magnetism

Two like poles are held far apart within each other's force field. Which statements are TRUE? SELECT ALL THAT APPLY.

• The poles will repel when released

• The poles will attract when released

• The poles have high PE before being released

• The poles have low PE before being released

Tags

NGSS.MS-PS2-5

NGSS.MS-PS3-2

Two like poles are held close to one another within each other's force field. Which statements are TRUE? SELECT ALL THAT APPLY.

• The poles will repel when released

• The poles will attract when released

• The poles have high PE before being released

• The poles have low PE before being released

Tags

NGSS.MS-PS2-3

A _________________________ is the invisible force that surrounds a magnet.

• bar magnet

• a gravitational force

• a magnetic field

• gravity

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What do we use electromagnets for?

• Car engines

• Generators

• Speakers

• All of these!

Tags

NGSS.MS-PS2-3

Although magnetic fields are _____________, one common way that people investigate them is to use ________ filings.

• invisible, iron

• touchable, iron

• invisible, plastic

• touchable, plastic

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following will not make an electromagnet stronger?

• a stronger current in the wire

• more loops of wire

• a switch

• wrapping the wire around an object made of iron

Tags

NGSS.MS-PS2-3

Why does a compass point north?

• Because of the North Star.

• Because the magnet inside is following Santa

• The magnet inside lines up with the Earth's north and couth poles.

• The rotation of the Earth.

A device that uses a free-moving magnetic needle to show direction is a:

• lodestone
• magnet
• compass
• magnetic field

Which two metals will be attracted by a magnet?

• Copper and cobalt

• Aluminum and lead

• Iron and steel

• Gold and silver

Tags

NGSS.MS-PS2-3

Which of the following will reduce the strength of a magnetic field around a solenoid?

• add more coils

• take away coils

• add voltage

• put an iron core in the solenoid

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5