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WorksheetsStaar 8th Science Force Motion and Energy
Total questions: 27
Worksheet time: 14mins
Name
Class
Date
1.
How fast an object moves is called....
a)
speed
b)
velocity
c)
direction
d)
force
2.
SPEED and a DIRECTION is called
a)
speed
b)
velocity
c)
direction
d)
force
3.
55 mph is an example of....
a)
speed
b)
velocity
c)
direction
d)
force
4.
55 mph north is an example of....
a)
speed
b)
velocity
c)
direction
d)
force
5.
Which of the following IS NOT acceleration?
a)
change in speed
b)
change in direction
c)
change in speed or direction
d)
change in mass
6.
How can you change the motion of an object?
a)
change the speed
b)
change the direction
c)
change speed and direction
d)
all of these
7.
What tool is used to measure FORCE?
a)
triple beam balance
b)
spring scale
c)
meter stick
d)
none of these
8.
Force is measured in _____________.
a)
centimeters
b)
grams
c)
newtons
d)
liters
9.
How do you know you have a BALANCED force?
a)
it's stationary or moving at a constant speed
b)
a force causes a change in position
c)
the speed increases
10.
How do you know you have a UNBALANCED force?
a)
it's stationary or moving at a constant speed
b)
a force causes a change in position
c)
the speed increases
11.
Which one can be still or in motion?
a)
balanced force
b)
unbalanced force
12.
Which one has one force that is greater than the other that causes motion?
a)
balanced
b)
unbalanced
13.
Which of Newton's Laws is being described?
An object at rest remains at rest unless acted upon by a force and an object in motion remains in motion unless acted on by a force
ex. a ball on the floor
An object at rest remains at rest unless acted upon by a force and an object in motion remains in motion unless acted on by a force
ex. a ball on the floor
a)
Law of Inertia / Newton's 1st Law
b)
Law of acceleration / Newton's 2nd Law
c)
Action - Reaction/ Newton's 3rd Law
14.
Which of Newton's Laws is being described?
a rocket lifting off the ground
a rocket lifting off the ground
a)
Law of Inertia / Newton's 1st Law
b)
Law of acceleration / Newton's 2nd Law
c)
Action - Reaction/ Newton's 3rd Law
15.
Which of Newton's Laws is being described?
The greater the mass the more inertia it has. F=ma
The greater the mass the more inertia it has. F=ma
a)
Law of Inertia / Newton's 1st Law
b)
Law of acceleration / Newton's 2nd Law
c)
Action - Reaction/ Newton's 3rd Law
16.
How do you calculate FORCE?
a)
mass x direction
b)
acceleration x direction
c)
acceleration x temperature
d)
mass x acceleration
17.
What happens to an object's acceleration as mass of the object increases?
a)
it increases as long as FORCE is the same
b)
it decreases as long as Force is the same
c)
it decreases as long as the TEMPERATURE is the same
d)
it increases as long as the TEMPERATURE is the same
18.
If an object is falling and accelerating downward, then the net force is not equal to the force pushing ________.
a)
down
b)
up
c)
sideways
19.
What is the formula for ACCELERATION?
a)
Force times Mass
b)
Speed x Mass
c)
Force divided by Mass
d)
Speed x Force
20.
Look at the picture. What is true about the photo?
a)
it is a balanced force
b)
it is an unbalanced force
21.
Look at both photos. Are the forces PUSHING or PULLING forces?
a)
pushing
b)
pulling
22.
The forces shown in the pictures are ...
(hint: look at the direction of the blue arrows)
(hint: look at the direction of the blue arrows)
a)
working together
b)
opposite forces
23.
In this picture, the forces
____________ balance each other.
____________ balance each other.
a)
do
b)
do not
24.
In this photo, the STRONGER force is pulling to the .....
a)
right
b)
left
25.
In this photo, the WEAKER force is pulling to the .....
a)
right
b)
left
26.
In this photo, the MOTION will be to the
a)
right
b)
left
27.
What is the net force in the picture?
a)
500 N
b)
450 N
c)
950 N
d)
50 N
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