn on and once the TV is on it creates light that can be seen.

13. What force is the following picture an example of?

14. A Push The girl will push the ball with her foot.

15. What force is the following picture an example of?

16. A Pull The men are being pulled down to the ground.

17. A fork falls off a table. What causes the fork to hit the floor?

18. Gravity Gravity is a force that pulls objects down.

19. 400 g 200 g A. D. C. B. Which box will need the most force applied to it to make it move 1 meter? 300 g 100 g

20. 400 g D. Even though it is the smallest box, it has the most mass and will require the most force to move it. (Think bowling ball vs beach ball.)

21. What caused the car to travel differnet distances?

22. Friction The tile has the smoothest surface and will have less friction than a rough surface, so it will let the car travel the farthest.

23. What type of force would the pick below display?

24. A pull- the magnets would pull towards each other.

25. What is the drop of water doing to the light?

26. The water is REFRACTING the light

27. Which of the following lines in the diagram shows a refraction?

28. Line D- because the line changes as it goes through the material.

29. Based on the table which cup is the best insulator? CupABCD Beginning temperature 15˚C Temperature after 5 minutes 18˚C24˚C26˚C25˚C

30. Cup A- because it caused the LEAST amount of change in temperature.

31. Which piece of the picture below should be an insulator and which should be a conductor?

32. Insulators Conductor

33. Which of the following is a complete circuit?

34. The energy can make it to every part of the circuit.