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WorksheetsMachines
Total questions: 80
Worksheet time: 2hrs 47mins
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 an example of a pulley?
a)
slide
b)
flag pole
c)
ax
d)
chapstick
24.
What is an example of a screw?
a)
arm
b)
ax
c)
light bulb
d)
ramp
25.
What is a simple machine?
a)
stiff bar that rests on a fulcrum
b)
means attracted to a magnet
c)
an inclined plane that is wrapped around an axle
d)
a machine with few or no moving parts
26.
What does magnetic mean?
a)
means attracted to a magnet
b)
a machine with few or no moving parts
c)
stiff bar that rests on a fulcrum
d)
an inclined plane that is wrapped around an axle
27.
What is an inclined plane?
a)
wheels that turn on a post
b)
made from two or more simple machines
c)
flat surface that is higher at one end
d)
uses a wheel and a rope to lift a load
28.
What is a pulley?
a)
wheel that turns on a post
b)
uses a wheel and rope to lift a load
c)
made of two or more simple machines
d)
flat surface that is higher at one end
29.
What makes a bike stop rolling?
a)
unbalanced forces
b)
your mom
c)
Friction
d)
effort force
30.
Which one is an effort force?
a)
blocks in a wagon
b)
person pushing a carriage
c)
friction
d)
Mr. Sommer
31.
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
32.
What is an example of a lever?
a)
ramp
b)
car
c)
arm
d)
teeth
33.
What is an example of a wedge?
a)
door stop
b)
Your hair
c)
curtain
d)
wood screw
34.
A _______ pulley is used to reduce the amount of effort force.
a)
movable
b)
fixed
c)
single
35.
A _____ pulley only changes the direction of the force.
a)
movable
b)
fixed
c)
System
36.
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
37.
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
38.
Why is no machine 100% efficient?
a)
some of the input energy is converted to mechanical energy in the environment
b)
some of the input energy is converted to chemical energy in the environment
c)
some of the input energy is converted to heat energy in the environment
d)
All machines can be 100% efficient
39.
Pedals, handle bars and handbrakes on a bicycle
a)
wedges
b)
pulleys
c)
incline planes
d)
levers
40.
This device
a)
wedge
b)
lever
c)
incline plane
d)
wheel and axle
41.
This device
a)
wedge
b)
lever
c)
incline plane
d)
wheel and axle
42.
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
43.
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
44.
What force opposes motion motion and decreases the efficiency of a machine?
a)
gravity
b)
friction
c)
pressure
45.
What type of simple machine is this?
a)
wheel and axle
b)
gear
c)
lever
d)
inclined plane
46.
Screws and wedges are examples of what other type of simple machine?
a)
pulley
b)
inclined plane
c)
levers
d)
gears
47.
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
48.
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
49.
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
50.
Scissors are an example of a compound machine. What simple machines are used to make up this compound machine?
a)
2 levers and 2 inclined planes
b)
2 levers and 2 pulleys
c)
2 pulleys and 2 inclined planes
51.
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
52.
____ is done when a force is applied over a distance.
a)
energy
b)
work
c)
force
53.
A simple machine is a device that helps to reduce the amount of _____ required to work.
a)
force
b)
energy
c)
work
54.
What could I do to this machine to increase the efficiency?
a)
oil or grease it
b)
make it sharper
c)
make the ramp shorter
55.
What is the mechanical advantage of this pulley system?
a)
2
b)
3
c)
4
d)
5
56.
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
57.
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
58.
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
59.
The mechanical advantage of this inclined plane is.....
a)
2.4
b)
3.4
c)
4.4
60.
What is the mechanical advantage of the LAST inclined plane in the picture?
a)
1
b)
2
c)
3
d)
4
61.
Where is the fulcrum found in a 1st class lever
a)
The middle
b)
Between the input and output force
c)
On the left side of the lever
d)
On the right side of the lever
62.
Where is the fulcrum in a 2nd class lever
a)
In between the input and output
b)
On the left side
c)
On the right side
63.
Where is the fulcrum in a 3rd class lever
a)
On the left side
b)
In between the the input and output
c)
On the right side
64.
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
65.
True or False: No machine is 100 % efficient.
a)
True
b)
False
66.
What is the equation for efficiency?
a)
Work Output/Work Input
b)
Work Input / Work Output
c)
mass * Work
d)
Work Input * Work Output
67.
When a machine is used to perform a task, work output is always ____________________ than work input
a)
Greater
b)
Equal
c)
Less
68.
Machines make work
a)
easier
b)
harder
c)
stay the same
69.
The amount by which a machine multiplies an input force is called the ____.
a)
efficiency factor
b)
mechanical advantage
c)
resistance force
70.
Which of the following is NOT a way that a machine makes work easier to do?
a)
change the size of a force
b)
change direction of a force
c)
change the type of a force
d)
change distance a force acts
71.
Find the force needed to lift a 1000 N rock using a jack with a mechanical advantage of 10.
a)
1
b)
10
c)
100
d)
1000
72.
Unit for work
a)
Gram
b)
Joule
c)
Newton
d)
Watt
73.
Unit for distance
a)
Gram
b)
Joule
c)
meter
d)
Watt
74.
A dressmaker is cutting fabric. She applies 18 J of work to the scissors. The scissors apply 15 J of work to the fabric as it cuts. What is the efficiency of the scissors?
a)
83%
b)
0.83%
c)
33%
d)
0.33%
75.
A winding mountain road is an example of a(n) ____.
a)
lever
b)
wedge
c)
inclined plane
d)
wheel and axle
76.
A see-saw is a first-class lever. Mark sits 4 meters away from the fulcrum. The leaf that is 2 meter from the fulcrum on the other side goes up. What is the ideal mechanical advantage of the see-saw as it lifts the leaf?
a)
0.5
b)
1
c)
1.5
d)
2
77.
What is the ideal mechanical advantage of a wedge that is 0.35 meters long and 0.05 meters high?
a)
0.30
b)
1
c)
5
d)
7
78.
What is the ideal mechanical advantage of the pulley shown?
a)
1
b)
2
c)
3
d)
4
79.
The wheel and axle on a wagon is a simple machine. The radius of the wheel is 0.24 meters. The radius of the axle is 0.03 meters. What is the ideal mechanical advantage of the wheel and axle?
a)
4
b)
6
c)
8
d)
10
80.
_____ the length and _____ the height of the inclined plane increases its ideal mechanical advantage.
a)
increasing, increasing
b)
decreasing, increasing
c)
increasing, decreasing
d)
decreasing, decreasing
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