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WorksheetsWork & Simple Machines
Total questions: 53
Worksheet time: 2hrs 46mins
Name
Class
Date
1.
Machines make
a)
people do less work.
b)
people do more work.
c)
work easier to do.
d)
work harder to do.
2.
Because of __________, the work done by a machine is always less than the work done on the machine.
a)
work
b)
distance
c)
friction
d)
output
3.
What is the formula to calculate work?
a)
w = d/t
b)
w = f/d
c)
w = f x d
d)
w = d x t
4.
Bob pushed a box with a force of 100 N. He pushed it 20 m.
How much work did Bob do?
How much work did Bob do?
a)
5 J
b)
200 J
c)
2,000 J
d)
0 J
5.
Billie pushed her car to the nearest parking lot when it ran out of gas. She used 200 N of force and pushed the car for 50 m. How much work did she do?
a)
0 J
b)
4 J
c)
1,000 J
d)
10,000 J
6.
Bubba used 1,000 N of force to lift the barbell. He tried to lift it for 5 minutes. He could not move the weights. How much work did Bubba do on the weights?
a)
5,000 J
b)
200 J
c)
0 J
d)
Cannot be determined
7.
In order for work to be done, movement must be in the _________ as the applied force.
a)
opposite direction
b)
same direction
c)
opposite hemisphere
d)
same hemisphere
8.
A simple machine is a device that helps to reduce the amount of _____ required to work.
a)
force
b)
energy
c)
work
d)
people
9.
A _____ is a fixed bar that is free to move around a fixed point known as a fulcrum.
a)
pulley
b)
inclined plane
c)
lever
d)
screw
10.
A ______ is a grooved wheel with a rope running along the groove.
a)
lever
b)
pulley
c)
screw
d)
wheel and axle
11.
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
d)
gear
12.
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
d)
none of these work
13.
A simple machine that can split things apart or hold a door open.
a)
wedge
b)
screw
c)
lever
d)
pulley
14.
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
d)
inclined plane
15.
What type of simple machine gets the flag up the flagpole?
a)
wedge
b)
pulley
c)
incline plane
d)
wheel and axle
16.
What type of simple machine is at the base of a lightbulb?
a)
wedge
b)
pulley
c)
incline plane
d)
screw
17.
What type of simple machine are stairs?
a)
wedge
b)
pulley
c)
inclined plane
d)
wheel and axle
18.
Pedals, handlebars, and handbrakes on a bicycle are all...
a)
wedges
b)
pulleys
c)
incline planes
d)
levers
19.
This device is a...
a)
wedge
b)
lever
c)
incline plane
d)
wheel and axle
20.
How could Bob 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
d)
cry and hope it gets better all by itself
21.
What type of simple machine is this?
a)
wheel and axle
b)
gear
c)
lever
d)
inclined plane
22.
The cutting part of an ax is an example of a(n)
a)
pulley
b)
inclined plane
c)
screw
d)
wedge
23.
A seesaw is an example of a...
a)
wedge
b)
lever
c)
inclined plane
d)
pulley
24.
A device that has two or more simple machines working together is a...
a)
fulcrum
b)
pulley
c)
compound machine
d)
motor
25.
Which is not a type of simple machine?
a)
spring
b)
screw
c)
pulley
d)
wedge
26.
What type of simple machine is found on the cap of a pickle jar?
a)
lever
b)
inclined plane
c)
pulley
d)
screw
27.
A measure of how much of the work put into a machine is changed into useful output work by the machine is known as...
a)
efficiency
b)
effort force
c)
resistance force
d)
work
28.
The fixed point on the lever is called
a)
load
b)
resistance
c)
bar
d)
fulcrum
29.
A device that makes doing work easier.
a)
compound machine
b)
wedge
c)
machine
d)
pulley
30.
A machine consisting of two wheels of different sizes that rotate together is a
a)
wheel and axle
b)
compound machine
c)
block and tackle
d)
pulley
31.
A short, steep ramp needs __________ force in order to move an object.
a)
a lot of
b)
a little bit of
c)
no
d)
The Air
32.
In order to use the least amount of force to travel up a mountain, you should use a _______________.
a)
Short Steep trail
b)
A long winding trail
33.
A wheel with teeth is called a _______________.
a)
Wheel and axle
b)
Lever
c)
Pulley
d)
Gear
34.
True or False A simple machine reduces the amount of work that needs to be done.
a)
True
b)
False
35.
True or False. A pulley consists of a bar and a fulcrum.
a)
True
b)
False
36.
True or False. To reduce the force needed to move an object, you should make the ramp longer.
a)
True
b)
False
37.
To lift a heavy load, you should move the fulcrum ______________ the load.
a)
close to
b)
far from
c)
on top of
38.
What is a simple machine?
a)
a device that has only one working motor
b)
a device that makes work easier
c)
a device that makes more work for a job
d)
device that is made up of two or more machines
39.
The use of force to move an object is the definition for:
a)
energy
b)
work
c)
force
d)
strength
40.
What is the equation for calculating work?
a)
force times distance
b)
force divided by distance
c)
force plus distance
d)
mass times acceleration
41.
What are the units for work?
a)
Newtons
b)
Meters
c)
Force
d)
Joules
42.
The device used to raise a flag up a flagpole is an example of a
a)
wheel and axle
b)
lever
c)
inclined plane
d)
pulley
43.
Which of the following is NOT an example of a compound machine?
a)
scissors
b)
fishing pole
c)
ramp
d)
knife
44.
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
d)
reduce the amount of friction
45.
T Rex has a mouth full of _________________
a)
Inclined planes
b)
Screws
c)
Wedges
d)
Pulley
46.
A simple machine that can split things apart or hold a door open.
a)
wedge
b)
screw
c)
lever
d)
pulley
47.
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
d)
pulley
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, wedge, inclined plane
d)
screw, pulley, wedge
49.
How much work is done if Sally uses 10 Newtons to move an object 3 meters?
a)
30 Newtons
b)
13 meters
c)
30 Joules
d)
30 meters
50.
________________ is done whenever a force moves an object a distance
a)
load
b)
friction
c)
force
d)
work
51.
A knife is an example of a (an)
a)
inclined plane
b)
wedge
c)
ramp
d)
pulley
52.
All of these are examples of a wheel and axle except:
a)
pizza cutter
b)
doorknob
c)
windmill
d)
lever
53.
All of the items listed are examples of a wheel and axle except:
a)
pizza cutter
b)
doorknob
c)
windmill
d)
lever
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