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Simple Machines

Total questions: 60

Worksheet time: 53mins

Name
Class
Date
1.
Why is it harder for the boy in Image B to get down the hill?
a)
Motion
b)
Friction
c)
Work
d)
Displacement
2.
What is the unit to MEASURE force?
a)
Kilogram
b)
Meter
c)
Pascal
d)
Newton
3.
A ____________ is a push or a pull on an object.
a)
friction
b)
force
c)
magnet
d)
gravity
4.
Why is there less friction between two ice cubes touching than between sandpaper on wood?
a)
They have rough surfaces.
b)
They have loud surfaces.
c)
They have smooth surfaces.
d)
They have bright surfaces.
5.
What is one way to reduce friction?
a)
Put sandpaper between the surfaces that touch.
b)
Push the surfaces closer together.
c)
Shine a light on the surfaces.
d)
Put a slippery substance between the surfaces.
6.
In which of the following activity is friction useful?
a)
sliding down a snowy hill on a sled
b)
ice skating
c)
running around a track
d)
roller blading
7.
In the image, what force is acting on arrow A?
a)
friction
b)
gravity
c)
push
d)
Jedi force
8.
Which would require the most force to move?
a)
a toy car
b)
a sleeping cat
c)
a science book
d)
a chair with a friend sitting in it
9.
In which of the following situations do your arms do work on books?
a)
holding a heavy stack of books while standing
b)
carrying a heavy stack of books
c)
dropping a stack of books onto a table
d)
picking up a pile of books from the floor
10.
Is this an example of work? 
A book falls off a table and free falls to the ground.
a)
True
b)
False
11.

Which of the following would be an example of Work

a)

13W

b)

14m

c)

45J

d)

10N

12.
What is gravity?
a)
A mythical creature that only comes out at night.
b)
A force that pulls all objects off the Earth.
c)
A force that pulls all objects down to the earth.
d)
The energy needed to make an object move.
13.
Name this simple machine.
a)
Lever
b)
Wedge
c)
Pulley
d)
Inclined Plane
14.
Name this simple machine. 
a)
Wheel and Axle
b)
Lever
c)
Pulley
d)
Wedge
15.
Name this simple machine. 
a)
Wheel and Axle
b)
Lever
c)
Pulley
d)
Wedge
16.
Name this simple machine. 
a)
Inclined Plane
b)
Lever
c)
Pulley
d)
Wedge
17.
Name this simple machine. 
a)
Screw
b)
Lever
c)
Pulley
d)
Wedge
18.
Which choice is an example of a pulley?
a)
Axe
b)
Seesaw
c)
Crane 
d)
Tunnel
19.

Which choice is an example of a wedge?

a)

Axe

b)

Seesaw

c)

Crane

d)

Screw driver

20.
Which choice is an example of a screw?
a)
Axe
b)
Seesaw
c)
Bottle Cap
d)
Tunnel
21.
Which choice is an example of a lever?
a)
Axe
b)
Seesaw
c)
Bottle Cap
d)
Tunnel
22.
Which choice is an example of a wheel and axle?
a)
Axe
b)
Seesaw
c)
Bottle Cap
d)
Ferris Wheel 
23.
Which choice is an example of an inclined plane?
a)
A ramp
b)
Seesaw
c)
Bottle Cap
d)
Ferris Wheel 
24.

What is the center point of this lever called?

a)

Fulcrum

b)

balance point

c)

Cheese

d)

triangle

25.
Which is not a type of simple machine?
a)
spring
b)
screw
c)
pulley
d)
wedge
26.
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
27.
Which of the following is NOT an example of a compound machine?
a)
scissors
b)
fishing pole
c)
ramp
28.
What is this an example of?
a)
wheel and axle
b)
lever
c)
inclined plane
d)
pulley
29.
What is this an example of?
a)
pulley
b)
lever
c)
inclined plane
d)
wheel and axle
30.

What simple machine is pictured?

a)

inclined plane

b)

screw

c)

wedge

d)

lever

31.

A simple machine consisting of a flat, slanted surface.

a)

inclined plane

b)

screw

c)

pulley

d)

wedge

32.
A simple machine consisting of a rope or cable that runs around a grooved wheel.
a)
wheel and axle
b)
wedge
c)
pulley
33.
Which surface causes the most friction: a tile floor, a grassy field, a paved road?
a)
grassy field
b)
paved road
c)
tile floor
34.

