Electricity, Magnetism and Electromagnetism

What kind of magnet can be turned on and off?

• a refrigerator magnet

• an electromagnet

• magnetite

• iron

Tags

NGSS.MS-PS2-3

The attraction or repulsion created by spinning electric charges is called -

•  electric generator

• magnetic force

•  solenoid

•  electromagnet

Tags

NGSS.MS-PS2-3

An electromagnet is a magnet that

• its strength can be varied and turned on and off

• always has a magnetic field around it

• has very little strength

_______ magnets have a North pole and a South pole.

• No

• Some

• All

• Broken

When two magnetic North 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 a magnet is able to move freely, its North pole will

• spin wildly

• point to the Earth's South pole

• point to the Earth's geographic North pole

• point to the Earth's magnetic North pole

Which of the following is NOT magnetic?

• zinc

• iron

• cobalt

• nickel

Tags

NGSS.MS-PS2-3

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

What are the ends of a magnet called?

• East and west poles

• Left and Right ends

• North and South ends

• North and South poles