NEW
Font size
S
M
L
XL
WorksheetsSimple Machines Review
Total questions: 78
Worksheet time: 3hrs 34mins
Name
Class
Date
1.
Identify this simple machine
a)
Lever
b)
Wheel & Axle
c)
Inclined Plane
d)
Screw
2.
Two examples of a pulley...
a)
knife & axe blade
b)
lightbulb & screw
c)
flagpole hoist & window blinds
d)
catapult & teeter totter
3.
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
4.
Which is an example of someone using a simple machine to do work?
a)
a boy runs across a football field
b)
a banker counts money
c)
a mother pushes a stroller up a ramp
d)
a girl eats a sandwich
5.
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
6.
What do you call a machine made up of two or more simple machines?
a)
complicated machine
b)
compound or complex machine
c)
comprehensive machine
d)
constructive machine
7.
An inclined plane wrapped around a rod forms this simple machine
a)
lever
b)
pulley
c)
screw
d)
wedge
8.
A simple machine that consists a rigid bar that pivot about a fixed point
a)
lever
b)
pulley
c)
wheel and axle
d)
fulcrum
9.
An axe is an example of a
a)
pulley
b)
inclined plane
c)
screw
d)
wedge
10.
A seesaw is an example of a
a)
wedge
b)
lever
c)
inclined plane
d)
pulley
11.
A device that has two or more simple machines working together
a)
fulcrum
b)
pulley
c)
compound (complex) machine
d)
motor
12.
Stairs
a)
wedge
b)
pulley
c)
inclined plane
d)
wheel and axle
13.
Lightbulb
a)
wedge
b)
pulley
c)
incline plane
d)
screw
14.
Which is not a type of simple machine?
a)
spring
b)
screw
c)
pulley
d)
wedge
15.
What type of simple machine is found on the cap of a pickle jar?
a)
lever
b)
inclined plane
c)
pulley
d)
screw
16.
This device
a)
wedge
b)
lever
c)
incline plane
d)
wheel and axle
17.
What type of simple machine is this?
a)
wheel and axle
b)
gear
c)
lever
d)
inclined plane
18.
The fixed point on the lever is called
a)
load
b)
resistance
c)
bar
d)
fulcrum
19.
The transfer of energy that occurs when a force makes an object move is known as
a)
effort
b)
potential
c)
kinetic
d)
work
20.
A flat sloping surface that connects lower and higher elevations. It makes raising objects easier.
a)
wedge
b)
screw
c)
lever
d)
inclined plane
21.
What is an example of an inclined plane?
a)
crane
b)
slide
c)
bike
d)
see-saw
22.
What is an example of a wheel and axle?
a)
ax
b)
light bulb
c)
skateboard ramp
d)
bus tire
23.
What is a screw?
a)
means attracted to a magnet
b)
an inclined plane that is wrapped around an axle
c)
stiff bar that rests on a fulcrum
d)
made of 2 inclined planes that are back to back
24.
What makes a bike stop rolling?
a)
unbalanced forces
b)
your mom
c)
Friction
d)
effort force
25.
Which one is an effort force?
a)
blocks in a wagon
b)
person pushing a carriage
c)
friction
d)
Mrs. Herman
26.
Which one is a resistance force?
a)
me pulling the leash
b)
you pushing a rock
c)
me pushing your desk
d)
weight of a car you are pushing
27.
How does a pulley make work easier?
a)
It changes the direction of the input force.
b)
It changes the distance over which the input force is applied.
c)
It changes the amount of the input force applied
d)
It changes direction and increases the effect of your input force
28.
What reduces the efficacy of a simple machine?
a)
Heat
b)
Friction
c)
Mechanical Advantage
d)
Input Force
29.
If I lift a 500N object 2m off the ground, am I doing work?
a)
Yes
b)
No
30.
Name this simple machine.
a)
Lever
b)
Wedge
c)
Pulley
d)
Inclined Plane
31.
Name this simple machine.
a)
Pulley
b)
Wheel and Axle
c)
Inclined Plane
d)
Lever
32.
Name this simple machine.
a)
Wheel and Axle
b)
Lever
c)
Pulley
d)
Wedge
33.
This device
a)
wedge
b)
lever
c)
incline plane
d)
wheel and axle
34.
Force is a _____ or _______
a)
simple complex
b)
push pull
c)
up down
d)
in out
35.
How much work is produced when 350 N is used to move a car 5 m?
a)
70 J
b)
1750 J
c)
355 J
d)
175 J
36.
What is the mechanical advantage of this pulley system?
a)
2
b)
3
c)
4
d)
5
37.
Using a lever, Joe is able to lift a 10,000 N car off of the ground with a force of 1000 N. What is the mechanical advantage of the lever?
a)
1
b)
10
c)
100
d)
1000
38.
How does a single fixed puled, like the one seen here, help you do work?
a)
changes the direction of the force
b)
increases the amount of applied force
c)
decreases the amount of applied force
d)
allows you to pull the rope a shorter distance
39.
If you use a crowbar to get the lid off of a bucket, what simple machine are you using?
a)
Inclined Plane
b)
Pulley
c)
Wheel and Axle
d)
Lever
40.
In which of these cases is work being done?
a)
A student sleeps
b)
A student pushes a locked door that does not move
c)
a student carries his chair into another room
d)
A student sits on the carpet
41.
The mechanical advantage of this inclined plane is.....
a)
2.4
b)
3.4
c)
4.4
42.
Work done = Force x _________
a)
a. distance
b)
b. acceleration
c)
c. velocity
d)
d. speed
43.
