Electric and magnetic forces review

The magnetic domains of a permanent magnet are arranged randomly

• True

• False

Tags

NGSS.MS-PS2-3

Because of the magnetic field, magnets do have to touch to affect each other.

• True

• False

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

When an object that is made of magnetic material but is not a magnet comes in contact with a magnet _____.

• its magnetic domains fall into alignment and it begins to repel other objects made of magnetic material

• its magnetic domains fall into alignment and it begins to attract other objects made of magnetic material

• its magnetic domains fall out of alignment and it begins to repel other objects made of magnetic material

• its magnetic domains fall out of alignment and it begins to attract other objects made of magnetic material

Tags

NGSS.MS-PS2-5

How can you make an item that is made of magnetic material become a permanent magnet instead of a temporary magnet?

• You can leave it in the magnetic field of an actual magnet for a long time.

• You can heat it while it is being influenced by a magnetic field.

• You can heat it and then cool it in a very strong magnetic field.

• You can do any of these things.

Tags

NGSS.MS-PS2-5

The region around a magnet where the magnetic forces act is the ____.

• electromagnetic pole

• magnetic domain

• magnetic field

• magnetic pole

Tags

NGSS.MS-PS2-5

A student holds a magnet 1 m from a paper clip and sees no evidence of a force acting between the two. When the student brings the magnet 1 cm away from the paper clip, the paper clip begins to slide toward the magnet. Which statement best explains these results?

• The material in the paper clip was not a magnetic material until the magnet was moved closer

• The magnet did not have a magnetic field until it was close to the paper clip.

• The paper clip repelled the magnet at the farther distance.

• The magnetic field of the magnet was too weak to move the paper clip at the farther distance.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A compass needle's magnetic north pole points towards which of the following?

• Earth's magnetic south pole

• Earth's magnetic north pole

• Earth's magnetic axis

• Earth's rotational axis

A compass needle acts as a(n)

Tags

NGSS.MS-PS2-5

A student wants to explore the potential energy stored in a system of two magnets.

Choose the action that would increase the potential energy of two magnets if like poles are used.

• Increase the distance between the magnets.

  (pull the magnets apart)

• Decrease the distance between the magnets.

  (push the magnets together)

Tags

NGSS.MS-PS3-2

A student wants to explore the potential energy stored in a system of two magnets.

Choose the action that would increase the potential energy of two magnets if unlike poles are used.

• Increase the distance between the magnets.

  (pull the magnets apart)

• Decrease the distance between the magnets.

  (push the magnets together)

Tags

NGSS.MS-PS3-2