Front

In a homemade electromagnet, what must you do to increase the number of paper clips their electromagnet picks up?

Back

Increase the number of loops of wire around the nail.

Front

Material for strongest electromagnet core to pick up nails: iron nail, water, wooden stake, plastic spoon.

Back

iron nail

Tags

NGSS.MS-ETS1-2

Front

You rub a balloon on your head and it becomes negatively charged. The balloon will be MOST attracted to ...

Back

positively charged hair.

Tags

NGSS.MS-PS2-3

Front

Which set of magnets correctly illustrates the attraction of unlike poles? Options: A, B, C, D

Back

C

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Front

This force is a pull between all objects. It is the force that gives us weight here on Earth. And, if we throw a rock off of a cliff, it is the force that causes the rock to fall to Earth. What is this force?

Back

Gravity

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Front

Which electromagnet would have the most strength?

Back

An electromagnet with 20 coils.

Tags

NGSS.MS-PS2-3

Front

Which change would result in a stronger electromagnet? Options: Reducing the number of batteries, Increasing the voltage of the battery, Substituting another metal for the iron core, Decreasing the number of coils around the iron core.

Back

Increasing the voltage of the battery

Front

Which set of magnets correctly illustrates the repulsion of like poles? Options: A, B, C, D

Back

B

Tags

NGSS.MS-PS2-3

Front

What could Braddy do to increase the strength of his electromagnet and pick up more thumbtacks?

Back

Use two batteries instead of one.

Front

How is an electromagnet different from a bar magnet?

Back

An electromagnet is temporary and is magnetic when a current flows through a wire wrapped around the core.