What is power
a)
time it takes to do work
b)
work
c)
machine
44.
What is mechanical advantage?
a)
The advantage a machine has over a bicycle
b)
A measure of how much a simple machine reduces work
c)
A measure of when is the best time to use a simple machine
d)
A measure of the force amplification achieved by using a tool
45.
Where should the fulcrum be placed in order for the student to use the least amount of effort possible?
a)
point A
b)
point B
c)
point C
d)
point D
46.
How can you decrease the effort force needed to push a weight to the top of the ramp?
a)
cover the surface with carpet
b)
increase the length of the ramp
c)
increase the height of the ramp
d)
decrease the length of the ramp
47.
What is the mechanical advantage of the LAST inclined plane in the picture?
a)
1
b)
2
c)
3
d)
4
48.
A fishing pole is an example of a compound machine. What simple machines are used to make up this compound machine?
a)
lever, wheel and axle, pulley
b)
wheel and axle, inclined plane, pulley
c)
wheel and axle, pulley, inclined plane
49.
Would it be easier to move a box of the same mass up a ramp that was long and gradual or short and steep?
a)
long and gradual
b)
short and steep
50.
If Alan is on the right and George is on the left of a box, what needs to happen to make the box move to the right?
a)
Alan needs to push the box with more force than George.
b)
George needs to push the box with more force than Alan.
c)
Alan and George need to push the box with equal amounts of force.
d)
Alan and George need to pull on the box with equal amounts of force.
51.
A machine is a device that____________.
a)
changes either the magnitude or direction of force
b)
always makes lifting objects require more effort
c)
changes only magnitude of the force
d)
Changes only direction of the force
52.
True or False: No machine is 100 % efficient.
a)
True
b)
False
53.
What is the equation for Actual Mechanical Advantage?
a)
input distance/output distance
b)
output force/input force
54.
What is the definition for mechanical advantage?
a)
the number of times a machine increases the input force
b)
the number of times a person can lift a weight
c)
how much work is done in a given amount of time
d)
the rate of doing work
55.
How much work is done in holding a 15 N sack of potatoes while waiting in line at the grocery store for 3 minutes?
a)
15 J
b)
45 J
c)
0 J
d)
5 J
56.
What is the equation for power?
a)
P = Work/time
b)
P = Force/time
c)
P = time/distance
d)
P = Work * time
57.
A person weighing 600 N gets on an elevator. The elevator lifts the person 6 m in 10 seconds. How much power was used?
a)
360 W
b)
60 W
c)
3600 W
d)
600 W
58.
800 Newtons of force moving a distance of 20 meters will be how much work done?
a)
40 J
b)
1,600 J
c)
400 J
d)
16,000 J
59.
What is the unit of measurement for Power?
a)
Joules
b)
Newtons
c)
Watts
d)
Meters
60.
45,000 Joules of work done in 90 seconds results in how much power?
a)
50 watts
b)
500 watts
c)
5000 watts
d)
4,050,000 watts
61.
If you push a coffee mug 1.4 m using a force of 5 N, the work done on the mug is?
a)
7 J
b)
6 J
c)
8 J
d)
9 J
62.
How far does a car that weighs 5,000 N go if 18,000 J of work is done on it?
a)
3.8 m
b)
3.7 m
c)
3.2 m
d)
3.6 m
63.
What is power?
a)
transfer a force through a distance
b)
the rate of speed
c)
the rate of work being done
d)
transfer of space over time
64.
A Mustang has more horsepower than your mom's minivan. What does this mean?
a)
The Mustang has a higher topspeed.
b)
The minivan has a worse gas mileage.
c)
The Mustang can do work faster.
d)
The Mustang will die.
65.
The unit used to measure work is the
a)
Watt
b)
Newton
c)
Joule
d)
meter
66.
Any device that makes work easier is called a ______________________.
a)
Joule
b)
prop
c)
lever
d)
machine
67.
The efficiency of a machine can be increased by reducing __________________________.
a)
effort
b)
resistance friction
c)
fulcrum
d)
friction
68.
Which of the following is the best example of work being done.
a)
doing homework
b)
lifting a box
c)
pushing a stationary box
d)
holding a box
69.
The amount of work done in a certain amount of time is known as
a)
work
b)
effort force
c)
resistance force
d)
power
70.
Work is done on an object when the object moves in the SAME direction in which the force is applied.
a)
True
b)
False
71.
No machine in existence has 100% efficiency due to ____________________.
a)
magic
b)
friction
c)
smoke
d)
input
72.
A 5000N block is lifted 10 m. How much work was done?
a)
50000 J
b)
5000 J
c)
500 J
d)
50 J
73.
How do u find the mechanical advantage of a machine?
a)
Divide output force by input force
b)
multiply both input and output forces
c)
add both input and output forces
d)
subtract both input and out put force
74.
What is the mechanical advantage for the inclined plane?
a)
5
b)
1/5
c)
45
d)
17
75.
What is the mechanical advantage for this lever?
a)
1
b)
2
c)
1/2
d)
8
76.
Name the class of lever.
a)
Class 1
b)
Class 2
c)
Class 3
d)
Class president
77.
An axle is 4 meters and the wheel is 8 meters. What is the mechanical advantage?
a)
2
b)
32
c)
.5
78.
Jeff is a landscaping contractor and lifts a rock weighing 600 pounds by wedging a board under the rock. Jeff weighs 150 pounds and puts all of his weight on the lever. How much mechanical advantage did the lever provide to Jeff in lifting the rock?
a)
0
b)
2
c)
4
d)
8
Reset
