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Transcript
```Name____________________________
Date___________________
#___
Science Test ~ Forces and Motion
Chapter 3, Lessons 1 & 2
Part I: Vocabulary
____ 1.
motion
A.
a change in the position of an object
____ 2.
reference point
B.
the force that pulls all objects toward each other
____ 3.
force
C.
the rate at which an object changes position
____ 4.
gravity
D.
any push or pull
____ 5.
speed
E.
a place or object used to determine if an object is in
motion
____ 6.
velocity
F.
the speed and direction an object is moving
Part II: True/False
Tell if each statement is true or false. Explain your choice.
7.
A force can make a moving object stop.
This statement is ________ because __________________________________________.
8.
If you pedal your bike with the same force, your speed will increase.
This statement is ________ because __________________________________________.
9.
An object is accelerating only if it is speeding up.
This statement is ________ because __________________________________________.
Part III: Multiple Choice
____ 10.
A teacher walks by a student’s desk. The desk was in front of the teacher and is now
behind the teacher. What term describes the change in the teacher’s position compared
to the desk?
a.
velocity
b.
relative motion
c.
relative position
d.
frame of reference
____ 11.
Which object requires the least amount of force to move it 5 meters?
a. ping pong ball
b. soccer ball
c. baseball
d.
bowling ball
____ 12.
Two students push boxes with the same mass for 10 seconds. Which student has moved
her box a greater distance? The student who_________________.
a.
pushed with less force
b.
c.
pushed with more force
d.
____ 13.
On which object would the force of gravity be the strongest?
b. an apple
c. a book
____ 14.
Gravity is a force that makes objects __________________.
a. push apart
b. stop moving
c. move uphill
d. pull toward each other
d.
a truck
____ 15.
A student wants to describe the velocity of a moving car. What information does the
student need?
a.
speed and position
b.
speed and direction
c.
direction and position
d.
direction and relative motion
____ 16.
A train goes around the corner at the same speed it was traveling on a straight track.
What is this an example of?
a.
speed
b.
acceleration
c.
relative motion
d.
frame of reference
____ 17.
Which of the following is NOT an example of acceleration?
a.
A train slowing down to stop.
b.
A train moving at the same speed around a corner.
c.
A train increasing its speed.
d.
A train moving at the same speed in the same direction.
____ 18.
A car travels 100 miles in 2 hours. What is the car’s average speed?
a. 200 mi/hr
b. 100 mi/hr
c. 50 mi/hr
d. 102 mi/hr
Answer the following question in a complete, turn around sentence.
19.
Describe what happens to the motion of a baseball after a pitcher throws it and the batter
hits it. (2 points)
_________________________________________________________________________________________
_________________________________________________________________________________________
20.
You are moving heavy boxes across a room. You ask a friend to help you lift it. Why is it easier
when your friend helps? (2 points)
_________________________________________________________________________________________
_________________________________________________________________________________________
21.
Explain how the use of the brakes changes the motion of the bicycle. How does the mass of
the bicycle affect the force that needs to be applied to the brakes? (3 points)
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
22.
Is a roller coaster’s velocity likely to stay the same during the entire ride? Why or why not?
(2 points)
_________________________________________________________________________________________
_________________________________________________________________________________________
```
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