Off the Grid Unit: Pre-Assessment

Which of the following factors can affect the strength of an electric force between two charged objects?

• The color of the objects

• The distance between the objects

• The shape of the objects

• The material of the objects

Tags

NGSS.MS-PS2-3

What is the primary factor that affects the strength of a magnetic force between two magnets?

• The temperature of the environment

• The distance between the magnets

• The color of the magnets

• The size of the magnets

Tags

NGSS.MS-PS2-3

Which of the following investigations would best demonstrate that fields exist between objects exerting forces on each other even though they are not in contact?

• Observing a magnet attracting a paperclip through a piece of paper

• Measuring the temperature change of a heated object

• Weighing two objects on a scale

• Observing the color change of a chemical reaction

Tags

NGSS.MS-PS2-5

In an experiment, a student places a charged balloon near small pieces of paper. The pieces of paper move towards the balloon. What does this demonstrate?

• The balloon is heavier than the paper

• There is a field between the balloon and the paper

• The paper is magnetic

• The balloon is made of rubber

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A graph shows the relationship between the speed of an object and its kinetic energy. If the speed of the object doubles, what happens to its kinetic energy?

• It remains the same

• It doubles

• It triples

• It quadruples

Tags

NGSS.MS-PS3-1

A graph displays the kinetic energy of a car as its mass increases. What can be inferred from the graph if the speed remains constant?

• Kinetic energy decreases as mass increases

• Kinetic energy remains constant as mass increases

• Kinetic energy increases as mass increases

• Kinetic energy is not affected by mass

Tags

NGSS.MS-PS3-1

Which model best describes the change in potential energy when two magnets are moved closer together?

• Potential energy increases

• Potential energy decreases

• Potential energy remains the same

• Potential energy is not affected by distance

Tags

NGSS.MS-PS3-2

When a spring is compressed, what happens to the potential energy stored in the spring?

• It decreases

• It increases

• It remains the same

• It is converted to kinetic energy

A ball is dropped from a height and hits the ground. What happens to its kinetic energy just before it hits the ground?

• It is transferred to potential energy

• It is transferred to the ground

• It remains constant

• It is lost

Tags

NGSS.MS-PS3-5

When a moving car comes to a stop, what happens to its kinetic energy?

• It is destroyed

• It is transferred to the brakes as heat

• It remains in the car

• It is converted to potential energy

Tags

NGSS.MS-PS3-5