Electromagnetism

Study the diagram of an electromagnet. Identify what each component does in the circuit. 1. Has potential energy to run the circuit

• A

• E

• C

• F

Tags

NGSS.MS-PS2-3

2.Controls the flow of electricity by opening and closing the circuit

• B

• C

• E

• A

Tags

NGSS.MS-ETS1-1

3.Becomes a temporary magnet

• B

• C

• E

• A

Tags

NGSS.MS-PS2-3

4.Provides the pathway to carry the electricity from component to component

• A

• E

• C

• F

Tags

NGSS.MS-ETS1-1

. Put a check next to each statement that describes evidence that electricity is flowing:

• A component gets hot.

• A motor in a circuit is not moving.

• The switch is closed.

• A lightbulb shines.

Which circuit will light the bulb?

• 
• 
• 
• 

What is the energy source in this circuits?

• The bulb fillament

• The bulb casing

• The wire

• The D-cell (battery

A student set a compass on top of a wire not yet connected in a circuit. When she connected the wire to the positive side of the D-cell, the compass needle moved. Why did the compass needle change position when the circuit was closed?

• When the circuit is complete, electricity also runs through the compass

• A magnetic field surrounds a wire when electric current flows through it

• The compass-needle change indicates the potential energy in the D-cell

• The magnetic poles of the D-cell reversed, causing the compass needle to move

Tags

NGSS.MS-PS2-3

Check each statement that describes where electricity

flows in an electromagnet.

• Electricity flows through the rivet (core).

• Electricity flows through the plastic insulation on the wire

• Electricity flows through the switch when it is closed

• Electricity flows through the wire wrapped around the core.

The graph shows the results of an investigation with an electromagnet. What pattern does the data show?

• The thinner the wire, the fewer nails lifted.

• The thicker the wire, the fewer nails lifted

• The thinner the wire, the fewer washers lifted

• The gauge of the wire does not affect how many nails can be picked up.