Physical Science Chapter 3 Exam
Modified True/False
Indicate whether the statement is true or false. If false, change the identified word or phrase to make the statement true.
____ 1. Displacement includes both distance and direction. _________________________
____ 2. Motion occurs when there is a change in speed. _________________________
____ 3. If you were trying to get out of the way of a storm, you would need to know the speed at which it was moving. _________________________
____ 4. The total distance traveled divided by the constant speed is the average speed. _________________________
____ 5. The relationship s = d/t can be used to calculate speed, distance or time. _________________________
____ 6. Acceleration occurs when velocity changes. _________________________
____ 7. If you roll a ball up a hill, it undergoes positive acceleration. _________________________
____ 8. When you push on a sled and it begins to go downhill, you cause negative acceleration. _________________________
____ 9. Acceleration is calculated by dividing change in speed by total time. _________________________
____ 10. When the forces acting on an object are unbalanced, the net force is zero. _________________________
____ 11. An object in motion at a constant velocity will change its motion only if a balanced force acts on it. _________________________
____ 12. In a car crash, inertia could cause you to crash into the windshield. _________________________
Multiple Choice
Identify the choice that best completes the statement or answers the question.
____ 13. If you ride your bicycle down a straight road for 500 m then turn around and ride back, your distance is ____ your displacement.
a. | greater than | c. | less than |
b. | equal to | d. | can’t determine |
____ 14. Motion is a change in ____.
a. | time | c. | velocity |
b. | speed | d. | position |
____ 15. The speed you read on a speedometer is ____.
a. | instantaneous speed | c. | average speed |
b. | constant speed | d. | velocity |
____ 16. 3 m/s north is an example of a(n) ____.
a. | speed | c. | position |
b. | velocity | d. | acceleration |
____ 17. The relationship among speed, distance, and time is ____.
a. | t = s/d | c. | s = dt |
b. | d = t/s | d. | s = d/t |
____ 18. A single point on a distance-time graph tells the ____.
a. | instantaneous speed | c. | constant speed |
b. | average speed | d. | average velocity |
____ 19. A merry-go-round horse moves at a constant speed but at a changing ____.
a. | velocity | c. | inertia |
b. | balanced force | d. | unbalanced force |
____ 20. Acceleration is rate of change of ____.
a. | position | c. | velocity |
b. | time | d. | force |
____ 21. If you ride your bike up a hill, then ride down the other side, your acceleration is ____.
a. | all positive | c. | first positive, then negative |
b. | all negative | d. | first negative, then positive |
____ 22. The equation used to find acceleration is a = ____.
a. | vf – vi/t | c. | vi – vf /t |
b. | v/t | d. | vi + vf/t |
____ 23. A horizontal line on a velocity/time graph shows ____ acceleration.
a. | positive | c. | changing |
b. | negative | d. | zero |
____ 24. Inertia varies depending on ____.
a. | force | c. | velocity |
b. | mass | d. | motion |
____ 25. Newton's first law of motion is also called the law of ____.
a. | mass | c. | force |
b. | inertia | d. | constant velocity |
Completion
Complete each statement.
26. ____________________ is a measure of how far an object has moved.
27. The speed and direction with which an object moves is its ____________________.
28. The distance an object travels per unit of time is ____________________.
29. The slope of the distance-time graph gives the ____________________.
30. Acceleration occurs when an object changes its ____________________ or ____________________ or both.
31. An object changing its speed from 10 m/s to 3 m/s is undergoing ____________________ acceleration.
32. As a car slows down approaching a red traffic light, its ____________________ is negative.
33. When calculating acceleration, to find the change in velocity, you subtract the ____________________ velocity from the ____________________ velocity.
34. If the forces acting on an object at rest are ____________________, the object will remain at rest.
35. At the same speed, a bowling ball is harder to stop than a soccer ball because the bowling ball has greater ____________________.
