Electromagnets

The relationship between electricity and magnetism is called

• electrical energy.
• induced current.
• electromagnetism.
• ferromagnetism.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

• Add more coils of wire to the nail.
• Use a smaller battery.
• Reverse the poles of the magnet.
• Remove all the coils and the nail.

Tags

NGSS.MS-PS2-3

Surrounding every magnet is a(n) __________  __________.

• magnetic field
• electrical current
• smaller magnet
• funny saying

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What kind of magnet can be turned on and off?

• a refrigerator magnet
• an electromagnet
• magnetite
• iron

Tags

NGSS.MS-PS2-3

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

When magnetic field lines are drawn, how do they look?

• straight lines
• criss-crossed lines like X's
• curved lines from N to S pole and outwards
• lines extending outward in all directions like drawing the Sun

Which will make an electromagnet WEAKER?

• more coils of wire around nail
• an extra battery attached
• thicker wire
• remove one of the nails from the coils

Tags

NGSS.MS-PS2-3

What happens to the strength of a magnetic field as you move away from the magnet?

• The strength of the magnetic field increases.

• The strength of the magnetic field doesn't change.

• The strength of the magnetic field is doubled.

• The strength of the magnetic field decreases.

Tags

NGSS.MS-PS2-3

Which of the following is not a good conductor?

• Copper

• Silver

• Aluminum

• Plastic

Tags

NGSS.5-PS1-3