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WorksheetsMachines GIU grade 3
Total questions: 88
Worksheet time: 2hrs 39mins
Name
Class
Date
1.
Jamie pushes on a door and it opens. Why has Jamie done work?
a)
Jamie pushed on the door.
b)
The door opened.
c)
The door stayed open.
d)
Jamie didn't pull on the door.
2.
What has to happen for work to be done on an object?
a)
The force you exert has to cause an object to move or change.
b)
Nothing has to move for work to be done.
c)
All you have to do is push or pull very hard on the object.
d)
The lighter the object, the greater the force you need to exert to make it move.
3.
What is the purpose of a simple machine?
a)
to complete homework easily
b)
to use less force to do work.
c)
to keep the direction of the force the same
d)
to enable you to use more force to get work done
4.
When you use a lever, what do you call the object that you want to lift?
a)
fulcrum
b)
lever
c)
load
d)
effort
5.
What happens when the effort and load have the same weight and are each the same distance from the fulcrum of a lever?
a)
The lever tilts toward the force.
b)
The lever tilts toward the effort.
c)
The lever moves between the effort and force.
d)
The lever is balanced between the effort and force.
6.
Chris wants to lift a heavy object using a lever. What should she do to use the least amount of force?
a)
She should apply the effort next to the load.
b)
She should place the fulcrum close to the load.
c)
She should apply the effort close to the fulcrum.
d)
She should place the fulcrum far away from the load.
7.
Dean pulls down on the rope attatched to a fixed pulley. What will happen to the load hanging from the hook on the pulley?
a)
The load will move up.
b)
The load will move down.
c)
The load will move to the left.
d)
The load will move to the right.
8.
What type of simple machine is a screwdriver?
a)
lever
b)
wedge
c)
inclined plane
d)
wheel and axle
9.
What are two ways that simple machines help you do work?
a)
Some simple machines help by allowing you to use less force to do work. Other simple machines help by changing the direction of the force you use.
b)
Some simple machines help by allowing you to use more force to do work. Other simple machines help by not changing the direction of the force you use.
c)
Some complex machines help by allowing you to use ore force to do work. Other complex machines help by changing the direction of the work you use.
d)
Complex machines do not help you to use less force to do work. Otther complex machines do not help by changing the direction of the force you use.
10.
What type of simple machine is a door knob? How is a door knob an example of a simple machine?
a)
A door knob is an inclined plane. Yui use force to roll something. This force changes into a larger force that makes moving things up a ramp easier.
b)
A door knob is a wheel and axle. You use force to turn the knob, or wheel. This force changes into a larger force that turns the axle. The axle is the turning shaft inside the door knob.
11.
What are two ways a block and tackle pulley makes work easier?
a)
A block and tack pulley makes work easier by changing the direction of the force and by reducing the amount of effort needed to lift a load.
b)
A block and tackle pulley makes work harder by changing the direction of the force and by increasing the amount of effort needed to lift a load.
12.
Which is an example a work in a scientific sense?
a)
pushing on a brick wall
b)
pulling on an empty wagon
c)
studying for a test
d)
watching a ball roll across teh floor
13.
For any lever, what is the effort times the distance from the fulcrum equal to?
a)
load divided by the effort
b)
load times the effort
c)
load times its distance from the fulcrum
d)
load divided by its distance from the fulcrum
14.
What happens when a load is placed to the fulcrum on a lever?
a)
The load is lighter in that position.
b)
The load is heavier in that position.
c)
The force is applied over a greater distance.
d)
The force is applies over a smaller distance.
15.
Where is the fulcrum on the oar of a rowboat?
a)
where the oar paddle touches the water
b)
where the person's hand moves the oar.
c)
where the oar attatches to the side of the rowboat.
d)
where the person sits in the middle of the boat
16.
What type of simple machine is a garden hose reel?
a)
pulley
b)
lever
c)
inclined plane
d)
wheel and axle
17.
Which simple machine makes work easier by changing the direction of the force up or down?
a)
pulley
b)
screw
c)
inclined plane
d)
lever
18.
What simple machines work together to make scissors?
a)
wedges and levers
b)
wedges and pulleys
c)
wheels and axles and levers
d)
wheels and axles and pulleys
19.
Cindy lifts a box straight from the floor to the stage of the auditorium. Matt moves a different box of the same weight to the stage, but he uses a ramp to push his box up onto the stage. Which of the following statements is true?
a)
Cindy and Matt both did the same amount of work.
b)
Matt did less work than Cindy.
c)
Cindy used less force than Matt.
d)
Cindy and Matt used the same amount of force.
20.
What type of simple machine is a ladder?
a)
lever
b)
pulley
c)
wedge
d)
inclined plane
21.
