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WorksheetsSimple Machines
Total questions: 30
Worksheet time: 1hrs 6mins
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.
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
9.
Pedals, handle bars and handbrakes on a bicycle
a)
wedges
b)
pulleys
c)
incline planes
d)
levers
10.
This device
a)
wedge
b)
lever
c)
incline plane
d)
wheel and axle
11.
This device
a)
wedge
b)
lever
c)
incline plane
d)
wheel and axle
12.
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
13.
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
14.
What force opposes motion motion and decreases the efficiency of a machine?
a)
gravity
b)
friction
c)
pressure
15.
Screws and wedges are examples of what other type of simple machine?
a)
pulley
b)
inclined plane
c)
levers
d)
gears
16.
What type of simple machine is this?
a)
wheel and axle
b)
gear
c)
lever
d)
inclined plane
17.
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
18.
Consists of two or more simple machines.
a)
multiple machine
b)
compound machine
c)
duplex machine
19.
Which of the following is NOT an example of a compound machine?
a)
scissors
b)
fishing pole
c)
ramp
20.
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
21.
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
22.
A ______ is a grooved wheel with a rope running along the groove.
a)
lever
b)
pulley
c)
screw
23.
Consists of two circular objects; a central shaft (axle) and a wheel.
a)
wheel and axle
b)
screw
c)
pulley
24.
A simple machine that can split things apart or hold a door open.
a)
wedge
b)
screw
c)
lever
25.
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
26.
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
27.
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
28.
A simple machine is a device that helps to reduce the amount of _____ required to work.
a)
force
b)
energy
c)
work
29.
____ is done when a force is applied over a distance.
a)
energy
b)
work
c)
force
30.
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
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