Circuits & Magnetism

How do the two poles of a magnet interact with each other?

• They make a spark

• Nothing happens

• They only attract

• They attract or repel each other

Tags

NGSS.MS-PS2-3

Why does a compass needle always point north?

• Due to the gravitational pull of the North Pole.

• Earth's magnetic field is aligned with the geographic north.

• It is attracted to the gravitational pull of the moon

• There's no reason, it just does

Can a rubber band be picked up by a magnet?

• Yes!

• No

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which one of these is an insulator?

• Copper

• Iron

• Rubber

• Pencil lead

Electricity is made by the movement of

• protons

• neutrons

• electrons

• atoms

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Electromagnets lose their magnetic properties when the current is turned off

• true

• false

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What is the difference between a series circuit and a parallel circuit?

• Series circuits have 1 path, parallel have no paths for electrons

• series circuits have 1 path, parallel circuits have more than 1 path for electrons

• there is no difference

• Both series and parallel circuits have only one path for the flow of electricity.

How does electricity flow in a circuit?

• Electricity flows from the positive to negative ends

• Electricity flows from the middle of the circuit outward
• Electricity flows in both directions at the same time

• it flows from negative to positive ends

What does the switch in a circuit do?

• gives the circuit more electrons

• it makes a short circuit

• it opens and closes the circuit

• it's just a decoration

A resistor in an electric circuit is used to limit or control the flow of electric current.

• True

• False