Quiz about 2024 Simple Machines Unit Test Review

Question 1

The back of a hammer, called the claw, can be used to pull a nail out of a board. The claw is placed around the nail, and then the handle is forced down to pull the nail out of the board. When the claw of a hammer is used to pull a nail out of a board, what kind of simple machine is it being used as?

Accepted Answer

lever

Answer

pulley

Answer

wheel and axle

Answer

screw

Question 2

Select the THREE examples of a screw.

Accepted Answer

Option A is correct

Accepted Answer

Option B is correct

Accepted Answer

Option D is correct

Answer

C.

Question 3

Select the THREE examples of a pulley.

Accepted Answer

Option B is correct

Accepted Answer

Option C is correct

Accepted Answer

Option D is correct

Answer

A.

Question 4

Select the THREE examples of a wheel and axle.

Accepted Answer

Option A is correct

Accepted Answer

Option B is correct

Accepted Answer

Option D is correct

Answer

C.

Question 5

Select the THREE examples of a wedge.

Accepted Answer

Option A is correct

Accepted Answer

Option B is correct

Accepted Answer

Question 6

Select the THREE examples of a lever.

Accepted Answer

Option A is correct

Accepted Answer

Option B is correct

Accepted Answer

Option D is correct

Answer

C.

Question 7

Select the THREE examples of an inclined plane.

Accepted Answer

Option B is correct

Accepted Answer

Option C is correct

Accepted Answer

Option D is correct

Answer

A.

Question 8

Which type of simple machine is a baseball bat?

Accepted Answer

lever

Answer

wedge

Answer

pulley

Answer

screw

Question 9

For a satellite to stay in orbit around Earth, it has to be moving forward very fast all the time. What force will make it fall to Earth if it goes too slowly?

Accepted Answer

the Earth's gravity

Answer

the force of friction

Answer

the Sun's gravity

Answer

the magnetic force from Earth's North Pole

Question 10

Kyle and Jon are both pushing the same box. Kyle is pushing to the right. Jon is pushing to the left. Which of these would make the box move to the left?

Accepted Answer

Jon pushes the box with more force than Kyle.

Answer

Jon and Kyle push the box with the same amount of force.

Answer

Kyle and Jon both stop pushing the box.

Answer

Kyle pushes the box with more force than Jon.

Question 11

Kyle and Jon are both pushing the same box. Kyle is pushing to the right. Jon is pushing to the left. The box will not move if...

Accepted Answer

Jon and Kyle push the box with the same amount of force.

Answer

Kyle stops pushing the box, but Jon does not.

Answer

Kyle pushes the box with more force than Jon.

Answer

Jon pushes the box with more force than Kyle.

Question 12

Kyle and Jon are both pushing the same box. Kyle is pushing to the right. Jon is pushing to the left. Which of these would make the box move to the right?

Accepted Answer

Kyle pushes the box with more force than Jon.

Answer

Kyle and Jon both stop pushing the box.

Answer

Jon and Kyle push the box with the same amount of force.

Answer

Jon pushes the box with more force than Kyle.

Question 13

Which of the following statements is true?

Accepted Answer

Balanced forces do not cause a change in motion.

Answer

Unbalanced forces do not cause a change in motion.

Answer

Balanced forces always cause a change in motion.

Answer

Gravity always causes a change in motion.

Question 14

Two boys are at different locations on Earth as shown. Each boy drops a paper ball in the wastebasket. In which direction will each paper ball fall?

Accepted Answer

toward the center of the Earth

Answer

sideways toward each boy

Answer

upwards toward the hand of each boy

Answer

toward the oceans of the Earth

Question 15

The picture shows a man using a rod to move a boulder. The rod is resting on a smaller stone near the boulder. The man is using the rod and stone as which kind of simple machine?

Accepted Answer

lever

Answer

pulley

Answer

inclined plane

Answer

wheel and axle

Question 16

Which of the following examples BEST demonstrates balanced forces?

Accepted Answer

a basketball sitting on a table

Answer

a basketball flying through the air

Answer

a basketball rolling on the ground

Answer

a basketball bouncing on the ground

Question 17

Eagle A and Eagle B are both pulling on the ring. What would happen if they both pulled on the ring with the same amount of force?

Accepted Answer

The ring wouldn't move.

Answer

The ring would move towards Eagle A.

Answer

The ring would move towards Eagle B.

Answer

The ring would move towards Eagle A, then move back towards Eagle B.

Question 18

Eagle A and Eagle B are both pulling on the ring. Eagle B was able to take the ring away from Eagle A. This means that Eagle B...

Accepted Answer

used more force than Eagle A.

Answer

didn't use any force.

Answer

used less force than Eagle A.

Answer

used the same amount of force as Eagle A.

Question 19

Both the red stickman and blue stickman are pushing the box in front of a tree. What is this diagram showing?

Accepted Answer

The blue stickman is applying more force.

Answer

The red stickman is applying more force.

Answer

The force applied on the box is balanced.

Answer

They are both applying the same amount of force.

Question 20

Which simple machine changes the direction of force needed to do a task without changing the size of the force needed?

Accepted Answer

a pulley

Answer

a wedge

Answer

an inclined plane

Answer

a screw

Question 21

Children in the school yard observe leaves falling to the ground in autumn. What causes the leaves to land on the ground?

Accepted Answer

gravity

Answer

magnetism

Answer

evaporation

Answer

birds

Question 22

What is one way that simple machines can make work easier?

