Fields and Forces

Based on the field lines, what pole is on the point marked X?

• East?

• South

• North

• Definitely west

At what point on this magnet would the magnetic field be strongest?

• A

• B

• C

• D

Tags

NGSS.MS-PS2-3

Which of the following would increase the strength of an electromagnet?

• increasing the insulation around the wire

• decreasing how much you yell at it

• decreasing the number of wire coils

• increasing the strength of the battery

Tags

NGSS.MS-PS2-3

A compass needle is a tiny magnet that can spin freely. Based on the image, what must be true about this compass needle? (select 2)

• The white part of the needle is a south pole.

• The white part of the needle is a north pole.

• The red part of the needle is a south pole.

• The red part of the needle is a north pole.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following is NOT a characteristic of a north pole?

• It is attracted to the south pole.

• It's the one with an "N" on it.

• The force arrows come FROM it

• It is repelled by the south pole.

Tags

NGSS.MS-PS2-3

Which of the following describes a permanent magnet?

• The domains are pointing in different directions.

• The domains are pointing in a similar direction.

• It has no domains.

• It must have an unequal number of domains.

Which of the following correctly describes magnetic (and electric!) interactions?

• Identical charges both attract and repel.

• Opposite charges both attract and repel.

• Opposite charges attract, identical charges repel.

• Opposite charges repel, identical charges attract.

Tags

NGSS.MS-PS2-3

The subatomic particles responsible for electricity and magnetism are called...

• electrons

• neutrons

• protons

• photons

As the electrical current in a wire increases, what will happen to the magnetic field it produces?

• It will decrease.

• It will increase.

• It will stay the same.

• It will proceed to the buffet line.

Tags

NGSS.HS-PS2-5

T/F: electromagnets can be turned on and off

• True

• False

• Bingo dino DNA!

Tags

NGSS.MS-PS2-3