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Simple Machines

Total questions: 50

Worksheet time: 25mins

Name
Class
Date
1.
This type of simple machine uses a wheel to change the direction of a force.
a)
wedge
b)
lever
c)
pulley
d)
screw
2.
All simple machines help make work _________.
a)
harder
b)
smaller
c)
lighter
d)
easier
3.

The unit of measure for work is_____________.

a)

meters

b)

joules

c)

newtons

d)

millibars

4.

The unit of measure for force is _____________

a)

meters

b)

joules

c)

miles per hour

d)

newtons

5.

Force is measured with a _________________

a)

barometer

b)

hygrometer

c)

spring scale

d)

meter stick

6.

True or False. The formula for work is Work = Force x Distance (W= F x D).

a)

True

b)

False

7.

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.

8.

True or False. When a force is applied to an object and it does not move then work was done.

a)

True

b)

False

9.

How much work was done when a force of 12 newtons was applied to an object and the object move 2 meters?

a)

14 Joules

b)

24 Joules

c)

14 Newtons

d)

24 Newtons

10.

A boy uses this simple machine to lift a load. How does this machine help the boy to do work?

a)

by changing the direction

b)

by reducing total work

c)

by decreasing distance

d)

by reducing effort force

11.

A boy adds movable pulley to make a pulley system. What mechanical advantage does a movable pulley provide?

a)

it provides another wheel for the chain to sit on.

b)

it will change the direction faster than with 1 fixed pulley

c)

it will greatly reduce the force needed to lift the load

d)

it will cause the object to move in the same direction

12.

Which model will require the least amount of force?

a)

pulley 1

b)

pulley 2

c)

pulley 3

d)

pulley 4

13.

How can you increase the efficiency of a pulley?

a)

change its color

b)

apply oil to the wheels to help them spin better

c)

decrease the size of the wheels

d)

cover the wheels with a rough material

14.

An ax head is a simple machine called a wedge. How can you make the cutting edge more efficient?

a)

make it longer

b)

make it shorter

c)

make sharper

d)

make it more rounded

15.

How can you make an inclined plane more efficient?

a)

cover it with a rough material

b)

make it face the opposite direction

c)

increase the height

d)

increase the length

16.

Which ramp will require the least amount of force?

a)

A

b)

B

c)

C

d)

D

17.

_____________ are a sloping surface.

a)

pulleys

b)

inclined planes

c)

levers

d)

wheel and axles

18.

_____________are made up of a grooved wheel with rope/chain running along the groove.

a)

ramp

b)

inclined plane

c)

pulley

d)

lever

19.

A lever rotates on a fixed point called a _______________

a)

screw

b)

wheel

c)

ramp

d)

fulcrum

20.

wheelbarrows, fishing rods and baseball bats are all examples of ________________

a)

inclined planes

b)

wedges

c)

levers

d)

compound machines

21.

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.

22.

In order to exert the least amount of force, where should the fulcrum be placed?

a)

position D

b)

position C

c)

position B

d)

position A

23.
A wheelbarrow is an example of
a)
First Class Lever
b)
Second Class Lever
c)
Third Class Lever
d)
Fourth Class Lever
24.
In a first class lever, the _____ is in the middle.
a)
Effort
b)
Fulcrum
c)
Load
d)
Machine
25.
In a second class lever, the ______ is in the middle.
a)
Effort
b)
Fulcrum
c)
Load
d)
Machine
26.
In third class levers, the ______ is in the middle. 
a)
Effort
b)
Fulcrum
c)
Load
27.
Which simple machine is really a modified version of the inclined plane?
a)
Pulley
b)
Lever
c)
Wedge
d)
I don't know
28.
The flag pole mechanism is an example of which simple machine? 
a)
Inclined Plane
b)
Lever
c)
Wedge
d)
Pulley
29.
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
30.
Which of these is not part of the lever?
a)
Object
b)
Fulcrum
c)
Load
d)
Lever
31.
The force placed on the simple machine to move the load is called the ____.
a)
Effort
b)
Fulcrum
c)
Load
d)
Lever
32.
Simple machines allow us to do less work.
a)
TRUE
b)
FALSE
33.
A simple machine used to push two objects apart.
a)
Lever
b)
Inclined Plane
c)
Wedge
d)
Screw
34.
The two forces applied on a pulley are
a)
Effort Force and Resistance Force
b)
Effort and Load
35.
Which choice is an example of a lever?
a)
Axe
b)
Seesaw
c)
Bottle Cap
d)
Tunnel
36.
A log splitting machine was invented to split logs quickly. A motor powers a metal piece that is pushed through the middle of a log. The metal piece used to split a log is an example of what simple machine? 
a)
wedge
b)
pulley
c)
screw
d)
lever
37.
 The picture shows a student using a pulley system to raise a flag. Which statement correctly describes the function of this system? 
a)
The more force used to pull the string, the more string will be needed to raise the flag. 
b)
The more force used to pull the string, the faster the flag will move up the flagpole. 
c)
The less force used to pull the string, the greater the distance the flag will move. 
d)
The less force used to pull the string, the longer the flag will remain raised.
38.
The picture shows the inside of a watch. This watch uses both a battery and a simple machine to measure time. The arrow points to the simple machine inside the watch. What simple machine helps make the watch measure time? 
a)
a wheel and axle 
b)
an inclined plane 
c)
a screw 
d)
a lever 
39.
A doorknob is an example of a
a)
wheel and axle
b)
inclined plane
c)
pulley
d)
wedge
40.
Which type simple machine would the base of a light bulb be?
a)
screw
b)
wedge
c)
wheel and axle
d)
pulley
41.
A lever turns back and forth on a
a)
effort
b)
load
c)
work
d)
fulcrum
42.
A ramp is an example of a(n)
a)
inclined plane
b)
fulcrum
c)
force
d)
lever
43.
________________ is done whenever a force moves an object a distance
a)
load
b)
friction
c)
force
d)
work
44.
An object being lifted or moved is a
a)
load
b)
fulcrum
c)
force
d)
work
45.
A push or pull is a 
a)
load
b)
fulcrum
c)
force
d)
work
46.
To increase the mechanical advantage of a lever
a)
make sure the fulcrum is in the middle of the lever
b)
move the fulcrum closer to the load
c)
move the fulcrum closer to the effort
d)
use a bigger fulcrum
47.
In this illustration,
a)
the machine is decreasing mechanical advantage
b)
the machine is increasing mechanical advantage
c)
mechanical advantage is not changed
48.
All of these are examples of a wheel and axle except:
a)
pizza cutter
b)
doorknob
c)
windmill
d)
lever
49.

An axe is an example of a

a)

pulley

b)

inclined plane

c)

screw

d)

wedge

50.
Name this simple machine. 
a)
Wheel and Axle
b)
Lever
c)
Pulley
d)
Wedge

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