36. In the equation a = (Vf – Vi)/t, Vf stands for _________________________.
Physical Science Chapter 3 Exam
Answer Section
MODIFIED TRUE/FALSE
1. ANS: T PTS: 1 DIF: Webb's Depth of Knowledge I
OBJ: 1/1 STA: PS1.1 CS2.1
2. ANS: F, position
PTS: 1 DIF: Webb's Depth of Knowledge I OBJ: 1/1
STA: PS1.2 CS2.1
3. ANS: F, velocity
PTS: 1 DIF: Webb's Depth of Knowledge I OBJ: 2/1
STA: PS1.2 CS2.1
4. ANS: F, total travel time
PTS: 1 DIF: Webb's Depth of Knowledge I OBJ: 2/1
STA: PS1.1 CS1.1
5. ANS: T PTS: 1 DIF: Webb's Depth of Knowledge I
OBJ: 2/1 STA: PS1.1 CS2.1
6. ANS: T PTS: 1 DIF: Webb's Depth of Knowledge I
OBJ: 4/2 STA: PS1.1 CS2.1
7. ANS: F, negative
PTS: 1 DIF: Webb's Depth of Knowledge I OBJ: 5/2
STA: PS1.1 CS2.1
8. ANS: F, positive
PTS: 1 DIF: Webb's Depth of Knowledge I OBJ: 5/2
STA: PS1.1 CS2.1
9. ANS: F, velocity
PTS: 1 DIF: Webb's Depth of Knowledge I OBJ: 6/2
STA: PS1.1 CS2.1
10. ANS: F, balanced
PTS: 1 DIF: Webb's Depth of Knowledge I OBJ: 8/3
STA: PS1.1 CS2.1
11. ANS: F, an unbalanced
PTS: 1 DIF: Webb's Depth of Knowledge I OBJ: 7/3
STA: PS1.1 CS2.1
12. ANS: T PTS: 1 DIF: Webb's Depth of Knowledge I
OBJ: 9/3 STA: PS1.1 CS2.1
MULTIPLE CHOICE
13. ANS: A PTS: 1 DIF: Webb's Depth of Knowledge I
OBJ: 1/1 STA: PS1.1 CS2.1
14. ANS: D PTS: 1 DIF: Webb's Depth of Knowledge I
OBJ: 1/1 STA: PS1.1 CS2.1
15. ANS: A PTS: 1 DIF: Webb's Depth of Knowledge I
OBJ: 2/1 STA: PS1.1 CS2.1
16. ANS: B PTS: 1 DIF: Webb's Depth of Knowledge I
OBJ: 2/1 STA: PS1.1 CS2.1
17. ANS: D PTS: 1 DIF: Webb's Depth of Knowledge I
OBJ: 2/1 STA: PS1.1 CS2.1
18. ANS: A PTS: 1 DIF: Webb's Depth of Knowledge I
OBJ: 3/1 STA: PS1.1 CS2.1
19. ANS: A PTS: 1 DIF: Webb's Depth of Knowledge I
OBJ: 2/1 STA: PS1.1 CS2.1
20. ANS: C PTS: 1 DIF: Webb's Depth of Knowledge I
OBJ: 4/2 STA: PS1.1 CS2.1
21. ANS: D PTS: 1 DIF: Webb's Depth of Knowledge I
OBJ: 5/2 STA: PS1.1 CS2.1
22. ANS: A PTS: 1 DIF: Webb's Depth of Knowledge II
OBJ: 6/2 STA: PS4.3 CS2.1
23. ANS: D PTS: 1 DIF: Webb's Depth of Knowledge I
OBJ: 6/2 STA: PS1.1 CS2.1
24. ANS: B PTS: 1 DIF: Webb's Depth of Knowledge I
OBJ: 8/3 STA: PS1.1 CS2.1
25. ANS: B PTS: 1 DIF: Webb's Depth of Knowledge I
OBJ: 8/3 STA: PS1.1 CS2.1
COMPLETION
26. ANS: Distance
PTS: 1 DIF: Webb's Depth of Knowledge I OBJ: 1/1
STA: PS1.1 CS2.1
27. ANS: velocity
PTS: 1 DIF: Webb's Depth of Knowledge I OBJ: 2/1
STA: PS1.1 CS2.1
28. ANS: speed
PTS: 1 DIF: Webb's Depth of Knowledge I OBJ: 2/1
STA: PS1.1 CS2.1
29. ANS: speed
PTS: 1 DIF: Webb's Depth of Knowledge I OBJ: 3/1
STA: PS1.1 CS2.1
30. ANS: speed, direction
PTS: 1 DIF: Webb's Depth of Knowledge I OBJ: 4/2
STA: PS1.1 CS2.1
31. ANS: negative
PTS: 1 DIF: Webb's Depth of Knowledge II OBJ: 6/2
STA: PS1.1 CS2.1
32. ANS: acceleration
PTS: 1 DIF: Webb's Depth of Knowledge I OBJ: 5/2
STA: PS1.1 CS2.1
33. ANS: initial, final
PTS: 1 DIF: Webb's Depth of Knowledge II OBJ: 6/2
STA: PS1.1 CS2.1
34. ANS: balanced
PTS: 1 DIF: Webb's Depth of Knowledge I OBJ: 8/3
STA: PS1.1 CS2.1
35. ANS:
inertia
mass
PTS: 1 DIF: Webb's Depth of Knowledge II OBJ: 8/3
STA: PS1.1 CS2.1
36. ANS: final velocity
PTS: 1 DIF: Webb's Depth of Knowledge I OBJ: 2/1
STA: PS1.1 CS2.1