Electricity, Magnetism, Electromagnetism, and Applications

What causes an object to be magnetized?

• made of metal

• atoms are aligned

• atoms point every direction

Here is a simple electromagnet. How could you make the magnetic field STRONGER?

• Add more coils of wire around the nail

• Use a smaller battery

• Reverse the flow of electricity

• Decrease the coils in the solenoid

EVERY magnet is surrounded by ____________________.

• an invisible magnetic field

• an electrical current

• a solenoid

What kind of magnet can be turned on and off?

• a refrigerator magnet

• an electromagnet

• magnetite (found in nature)

• a permanent magnet

When two magnetic North poles are brought close to each other, they will

• attract

• repel

• create static electricity

• cancel each other out

When two magnetic South poles are brought close to each other, they will

• attract
• repel
• create sparks
• cancel each other out

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

When a magnetic South pole is brought close to a magnetic North pole, the magnets will

• attract
• repel
• create sparks
• cancel each other out

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following is NOT magnetic?

• aluminum

• iron

• cobalt

• nickel

In the diagram, an electric motor is pictured. The purpose of an electric motor is

• to create electricity (using a magnet)

• to create motion (using electricity)

• to create a magnet (using motion)

A magnetic pole is the location on a magnet where the magnetic field is the..

• Strongest

• Weakest