Accepted Answer

by changing the direction of the input force

Answer

by making people stronger

Answer

by reducing the weight of objects

Answer

by reducing the amount of energy needed to perform a task

Question 23

Which of these steps could be used in an investigation about the effect of gravity?

Accepted Answer

measuring the time it takes for a ball to fall a certain distance

Answer

counting how many paper clips stick to a magnet in a chain

Answer

testing which surface is easier to slide a wooden block across

Answer

measuring the distance a toy car moves after it is pushed

Question 24

Which statement is the best definition for gravity?

Accepted Answer

Gravity is the natural force that causes objects to move toward the center of the Earth.

Answer

Gravity is responsible for keeping objects in orbit around one another; gravity is strongest on the Moon and weakest on the Earth.

Answer

Gravity is the force that is formed in the crust of the planet and holds objects to the surface of the Earth.

Answer

Gravity is a force that pulls objects toward the South Pole of the Earth.

Question 25

Shoelaces and the holes they are threaded through are most like which kind of simple machine?

Accepted Answer

pulleys

Answer

screws

Answer

wheel and axle

Answer

inclined plane

Question 26

The handles of a wheelbarrow are an example of a(n) _______.

Accepted Answer

lever

Answer

inclined plane

Answer

wedge

Answer

pulley

Question 27

A soccer ball is at rest in the center of a field. If Madison kicks the ball to the right with a large force, what will happen to the ball?

Accepted Answer

The ball will begin to move to the right.

Answer

The ball will not move at all.

Answer

The ball will begin to move to the left.

Answer

The ball will move in a zigzag pattern.

Question 28

The back of the truck below has a simple machine that makes it easier to load objects inside. What type of simple machine is this?

Accepted Answer

inclined plane

Answer

wheel and axle

Answer

lever

Answer

pulley

Question 29

It is easier to ride a bicycle down a hill than to ride up a hill because _______ helps the bicycle move down the hill.

Accepted Answer

gravity

Answer

friction

Answer

rotation

Answer

magnetism

Question 30

A box is sitting on the floor. Then, two workers start pushing on the box with the same amount of force. This is shown in the picture. The arrows, in the picture, show the direction of each force. What happens to the box while they are pushing on it?

Accepted Answer

The box does not move.

Answer

The box moves to the left.

Answer

The box moves to the right.

Answer

The box moves upward.

Question 31

If you closely examine a screw, you will see that the threads on it form a long _________________ wrapped around a cylinder.

Accepted Answer

inclined plane

Answer

wedge

Answer

wheel and axle

Answer

pulley

Question 32

A flagpole is a simple device on which a flag can be raised or lowered. Which simple machine is usually part of a flag pole?

Accepted Answer

pulley

Answer

inclined plane

Answer

lever

Answer

wedge

Question 33

Choose the THREE sentences that demonstrate balanced forces.

Accepted Answer

a boy who can't push a heavy cart.

Accepted Answer

a plate sitting on a table

Accepted Answer

sitting still on a chair

Answer

a leaf falling from a tree

Question 34

This is a 50-pound crate with two people applying force on opposite sides. Person A is applying 60 pounds of force toward the right, and Person B is applying 70 pounds of force to the left. Choose the TWO correct statements about what is shown.

Accepted Answer

Person B is applying more force than Person A.

Accepted Answer

The crate will move to the left, toward Person A.

Answer

Force is applied to two sides, so the crate will not move.

Answer

Person A is applying more force than Person B.

Answer

The create will move the right, toward Person B.

Question 35

What type of simple machine is being used to lift the bucket?

Accepted Answer

pulley

Answer

wedge

Answer

lever

Answer

screw

Question 36

Four scouts are doing different jobs at camp. Which scout is using a pulley?

Accepted Answer

Scout C raises the flag on a flagpole.

Answer

Scout A pries open a can of fruit for breakfast.

Answer

Scout B rolls a wheelbarrow full of firewood to the campsite.

Answer

Scout D trims hedges with hedge clippers.

Question 37

This is a 60-pound crate with a person pushing it to the right. Choose the TWO amounts of force that would cause this crate to move to the right.

Accepted Answer

68

Accepted Answer

70

Answer

60

Answer

55

Answer

58

Question 38

The diagram below shows the path of a cannonball after it is fired from a cannon. It also shows four arrows around the cannonball. Which arrow represents the direction of the force of gravity acting on the cannonball?

Accepted Answer

the yellow arrow

Answer

the green arrow

Answer

the red arrow

Answer

the blue arrow

Question 39

Using a ramp can make it easier to lift a heavy object up to a certain height. How does a ramp do this?

Accepted Answer

by increasing the distance over which the input force is applied

Answer

by increasing the amount of input force needed to lift the object

Answer

by reducing the distance over which the input force is applied

Answer

by reducing the weight of the object

Question 40

Jase is trying to lift a heavy object a height of 2 feet. He is planning to use a ramp to help him lift the object. Which ramp below should Jase choose if he wants to lift the object using the least force?

Accepted Answer

Question 41

A worker pushes on a box, but the box is too heavy so it does not move. This is shown in the picture. How could the worker make it easier to move the box?

Accepted Answer

place the box on a cart with wheels to decrease friction

Answer

place extra weight on top of the box

Answer

increase friction between the box and the floor

Answer

place the box on its side so more of it is touching the ground

Question 42

Mr. Garret is pulling Ike in a wagon. As Mr. Garret walks to the left, a force pulls on Ike's wagon. What will the direction of Ike's motion be?

Accepted Answer

to the left

Answer

up into the air

Answer

down into the ground

Answer

around in a circle

2024 Simple Machines Unit Test Review

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