You place a heavy box at the top of an inclined plane, and it stays in place. Why does it stay in place?
a)
the force of friction balances the force of gravity
b)
the force of friction balances the force of magnetism
c)
the force of friction is less than the force of gravity
d)
the force of friction is less than the force of magnetism
22.
Describe how an inclined plane is related to a screw.
a)
A screw is a type of wheel and axle. If you use it to go up a pulley, you would see the screw doing work.
b)
A screw is a type of inclined plane. If you unwrap the threads of a screw, you would see an inclined plane.
23.
What type of machine are the blades on a lawnmower?
a)
lever
b)
wedge
c)
inclined plane
d)
wheel and axle
24.
What type of simple machine allows a person to use less force to move a load over a greater distance?
a)
lever
b)
wedge
c)
inclined plane
d)
wheel and axle
25.
Which object is an example of an inclined plane?
a)
oar
b)
pliers
c)
screwdriver
d)
wheelchair ramp
26.
What type of simple machine has an inclined plane twisted around a small stick?
a)
lever
b)
screw
c)
pulley
d)
wedge
27.
A simple machine is a device that helps to reduce the amount of _____ required to work.
a)
force
b)
energy
c)
work
28.
Lightbulb
a)
wedge
b)
pulley
c)
incline plane
d)
screw
29.
What simple machine can be used to split things apart and also it can hold open a door?
a)
Lever
b)
Pulley
c)
Wedge
d)
Screw
30.
What simple machine has a fulcrum and can be used to lift a weight?
a)
Pulley
b)
lever
c)
screw
d)
wedge
31.
What simple machine has a wheel with a groove on it that keeps a rope in place?
a)
pulley
b)
lever
lever
lever
c)
screw
wedge
wedge
d)
wedge
screw
screw
32.
Which simple machine is made up of two parts and can be found on bikes, wagons and wheelbarrows?
a)
wheel and axle
b)
inclined plane
c)
lever
d)
screw
33.
Which simple machine doesn't move and a heavy object can be rolled or pushed up this machine?
a)
wheel and axle
b)
inclined plane
c)
wedge
d)
screw
34.
What type of simple machine are these people using to move the wheel chair into the school bus?
a)
lever
b)
wedge
c)
inclined plane
d)
pulley
35.
What is the fixed point where a lever turns or pivots?
a)
load
b)
work
c)
fulcrum
d)
screw
36.
What is anything that makes work easier called?
a)
screw
b)
wedge
c)
force
d)
machine
37.
A machine with few or no moving parts is called a ______.
a)
machine
b)
compound machine
c)
simple machine
d)
work
38.
Which is not a type of simple machine?
a)
spring
b)
screw
c)
pulley
d)
wedge
39.
What type of simple machine is found on the cap of a pickle jar?
a)
lever
b)
inclined plane
c)
pulley
d)
screw
40.
Which of these is an example of a wedge?
a)
skateboard
b)
broom
c)
stairs
d)
butter knife
41.
Which of these is not an example of an inclined plane?
a)
ladder
b)
stairs
c)
wall
d)
driveway
42.
Which is an example of someone using a simple machine to do work?
a)
a boy runs across a football field
b)
a banker counts money
c)
a mother pushes a stroller up a ramp
d)
a girl eats a sandwich
43.
Which is a characteristic of a simple machine?
a)
They run on electricity.
b)
They take a long time to make.
c)
They have few or no moving parts.
d)
They are not very large.
44.
Mechanical Advantage: To drive objects apart.
a)
Pulley
b)
Inclined Plane
c)
Wedge
d)
Wheel and Axle
45.
What type of simple machine is shown here?
a)
Pulley
b)
Wheel and Axle
c)
Lever
d)
Wedge
46.
An axe is an example of a
a)
pulley
b)
inclined plane
c)
screw
d)
wedge
47.
A seesaw is an example of a
a)
wedge
b)
lever
c)
inclined plane
d)
pulley
48.
Stairs
a)
wedge
b)
pulley
c)
inclined plane
d)
wheel and axle
49.
What type of simple machine is found on the cap of a pickle jar?
a)
lever
b)
inclined plane
c)
pulley
d)
screw
50.
The device used to raise a flag up a flag pole is an example of a
a)
wheel and axle
b)
lever
c)
inclined plane
d)
pulley
51.
Which of the following does a simple machine do?
a)
allows the users to apply less force over a longer distance
b)
reduce the amount of force needed to do work
c)
change the direction of the applied force
d)
all of the above
52.
Two examples of a pulley...
a)
knife & axe blade
b)
lightbulb & screw
c)
flagpole hoist & window blinds
d)
catapult & teeter totter
53.
Mr. Smith uses a ramp to load a heavy box onto the back of his truck. By using the ramp, instead of just lifting the box, Mr. Smith ____________.
a)
needs to do less force
b)
does less work
c)
has a harder job to do
d)
does more work
54.
