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WorksheetsSimple Machines Review
Total questions: 56
Worksheet time: 2hrs 34mins
Name
Class
Date
1.
Flagpole
a)
wedge
b)
pulley
c)
incline plane
d)
wheel and axle
2.
Lightbulb
a)
wedge
b)
pulley
c)
incline plane
d)
screw
3.
Stairs
a)
wedge
b)
pulley
c)
inclined plane
d)
wheel and axle
4.
A _______ pulley is used to reduce the amount of effort force.
a)
movable
b)
fixed
c)
single
5.
A _____ pulley only changes the direction of the force.
a)
movable
b)
fixed
c)
alternate
6.
A sloping force, like a ramp, that reduces the mount of force required to lift an object.
a)
screw
b)
wheel and axle
c)
inclined plane
7.
How can an incline plane reduce the amount of force required to lift an object?
a)
increase the length of the ramp
b)
increase the height of the ramp
c)
decrease the length of the ramp
8.
Pedals, handle bars and handbrakes on a bicycle
a)
wedges
b)
pulleys
c)
incline planes
d)
levers
9.
This device
a)
wedge
b)
lever
c)
incline plane
d)
wheel and axle
10.
This device
a)
wedge
b)
lever
c)
incline plane
d)
wheel and axle
11.
How could I reduce the effort force needed to lift the load?
a)
move the fulcrum away from the load
b)
move the fulcrum closer to the load
c)
place the fulcrum in the middle
12.
How much work is done if I use 5 Newtons to move an object 2 meters?
a)
10 Newtons
b)
10 meters
c)
10 Joules
d)
7 Joules
13.
What force opposes motion motion and decreases the efficiency of a machine?
a)
gravity
b)
friction
c)
pressure
14.
What type of simple machine is this?
a)
wheel and axle
b)
gear
c)
lever
d)
inclined plane
15.
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
16.
Consists of two or more simple machines.
a)
multiple machine
b)
compound machine
c)
duplex machine
17.
Which of the following is NOT an example of a compound machine?
a)
scissors
b)
fishing pole
c)
ramp
18.
A _____ is a fixed bar that us free to move around a fixed point known as a fulcrum.
a)
pulley
b)
inclined plane
c)
lever
19.
A lever is designed to:
a)
reduce the amount of force required to do work
b)
increase the amount of effort required
c)
increase the amount of energy needed to work
20.
A ______ is a grooved wheel with a rope running along the groove.
a)
lever
b)
pulley
c)
screw
21.
Consists of two circular objects; a central shaft (axle) and a wheel.
a)
wheel and axle
b)
screw
c)
pulley
22.
A simple machine that can split things apart or hold a door open.
a)
wedge
b)
screw
c)
lever
23.
A simple machine that is made up of an incline plane wrapped around a cylinder. It is often used to hold things together.
a)
lever
b)
screw
c)
wedge
24.
An inclined plane wrapped around a rod forms this simple machine
a)
lever
b)
pulley
c)
screw
d)
wedge
25.
A simple machine that consists a rigid bar that pivot about a fixed point
a)
lever
b)
pulley
c)
wheel and axle
d)
fulcrum
26.
An axe is an example of a
a)
pulley
b)
inclined plane
c)
screw
d)
wedge
27.
A seesaw is an example of a
a)
wedge
b)
lever
c)
inclined plane
d)
pulley
28.
What is an example of a lever?
a)
ramp
b)
car
c)
arm
d)
teeth
29.
What is an example of an inclined plane?
a)
crane
b)
slide
c)
bike
d)
see-saw
30.
What is an example of a wheel and axle?
a)
ax
b)
light bulb
c)
skateboard ramp
d)
bus tire
31.
What is an example of a wedge?
a)
door stop
b)
Your hair
c)
curtain
d)
wood screw
32.
What is an example of a pulley?
a)
slide
b)
flag pole
c)
ax
d)
chapstick
33.
What is the equation for work
a)
W = F x D
b)
F = M x A
c)
y = mx + b
d)
25 eevee eggs equals one evolution
34.
What is the equation for Mechanical Advantage?
a)
MA=input force*output force
b)
MA=input force/output force
c)
MA=output force/input force
d)
MA= output force - input force
35.
Which other simple machine is the inclined plane most SIMILAR to
a)
Lever
b)
Pulley
c)
Wedge
d)
Wheel and axel
36.
if a load of a lever is 100 newtons and the force you apply is 20 newtons, what is your mechanical advantage?
a)
120 newtons
b)
50 newtons
c)
2000 newtons
d)
80 newtons
37.
What is the Mechanical Advantage if you lift a load of 300 newtons and you only push down with 50 newtons?
a)
250
b)
60
c)
50
d)
6
38.
What is input force?
a)
3 times the output force
b)
a push or a pull
c)
80N
d)
the amount of force you exert on a machine
39.
How much work is produced when 350 N is used to move a car 5 m (W=Fd)?
a)
70 J
b)
1750 J
c)
355 J
d)
175 J
40.
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)
the number of times a machine increases input force
41.
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 (MA=Output Force/Input Force)?
a)
1
b)
10
c)
100
d)
1000
42.
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
43.
What is the equation for power?
a)
P = Work/time
b)
P = Force/time
c)
P = time/distance
d)
P = Work * time
44.
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
45.
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
46.
What is the unit of measurement for Power?
a)
Joules
b)
Newtons
c)
Watts
d)
Meters
47.
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
48.
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
49.
The unit used to measure work is the
a)
Watt
b)
Newton
c)
Joule
d)
meter
50.
What is the efficiency of the machine if the input is 263 J and the output is 142 J?
a)
6.26%
b)
54%
c)
100%
d)
260%
51.
What is the efficiency of the machine if the input is 263 J and the output is 142 J?
a)
6.26%
b)
54%
c)
100%
d)
260%
52.
if a load of a lever is 100 newtons and the force you apply is 20 newtons, what is your mechanical advantage?
a)
120 N
b)
5 N
c)
2000 N
d)
80 N
53.
What is the mechanical advantage if you lift a load of 300 newtons and you only push down with 50 newtons?
a)
250
b)
50
c)
60
d)
6
54.
A machine has a work output of 8 joules and requires 10 joules of work input to operate. What is the machine's efficiency?
a)
8 J
b)
10 J
c)
80%
d)
800%
55.
What is the efficiency of the machine if the input is 263 J and the output is 142 J?
a)
6.26%
b)
54%
c)
100%
d)
260%
56.
What is the efficiency of a machine that has work input of 40 joules and work output of 35 joules?
a)
87.50%
b)
1200
c)
1.142
d)
114%
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