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WorksheetsSimple Machines: Levers
Total questions: 40
Worksheet time: 24mins
Name
Class
Date
1.
An example of a lever is a ...
a)
pulley
b)
bicycle
c)
scissors
d)
screw
2.
For a lever to be a first class lever the fulcrum needs to be ..
a)
between the load and the effort
b)
on one side and the load and effort on the other side
c)
on the same side as the load arm.
3.
A good example of a second class lever is the ...
a)
Can-opener
b)
Wheelbarrow
c)
hammer
d)
tongs
4.
A force multiplier is a simple machine that multiplies your ...
a)
strength
b)
effort
c)
load
d)
speed
5.
A lever is used to raised a 12 kilograms mass with a effort that is only 4 kilograms. What is the mechanical advantage ?
a)
12
b)
4
c)
3
d)
32
6.
Third class levers are said to be speed multipliers.
examples of third class levers include all of the below except .....
examples of third class levers include all of the below except .....
a)
a door handle
b)
baseball bat
c)
tennis rachet
d)
golf club
7.
Third class levers give a speed advantage because they...
a)
the move a load through a large distance than the effort moves the same time
b)
Moves an effort a further distance than the load
c)
allow you to catch a fish quickly before you applied so much effort
d)
allow you to pick up a heavy load quickly
8.
When you kick a ball the fulcrum is your ..
a)
foot
b)
ball
c)
leg
d)
knee
9.
Effort is
a)
An inclined plane wrapped around a rod
b)
A unit used for measuring force
c)
How far an object moves in a certain amount of time
d)
The force applied to a simple machine
10.
If the fulcrum is closer to the effort, it will take
a)
more force to lift the load
b)
less force to lift the load
c)
equal force to the lift the load
d)
no force to life the load
11.
Mechanical Advantage
a)
gives the pulley a change in direction
b)
reduces the effort needed to lift the load
c)
neither
12.
A wheelbarrow is an example of
a)
First Class Lever
b)
Second Class Lever
c)
Third Class Lever
d)
Fourth Class Lever
13.
In a first class lever, the _____ is in the middle.
a)
Effort
b)
Fulcrum
c)
Load
d)
Machine
14.
In a second class lever, the ______ is in the middle.
a)
Effort
b)
Fulcrum
c)
Load
d)
Machine
15.
In third class levers, the ______ is in the middle.
a)
Effort
b)
Fulcrum
c)
Load
16.
Which of the following does a simple machine NOT do?
a)
Increase the force applied
b)
Increase the distance the force is applied over
c)
Change the direction the force is applied
d)
Change the amount of work that needs to be done
17.
Which of these is not part of the lever?
a)
Object
b)
Fulcrum
c)
Load
d)
Lever
18.
The force placed on the simple machine to move the load is called the ____.
a)
Effort
b)
Fulcrum
c)
Load
d)
Lever
19.
Simple machines allow us to do less work.
a)
TRUE
b)
FALSE
20.
Simple machines make the work we have to do easier, but it is still the same amount of work.
a)
TRUE
b)
FALSE
21.
The unit of measure for work is_____________.
a)
meters
b)
joules
c)
newtons
d)
millibars
22.
The unit of measure for force is _____________
a)
meters
b)
joules
c)
miles per hour
d)
newtons
23.
True or False. The formula for work is Work = Force x Distance (W= F x D).
a)
True
b)
False
24.
Work is done when .....
a)
a force is exerted on an object.
b)
an object exerts force onto another object.
c)
a force is exerted on an object causing the object to move.
d)
an object does not move.
25.
A lever rotates on a fixed point called a _______________
a)
screw
b)
wheel
c)
ramp
d)
fulcrum
26.
wheelbarrows, fishing rods and baseball bats are all examples of ________________
a)
inclined planes
b)
wedges
c)
levers
d)
compound machines
27.
If you needed to use a lever to move a heavy object, where is the best place to place the load?
a)
next to where the force is applied
b)
directly under the fulcrum
c)
opposite end of the fulcrum
d)
near the fulcrum.
28.
A simple machine is a device that helps to reduce the amount of _____ required to work.
a)
force
b)
energy
c)
work
29.
In a first-class lever, ...
a)
the effort is located between the fulcrum and the resistance
b)
the fulcrum is located at the end of the lever
c)
the resistance is located between the fulcrum and the effort
d)
the fulcrum is located between the effort and the resistance
30.
First- and second-class levers amplify effort or force. Third-class levers amplify ...
a)
friction
b)
distance
c)
pitch
d)
power
31.
A mechanical advantage of <1 indicates...
a)
you are unable to determine just by the number value
b)
you are at a disadvantage when you use the machine
c)
the whole system is in balance
d)
you are at an advantage when you use the machine
32.
A mechanical advantage of 1 indicates ...
a)
you are at an advantage when using the machine
b)
you are unable to determine just by the number value
c)
you are at a disadvantage when using the mcahine
d)
the system is in balance
33.
Which of the following would not be classified as a lever?
a)
wheelbarrow
b)
baseball
c)
crowbar
d)
tweezers
34.
The majority of the appendage-joint combinations in the human body ...
a)
are 2nd class levers
b)
are 1st class levers
c)
cannot be classified as a specific lever type
d)
are 3rd class levers
35.
Mechanical advantage is expressed ...
a)
in newtons squared
b)
in joules
c)
without any units
d)
in joules squared
36.
In a second-class lever, ...
a)
the effort is located between the fulcrum and the resistance
b)
the resistance is located between the fulcrum and the effort
c)
the fulcrum is located between the effort and the resistance
d)
the resistance is located at the end of the lever
37.
Which of the following items represents a second-class lever?
a)
seesaw
b)
tweezers
c)
crowbar
d)
nutcracker
38.
Work can occur without motion.
a)
TRUE
b)
FALSE
39.
A seesaw on a playground is an example of what type of simple machine?
a)
screw
b)
wedge
c)
lever
d)
wheel and axle
40.
Compound machines are made of _____.
a)
two or more simple machines
b)
one simple machine
c)
two or more compound machines
d)
one simple machine and one compound machine
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