Magnet and Electromagnet

What will happen when these magnets are brought close together?

• They will attract each other.
• They will repel each other.
• Both magnets will turn to the left
• Both magnets will turn to the right

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which two of the following items are permanent magnets?

• electromagnet

• bar magnet

• metal detector

• electric motors

• fridge magnet

Which of these will block a magnetic field?

• air

• paper

• a hand

• none of these

Which of the following is a major difference between electromagnets and permanent magnets?

• Permanent magnets can be turned on and off, while electromagnets are always producing magnetic fields.

• Electromagnets can be turned on and off, while permanent magnets are always producing magnetic fields.

• Electromagnets are always stronger than permanent magnets.

• Permanent magnets are always larger than electromagnets.

Unlike an electromagnet, a permanent magnet

• does not need electricity to work.

• cannot lift heavy objects and release them.

• can easily increase or decrease its magnetic field.

• can shut down its magnetic field with the flip of a switch.

The strongest part of the magnetic field from a magnet is found at the

• farthest region from the magnet

• center of the magnet

• magnet's domains

• magnet's poles

You know this substance is magnetized because

• all the domains have right angles
• the arrows are drawn in red
• the domains are aligned
• the domains are random

Tags

NGSS.MS-PS2-3