Hammers can be used to pull nails out of wood. What type of simple machine is a hammer?
a)
screw
b)
lever
c)
pulley
d)
inclined plane
55.
A car is made up of hundred of parts. Why does a car have so many parts?
a)
A car with more parts goes faster
b)
Most of the parts are there to make the car look better
c)
The parts work together to make the car run properly
d)
A car contains many extra parts in case any of them break
56.
Simple machines have helped us in everyday life. What kind of simple machine is a knife?
a)
wheel and axle
b)
wedge
c)
screw
d)
pulley
57.
Identify this simple machine
a)
Lever
b)
Wheel & Axle
c)
Inclined Plane
d)
Screw
58.
Which of the following does a simple machine do?
a)
allows the users to apply less force over a longer distance
b)
reduce the amount of force needed to do work
c)
change the direction of the applied force
d)
all of the above
59.
Which is an example of someone using a simple machine to do work?
a)
a boy runs across a football field
b)
a banker counts money
c)
a mother pushes a stroller up a ramp
d)
a girl eats a sandwich
60.
The device used to raise a flag up a flag pole is an example of a
a)
wheel and axle
b)
lever
c)
inclined plane
d)
pulley
61.
Stairs
a)
wedge
b)
pulley
c)
inclined plane
d)
wheel and axle
62.
Lightbulb
a)
wedge
b)
pulley
c)
incline plane
d)
screw
63.
What type of simple machine is found on the cap of a pickle jar?
a)
lever
b)
inclined plane
c)
pulley
d)
screw
64.
This device
a)
wedge
b)
lever
c)
incline plane
d)
wheel and axle
65.
What type of simple machine is this?
a)
wheel and axle
b)
gear
c)
lever
d)
inclined plane
66.
The fixed point on the lever is called
a)
load
b)
resistance
c)
bar
d)
fulcrum
67.
The transfer of energy that occurs when a force makes an object move is known as
a)
effort
b)
potential
c)
kinetic
d)
work
68.
A flat sloping surface that connects lower and higher elevations. It makes raising objects easier.
a)
wedge
b)
screw
c)
lever
d)
inclined plane
69.
What is an example of an inclined plane?
a)
crane
b)
slide
c)
bike
d)
see-saw
70.
What is an example of a wheel and axle?
a)
ax
b)
light bulb
c)
skateboard ramp
d)
bus tire
71.
What is an example of a pulley?
a)
slide
b)
flag pole
c)
ax
d)
chapstick
72.
What is an example of a screw?
a)
arm
b)
ax
c)
light bulb
d)
ramp
73.
What does magnetic mean?
a)
means attracted to a magnet
b)
a machine with few or no moving parts
c)
stiff bar that rests on a fulcrum
d)
an inclined plane that is wrapped around an axle
74.
What is an inclined plane?
a)
wheels that turn on a post
b)
made from two or more simple machines
c)
flat surface that is higher at one end
d)
uses a wheel and a rope to lift a load
75.
What is a compound machine?
a)
uses a wheel and rope to lift a load
b)
wheel that turns on a post
c)
flat surface that is higher at one end
d)
made from two or more simple machines
76.
What is a pulley?
a)
wheel that turns on a post
b)
uses a wheel and rope to lift a load
c)
made of two or more simple machines
d)
flat surface that is higher at one end
77.
Which one is a resistance force?
a)
me pulling the leash
b)
you pushing a rock
c)
me pushing your desk
d)
weight of a car you are pushing
78.
What is an example of a wedge?
a)
door stop
b)
Your hair
c)
curtain
d)
wood screw
79.
A simple machine that can split things apart or hold a door open.
a)
wedge
b)
screw
c)
lever
d)
hand
80.
What type of simple machine is this?
a)
wheel and axle
b)
gear
c)
lever
d)
inclined plane
81.
Name this simple machine.
a)
Wheel and Axle
b)
Lever
c)
Pulley
d)
Wedge
82.
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.
83.
What is the center point of a lever called?
a)
Fulcrom
b)
A Thingy
c)
Cheese
d)
A Brick
84.
An object can accelerate by speeding up, slowing down, or ________.
a)
changing direction
b)
gaining more gravity
c)
splitting in half
85.
A force is a _________ or ________ that acts on an object.
a)
hot, cold
b)
push, pull
c)
temperature, mass
86.
This picture is an example of a _________.
a)
pulley
b)
wedge
c)
wheel and axle
d)
screw
87.
What type of simple machine are these people using to move the wheel chair into the school bus?
a)
lever
b)
wedge
c)
inclined plane
d)
pulley
88.
What kind of work is made easier by the wheels of this object?
a)
pushing a heavy load
b)
lifting a heavy load
c)
dividing a heavy load
d)
holding a small load
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