This simple machine is a

a)

screw

b)

lever

c)

wheel and axle

d)

wedge

35.
What is an example of an inclined plane?
a)
crane
b)
slide
c)
bike
d)
see-saw
36.

What is a screw?

a)

a flat or slanted surface

b)

an inclined plane that is wrapped around a cylinder

c)

stiff bar that rests on a fulcrum

d)

made of 2 inclined planes that are back to back

37.

A lightbulb is an example of a ___________________________.

a)

wedge

b)

pulley

c)

incline plane

d)

screw

38.

What type of simple machine is this?

a)

wheel and axle

b)

screw

c)

lever

d)

inclined plane

39.
The fixed point on the lever is called 
a)
load
b)
resistance
c)
bar
d)
fulcrum
40.

Two examples of a pulley...

a)

knife & axe blade

b)

lightbulb & screw

c)

flagpole hoist & window blinds

d)

catapult & seesaw

41.
How does a pulley make work easier? 
a)
It changes the direction of the input force.
b)
It changes the distance over which the input force is applied.
c)
It changes the amount of the input force applied 
d)
It changes direction and increases the effect of your input force
42.

What reduces the efficiency of a simple machine?

a)

Heat

b)

Friction

c)

Mechanical Advantage

d)

Input Force

43.
If I lift a 500N object 2m off the ground, am I doing work? 
a)
Yes
b)
No
44.
_________ is an example of a lever.
a)
Hammer
b)
Crowbar
c)
Wheelbarrow
d)
All of the above
45.
What is the mechanical advantage of this pulley system?
a)
2
b)
3
c)
4
d)
5
46.

How does a single fixed pulley, 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

47.
What is the equation for work
a)
W = F x D
b)
F = M x A
c)
y = mx + b
d)
25 eevee eggs equals one evolution
48.
when using 1 rope with a pulley, there is :
a)
an increase in mechanical advantage
b)
a decrease in mechanical advantage
c)
no mechanical advantage
d)
four times as much mechanical advantage
49.
What is input force?
a)
3 times the output force
b)
a push or a pull
c)
80N
d)
the amount of force you exert on a machine
50.

Simple machines do not reduce the energy or work you need to move things, but they do reduce your ____________________________?

a)

Weight

b)

Mass

c)

Force

d)

Height

51.

How much work is produced when 300 N is used to move a car 5 m (W=Fd)?

a)

15 J

b)

1500 J

c)

155 J

d)

175 J

52.

What is mechanical advantage?

a)

The advantage a machine has over a human

b)

A measure of how much a simple machine reduces work

c)

A measure of when is the best time to use a simple machine

d)

the number of times a machine increases input force

53.

What is effort (input) force?

a)

the force one exerts on a machine

b)

the force which an effort force must overcome in order to do work on an object via a simple machine.

c)

the force the machine exerts on a object

d)

the output work times the input distance

54.

What is resistance (output) force?

a)

the force required by a machine in order to accomplish work (the force you put on the machine)

b)

The force that is exerted by a machine

c)

the force the machine exerts on a object

d)

the output work times the input distance

55.

How FAST work is done is called ___________________________________. For example, a microwave cooks food faster than an oven.

a)

efficiency

b)

power

c)

speed

d)

None of the above

56.

Although it would be ideal for a machine to operate at 100% efficiency, that is impossible because some of the kinetic energy is converted into _______________________________

a)

radiant energy

b)

thermal energy

c)

nuclear energy

d)

potential energy

57.

Which objects are an example of a lever? (Pick two)

a)
b)
c)
d)
58.

These teeth are used in tearing food. They are a perfect example of a(n)

a)

inclined plane

b)

wedge

c)

lever

d)

screw

59.

Dental Floss is an example of which simple machine?

a)

pulley

b)

inclined plane

c)

wedge

d)

lever

60.

The reel of a fishing pole is a _____________________________________ and the rod is a ______________________________.

a)

pulley;wheel and axle

b)

wheel and axle;lever

c)

inclined plane;screw

d)

wheel and axle;inclined plane

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