Electromagnets

This type of magnet is a temporary magnet.

• 
• 
• both

Tags

NGSS.MS-PS2-3

In order to make an electromagnet stronger you __________.

• take away one power source

• wrap the wire around the rivet less times

• wrap the wire around the rivet more times

• wrap the wire around the rivet looser

Tags

NGSS.MS-PS2-3

Which rule explains why you would not use a brass rivet to make an electromagnet?

• opposites poles attract
• only iron and steel can become magnetized
• electricity flows from positive to negative
• metals conduct electricity

Tags

NGSS.MS-PS2-3

Bob made an electromagnet but it was very weak.  How can he make it stronger?

• take away a d-cell
• wrap the wire loosely
• use thicker wire
• use less winds

Tags

NGSS.MS-PS2-3

Which component controls the flow of electricity by opening and closing the circuit?

• switch
• d cell
• wire coil
• core

Which component provides the stored energy to run the electromagnet?

• d cell
• core
• coil
• wire

You are making an electromagnet and can choose from a copper, iron or steel rivet.  Which sentence is true?

• You can use all of them because they are all made of metal
• You can use either iron or steel.
• You can only use the iron rivet.
• You can only use the copper rivet.

Tags

NGSS.MS-PS2-3

What is the role of the battery in the electromagnet?

• It provides light energy for the electromagnet.

• It provides magnetic field for the electromagnet.

• It provides sound energy for the electromagnet.

• It provides the power source for the electromagnet.

How can we control an electromagnet?

• By turning the electricity on and off.

• By turning the kinetic energy on and off.

Tags

NGSS.MS-PS2-3

What type of magnet that can turned on and off?

• electromagnet

• permanent magnet

• electricity

• battery