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1. Forces Gravity Relative Location Friction Name that Step 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300 400 400 400 400 400 500 500 500 500 500

2. Name the force that pulls everything toward Earth.

3. Gravity

4. Which of these is a force?A. MarbleB. RampC. Magnetism

5. C. Magnetism

6. If you are going very fast on your bicycle and hit a high curb, what could happen?A. Your bike could move faster.B. You could fall forward over the handlebars.C. You could fall backward over the back tire.

7. B. You could fall forward over the handlebars.

8. Name four different forces.

9. Gravity, Push, Pull, Magnetism, Friction, Collision

10. What does the force of friction always do to a moving object?

11. Slow it down or stop it.

12. Gravity always ______ on objects.A. PushesB. FrictionC. Pulls

13. C. Pulls

14. True or False: Gravity is the force that keeps airplanes in the air.

15. False

16. If you drop a pebble and a basketball at the same time, from the same height, which will hit the ground first?

17. Neither. They will hit the ground at the same time.

18. How can a person slow down the force of gravity?

19. Provide air resistance (parachute)Provide friction (put stones on a hill)Use an engine (airplane)

20. How can you tell that gravity is pulling on a helium balloon, even though it floats?

21. Helium is lighter than air, so for a while it makes the balloon float. When the helium runs out, the balloon comes back down.Therefore, gravity is pulling on the balloon.

22. Location describes ________ an object is.A. WhereB. How heavyC. How big

23. A. Where

24. How can you tell an object has moved?

25. It is in a different location.

26. Describe the position of the car.

27. Behind the people.In the parking lot.Under the ceiling.On the floor.

28. Describe the position of the apples.

29. In the basket.Beside the bread.Behind the plate.To the left of the bread.

30. Describe the position of the giraffe.

31. In the boat.Between the lion and the alligator.To the left of the alligator.To the right of the lion.Under the sky.

32. Friction creates __________.A. MagnetismB. ForcesC. Heat

33. C. Heat

34. Which surface has more friction, a grassy field or a gym floor?

35. A grassy field.

36. If you want to reduce the amount of friction your feet have on the snow, what could you wear?

37. Shoes with smooth solesIce skatesSkisA snowboard

38. True or False: Air can create friction.

39. True. It is called air resistance.

40. You and a friend go down a slide. You are wearing snow pants and he is wearing sweat pants. Which one of you will reach the bottom first?

41. You will reach the bottom first. Your pants are smooth and his pants are soft (fluffy). His pants create more friction with the slide.

42. Jimmy thinks that the plastic slide makes people go slower than the metal slide.

43. Make a Hypothesis

44. Sarah writes 30 cm, 32 cm, and 31 cm on her paper.

45. Record the Data

46. Martin notices on his data table that the marble traveled the longest distance and the cotton ball traveled the shortest distance.

47. Analyze the Data

48. Jenna gathered two objects, a ramp, and a meter stick. She marked a starting line. She rolled the objects with the same amount of force on the same surface three times. She measured how far the objects traveled.

49. Conduct the Experiment

50. Derek decided that objects travel farther on a tile floor than on a rug. He now knows that the rug creates more friction than the tile.