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?

the magnetic force from Earth's North Pole

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?

Jon pushes the box with more force than Kyle.

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

Kyle and Jon both stop pushing the box.

Kyle pushes the box with more force than Jon.

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...

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

Kyle stops pushing the box, but Jon does not.

Kyle pushes the box with more force than Jon.

Jon pushes the box with more force than Kyle.

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?

Kyle pushes the box with more force than Jon.

Kyle and Jon both stop pushing the box.

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

Jon pushes the box with more force than Kyle.

Which of the following statements is true?

Balanced forces do not cause a change in motion.

Unbalanced forces do not cause a change in motion.

Balanced forces always cause a change in motion.

Gravity always causes a change in motion.

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?

upwards toward the hand of each boy

Which of the following examples BEST demonstrates balanced forces?

a basketball sitting on a table

a basketball flying through the air

a basketball rolling on the ground

a basketball bouncing on the ground

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?

The ring would move towards Eagle A.

The ring would move towards Eagle B.

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

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...

used the same amount of force as Eagle A.

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

The blue stickman is applying more force.

The red stickman is applying more force.

The force applied on the box is balanced.

They are both applying the same amount of force.

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

by changing the direction of the input force

by reducing the weight of objects

by reducing the amount of energy needed to perform a task

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

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

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

testing which surface is easier to slide a wooden block across

measuring the distance a toy car moves after it is pushed

Which statement is the best definition for gravity?

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

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

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

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

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?

The ball will begin to move to the right.

The ball will begin to move to the left.

The ball will move in a zigzag pattern.

Choose the THREE sentences that demonstrate balanced forces.

a boy who can't push a heavy cart.

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.

Person B is applying more force than Person A.

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

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

Person A is applying more force than Person B.

The create will move the right, toward Person B.

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

Scout C raises the flag on a flagpole.

Scout A pries open a can of fruit for breakfast.

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

Scout D trims hedges with hedge clippers.

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

by increasing the distance over which the input force is applied

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

by reducing the distance over which the input force is applied

by reducing the weight of the object

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?

place the box on a cart with wheels to decrease friction

place extra weight on top of the box

increase friction between the box and the floor

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

2024 Simple Machines Unit Test Review

Authored by Kelly Purser Smith

Science

4th Grade

NGSS covered

Used 8+ times

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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?

pulley

lever

wheel and axle

screw

Tags

NGSS.MS-PS2-2

MULTIPLE SELECT QUESTION

1 min • 3 pts

Select the THREE examples of a screw.

MULTIPLE SELECT QUESTION

1 min • 3 pts

Select the THREE examples of a pulley.

Tags

NGSS.MS-PS2-2

MULTIPLE SELECT QUESTION

1 min • 3 pts

Select the THREE examples of a wheel and axle.

Tags

NGSS.MS-PS2-1

MULTIPLE SELECT QUESTION

1 min • 3 pts

Select the THREE examples of a wedge.

MULTIPLE SELECT QUESTION

1 min • 3 pts

Select the THREE examples of a lever.

MULTIPLE SELECT QUESTION

1 min • 3 pts

Select the THREE examples of an inclined plane.

Tags

NGSS.MS-PS2-1

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2024 Simple Machines Unit Test Review

Select the THREE examples of a screw.

Select the THREE examples of a pulley.

Select the THREE examples of a wheel and axle.

Select the THREE examples of a wedge.

Select the THREE examples of a lever.

Select the THREE examples of an inclined plane.

Which type of simple machine is a baseball bat?

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?

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?

Access all questions and much more by creating a free account

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