Motion Review

1. Motion Review Physical Science

2. 1. True or False… • Motion is measured relative to a reference point.

3. TRUE • Motion is measured relative to a reference point.

4. 2. True or False… • Average speed is the rate at which an object is moving at a given instant.

5. False • Instantaneous speed is the rate at which an object is moving at a given instant.

6. 3. True or False… • A meter is a place or object used for comparison to determine if something is in motion.

7. FALSE • A reference pointis a place or object used for comparison to determine if something is in motion.

8. 4. True or False… • If a toy car traveling at 10 cm/s passes a toy car moving at 10 cm/s in the opposite direction, both cars have the same velocity.

9. FALSE • If a toy car traveling at 10 cm/s passes a toy car moving at 10 cm/s in the opposite direction, both cars have the same speed.

10. 5. True or False… • A straight diagonal line on a distance vs. time graph indicates constant speed.

11. TRUE • A straight diagonal line on a distance vs. timegraph indicates constant speed.

12. 6. True or False… • A horizontal line on a distance vs. time graph means that the object is at rest.

13. TRUE • A horizontal line on a distance vs. time graph means that the object is at rest.

14. 7. True or False… • A child riding on a merry-go-round is accelerating because his direction is changing.

15. TRUE • A child riding on a merry-go-round is accelerating because his direction is changing.

16. 8. True or False… • The SI unit of velocity is the meter per second per second.

17. FALSE • The SI unit of accelerationis the meter per second per second.

18. 9.True or False… • A straight line on a graph of speed vs. time means that the object has a constant acceleration.

19. TRUE • A straight line on a graph of speed vs. time means that the object has a constant acceleration.

20. 10. True or False… • The steepness of a line graph is referred to as the run.

21. FALSE • The steepness of a line graph is referred to as the slope.

22. 11. • A reference point is assumed to be _______, or not moving.

23. 11. • A reference point is assumed to be __stationary_____,or not moving.

24. 12. • A change in an object’s position relative to a reference point is called _______________.

25. 12. • A change in an object’s position relative to a reference point is called ____motion___________.

26. 13. • When riding a bicycle past a building, you are not moving relative to the ____________.

27. 13. • When riding a bicycle past a building, you are not moving relative to the ___bicycle_________.

28. 14. • Suppose you are sitting in a car at a red light when a car moving toward the north begins to pass you. If you use the passing car as a reference point, the direction in which you appear to be moving is toward the _____________.

29. 14. • Suppose you are sitting in a car at a red light when a car moving toward the north begins to pass you. If you use the passing car as a reference point, the direction in which you appear to be moving is toward the south.

30. 15. • The distance traveled by a moving object per unit of time is called ____________________.

31. 15. • The distance traveled by a moving object per unit of time is called ______speed_____.

32. 16. • The basic SI unit of length is the _________________.

33. 16. • The basic SI unit of length is the meter.

34. 17. • Speed that does not change is referred to as ____________ speed.

35. 17. • Speed that does not change is referred to as constant speed.

36. 18. • The statement that the motion of a hurricane is 20 km per hour in an easterly direction is a description of the hurricane’s _______________.

37. 18. • The statement that the motion of a hurricane is 20 km per hour in an easterly direction is a description of the hurricane’s velocity.

38. 19. • A speed of 15 km per hour is abbreviated as 15 _____

39. 19. • A speed of 15 km per hour is abbreviated as 15 km/h.

40. 20. • Acceleration is the rate of change in _______________.

41. 20. • Acceleration is the rate of change in velocity.