# Ch11_Test - the Autistic Support Wiki Space! ```Name: ___________________
Chapter 11 Science Skills
Date: _________
Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
1.
A passenger in the rear seat of a moving car moving at a steady speed is at rest relative to
a. The side of the road
b. A pedestrian on the corner ahead
c. The front seat of the car
2.
Which distance can be most accurately measured with a ruler?
a. The length of a river
b. The width of a book
c. The distance between two cities
3.
One kilometer equals 1000 meter. What does the prefix Kilo mean?
a. 10
b. 100
c. 1000
4.
A person walks 1 mile everyday for exercise, leaving her front porch at 9:00 am and returning to her front
porch at 9:25am. What is the total displacement of her daily walk?
a. 1 mile
b. 0 miles
c. 25 minutes
5.
A ball is rolled uphill a distance of 3 meters before it slows, stops, and begins to roll back. The ball rolls
downhill 6 meters before coming to rest against a tree. What is the magnitude of the ball’s displacement?
a. 3 meters
b. 6 meters
c. 9 meters
6.
Objects in free fall near the surface of the Earth experience
a. Constant speed
b. Constant velocity
c. Constant acceleration
7.
Which example describes constant acceleration due only to a change in direction?
a. Increasing speed while traveling around a curve
b. An object at rest
c. Traveling around a circular track
(Continued)
Science Test
Page 1
Name: ___________________
Chapter 11 Science Skills
Date: _________
8.
Suppose you increase your walking speed from 1 m/s to 3 m/s in a period of 2 seconds. What is your
acceleration?
a. 1 m/s2
b. 2 m/s2
c. 4 m/s2
9.
The slope of a speed-time graph indicates
a. Direction
b. Acceleration
c. Velocity
10. An object that is accelerating may be
a. Slowing down
b. Gaining speed
c. Changing directions
d. All of the above
Matching
Use the following terms and match them with the correct answer. Please note that all answers will show up RED.
11. The motion of an object looks different to observers in different
Terms
___________________
Instantaneous acceleration
12. A car’s speedometer measures ___________________
13. The difference between speed and velocity is that velocity indicates the
Positive
___________________ of motion and speed does not.
Curved
14. Because its ___________________ is always changing, an object moving
Gravity
in a circular path experiences a constant change in velocity.
Speed or Velocity
15. The acceleration of a moving object is calculated by dividing the change in
Direction
___________________ by the time over which the change occurs.
16. Accelerated motion is represented by a(an) ___________________ line
Instantaneous Speed
on a distance-time graph.
Frames of Reference
17. A car that increases its speed from 20 km/h to 100km/h undergoes
Direction
___________________ acceleration.
18. ___________________ is how fast a velocity is changing at a specific
instant.
19. Freely falling objects accelerate at 9.8 m/s2 because of the force of ___________________ acts on them.
(Continued)
Science Test
Page 2
Name: ___________________
Chapter 11 Science Skills
Date: _________
Use the space provided to answer the following questions.
20. Distance is a measurement of length. What information does displacement give in addition to distance?
21. What types of changes in motion cause acceleration?
22. If you ride your bike at an average of 2 km/h and need to travel a total distance of 20 km, how long will it
Equation:
Average speed =
Total Distance
Total Time
23. Explain how velocity is different from speed.
(Continued)
Science Test
Page 3
Name: ___________________
Chapter 11 Science Skills
Date: _________
Average Speed: Find the average speed for the following items. You will need assistance to complete this portion
of the test. Ask for assistance when you are ready to complete this section.
Equation:
Average speed =
Total Distance
Total Time
Rolling chair
Distance
Time
Average Speed
Attempt 1
Attempt 2
Attempt 3
Attempt 4
Science Test
Page 4
```