Force and Motion Unit Test Review

Abby is testing to see how the surface will affect the distance a toy car travels. She is using a small toy car and a long ramp. Abby puts different surfaces on the ramp, and then lets the car roll down the ramp. Then, she measures how far the car travels from the bottom of the ramp.

On which surface would the car roll the shortest distance?

• glass

• sand paper

• smooth flooring

• tile

Tags

NGSS.MS-PS2-2

Abby is testing to see how the surface will affect the distance a toy car travels. She is using a small toy car and a long ramp. Abby puts different surfaces on the ramp, and then lets the car roll down the ramp. Then, she measures how far the car travels from the bottom of the ramp.

What causes the car to slow and stop at a shorter distance at the bottom of the ramp?

• motion

• force

• friction

• pulley

Tags

NGSS.MS-PS2-2

Which of the following sentences best describe the forces in the picture?

• The forces are balanced because there is an equal amount of weight on each side of the level.

• The forces are unbalanced because there is an equal amount of weight on each side of the lever.

• The forces are balanced because there is NOT an equal amount of weight on each side of the lever.

• The forces are unbalanced because there is NOT an equal amount of weight on each sides of the lever.

Tags

NGSS.3-PS2-1

Which is NOT an example of the effect of gravity?

• Rivers flowing downhill.

• A basketball falling through a hoop.

• Dropping a pencil on the floor.

• An astronaut floating in outer space.

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS2-4

Pick two examples that show a balanced force on an object.

• A car moving.

• Kids beating the grown-ups in tug of war.

• A box that is not moving.

• A soccer ball sitting in a field of grass.

Two people are each pulling on the opposite ends of a rope. If they are pulling on the rope with equal forces, what will happen to the rope?

• It will stay in place between the two people.

• It will move toward the right.

• It will move toward the left.

• It will fall to the ground.

Tags

NGSS.MS-PS2-2

Which statement best describes what must happen in order for a person to lift an object?

• The force of gravity must be greater than the mass (weight) of the object.

• The mass (weight) of the object must be greater than the force of gravity.

• The force of gravity must be greater than the upward pull or push on the object.

• The upward pull or push on the object must be greater than the force of gravity.

Tags

NGSS.MS-PS2-4

Students were conducting an experiment using a catapult and a marble. They did 3 trials with the catapult on the floor. Then they placed it on two books and did 3 more trials. Finally, they placed the catapult on four books and did 3 more trials. What question best describes what they were testing?

• How does the height of a catapult affect the distance the marble travels?

• How do you measure the force of friction on a marble using a catapult?

• How does increasing the marble's mass affect the distance it travels?

• How does a marble's mass change as more force is used on it?

Tags

NGSS.MS-PS2-2

Which statement is true about all simple machines?

• They all lift things.

• They all have moving parts.

• They all make work easier.

• They all have just one part.

Sally wants to split a piece of wood. Identify which simple machine she should use to make her job easier?

• Inclined plane

• Pulley

• Wheel and axle

• Wedge