Worksheets8th Sci Final Exam Review
Total questions: 52
Worksheet time: 50mins
Name
Class
Date
1.
If an object is stationary (not moving) the forces acting upon it are _____________
a)
unbalanced
b)
weak
c)
balanced
d)
Hulk Smash!
2.
A push or pull that causes a change in motion
a)
Friction
b)
Gravity
c)
Force
d)
Mass
3.
Changes in our speed, direction or both are called _________.
a)
gravity
b)
changes
c)
acceleration
d)
deceleration
4.
If these boys are pulling with the same amount of force. What will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
5.
If there are two forces going in the same direction how would you find the net force?
a)
Subtract
b)
Add
c)
Neither
d)
Multiply
6.
Find the net force: 15 N to the right, and another 15 newtons to the right.
a)
0 N Right
b)
0 N Left
c)
30 N Left
d)
30 N Right
7.
With unbalanced forces, the object will move in the direction of the _______ force.
a)
larger
b)
smaller
c)
equal
8.
What is the net force?
a)
17 N Right
b)
3 N Right
c)
3 N Left
d)
17 N Left
9.
What is the standard unit force is measured in?
a)
N
b)
lbs
c)
g
d)
m/s
10.
How do you calculate Net Force if the forces are going different directions?
a)
add them together
b)
you don't
c)
using pi
d)
subtract them
11.
What is an example of an unbalanced force?
a)
a baby sitting in the road
b)
Me falling off a cliff
c)
a person sitting in a chair
d)
a book sitting on a shelf
12.
What is velocity?
a)
the quickness of an object
b)
the location of an object
c)
acceleration
d)
speed in a specific direction
13.
According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will
a)
remain in motion.
b)
eventually come to a stop.
c)
change its momentum.
d)
accelerate.
14.
Acceleration is caused by a force acting on a mass.
a)
Newton’s first law of motion
b)
Newton’s second law of motion
c)
Newton’s third law of motion
15.
Forces always act in equal and opposite pairs.
a)
Newton's 1st Law
b)
Newton's 3rd Law
c)
Newton's second law
16.
Forces always act in equal and opposite pairs.
a)
Newton's 1st Law
b)
Newton's 3rd Law
c)
Newton's second law
17.
Newton's 1st law is often called the _______.
a)
Newton's 2nd law
b)
action-reaction law
c)
law of equality
d)
law of inertia
18.
Unit of mass
a)
m/s 2
b)
m/s
c)
newtons
d)
kg
19.
A 20 kg bike accelerates at 10 m/s2. what was the force
a)
25
b)
200 N
c)
20 N
d)
10 N
20.
What can a force do?
a)
all of the above
b)
start a motion
c)
stop a motion
d)
change the direction of the motion
21.
What is the acceleration of a 50 kg object pushed with a force of 500 newtons? To solve this problem you must do -
a)
500 ÷ 50
b)
50 ÷ 500
c)
500 x 50
22.
What is the acceleration of a 50 kg object pushed with a force of 500 newtons? The answer to this question is most likely (HINT: Look at the units!!!) -
a)
10 N
b)
10 m/s2
c)
10 kg
23.
The mass of a car is 1000 kg. How much force would be required to accelerate the car at a rate of 3 m/s2?
a)
1000 ÷ 3
b)
3 ÷ 1000
c)
1000 x 3
24.
A force of 250 N is applied to an object that accelerates at a rate of 5 m/s2. What is the mass of the object? To solve this problem you must do -
a)
250 ÷ 5
b)
5 ÷ 250
c)
250 x 5
25.
Energy due to motion is ____________ energy.
a)
Potential
b)
Energy
c)
Kinetic
d)
Friction
26.
The faster an object moves, the ________ kinetic energy it has.
a)
more
b)
less
c)
none of the above
d)
all of the above
27.
__________ is stored energy.
a)
Potential
b)
Kinetic
c)
None of the above
d)
All of the above
28.
Gravitational potential energy depends on the ________ and ________ of the object.
a)
Height and mass
b)
Friction and movement
c)
Mass and Movement
d)
Height and Friction
29.
What kind of energy is in a rock at the edge of a cliff?
a)
Potential
b)
Kinetic
30.
What kind of energy is in a moving skateboard?
a)
Potential
b)
Kinetic
31.
What kind of energy is in a stretched rubber band?
a)
Potential
b)
Kinetic
32.
Energy can not be created or destroyed, only converted from one form to another.
a)
true
b)
false
33.
At which point is potential energy greatest?
a)
W
b)
X
c)
Y
d)
Z
34.
At which point is kinetic energy greatest?
a)
W
b)
X
c)
Y
d)
Z
35.
When a pendulum swings, at which point is kinetic energy highest?
a)
1
b)
2
c)
3
d)
4
36.
When a pendulum swings, at which point is potential energy at its greatest?
a)
1
b)
2
c)
3
d)
4
37.
Energy is the ability to do _____________ or cause change.
a)
work
b)
rest
c)
experiments
d)
science
38.
Which point has the most potential energy?
a)
G
b)
f
c)
b
d)
a
39.
A flat sloping surface that connects lower and higher elevations. It makes raising objects easier.
a)
wedge
b)
screw
c)
lever
d)
inclined plane
40.
An inclined plane wrapped around a rod forms this simple machine
a)
lever
b)
pulley
c)
screw
d)
wedge
41.
A simple machine that consists a rigid bar that pivot about a fixed point
a)
lever
b)
pulley
c)
wheel and axle
d)
fulcrum
42.
An axe is an example of a
a)
pulley
b)
inclined plane
c)
screw
d)
wedge
43.
A device that has two or more simple machines working together
a)
fulcrum
b)
pulley
c)
compound (complex) machine
d)
motor
44.
Which is not a type of simple machine?
a)
spring
b)
screw
c)
pulley
d)
wedge
45.
What type of simple machine is this?
a)
wheel and axle
b)
gear
c)
lever
d)
inclined plane
46.
The fixed point on the lever is called
a)
load
b)
resistance
c)
bar
d)
fulcrum
47.
The device used to raise a flag up a flag pole is an example of a
a)
wheel and axle
b)
lever
c)
inclined plane
d)
pulley
48.
Which of the following does a simple machine do?
a)
allows the users to apply less force over a longer distance
b)
reduce the amount of force needed to do work
c)
change the direction of the applied force
d)
all of the above
49.
What force caused your cart to slow down?
a)
friction
b)
applying force
c)
gravity
d)
gravity and friction
50.
Where does the most potential energy exist on a roller coaster?
a)
The top of the coaster
b)
The bottom of the coaster
c)
The middle of the coaster
d)
It is the same anywhere on the coaster
51.
The combination of all the forces acting on an object is an example of:
a)
Acceleration
b)
Gravity
c)
Net Force
d)
Mass
52.
If a drop is steeper, the roller coaster will go...
a)
Faster
b)
Crash
c)
Slower
d)
Stop
100 %
