Non-Contact Forces

Which of the following is a factor that can affect the strength of an electric force between two objects?

• The color of the objects

• The amount of electric charge on each object

• The shape of the objects

• The temperature of the room

Tags

NGSS.MS-PS2-3

What is the term for the region around a magnet where magnetic forces can be detected?

• Electric field

• Magnetic field

• Gravitational field

• Sound field

Tags

NGSS.MS-PS2-5

Which of the following best describes what happens when two like electric charges are brought close together?

• They attract each other

• They repel each other

• They combine into one charge

• They lose their charge

Tags

NGSS.MS-PS2-3

Which of the following is NOT helpful in detecting a magnetic field?

• A magnet

• A compass

• A metal object

• A ruler

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

If the distance between two charged objects is doubled, what happens to the electric force between them?

• It becomes stronger

• It becomes weaker

• It stays the same

• It doubles

Tags

NGSS.MS-PS2-3

A student places a paperclip near a bar magnet and observes that the paperclip moves toward the magnet. What does this demonstrate?

• The paperclip is electrically charged

• The magnet creates a magnetic field that exerts a force on the paperclip

• The paperclip is repelled by the magnet

• The magnet is losing its strength

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which change would increase the strength of the magnetic force between two magnets?

• Increasing the distance between them

• Decreasing the size of the magnets

• Bringing the magnets closer together

• Placing a piece of wood between them

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A student rubs a balloon on their hair and then brings it near small pieces of paper. The paper jumps toward the balloon. What does this experiment show?

• The balloon is magnetic

• The balloon has become electrically charged and exerts a force on the paper

• The paper is heavier than the balloon

• The balloon is losing air

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following investigations would best provide evidence that a magnetic field exists between two objects not in contact?

• Placing a piece of paper between two magnets and observing attraction

• Measuring the temperature between two magnets

• Painting the magnets different colors

• Weighing the magnets

Tags

NGSS.MS-PS2-5

A student wants to test how the amount of electric charge affects the strength of the force between two objects. Which variable should the student change in their experiment?

• The color of the objects

• The amount of electric charge on the objects

• The shape of the objects

• The type of table used

Tags

NGSS.MS-PS2-3