Electromagnetism

What is responsible for creating a magnetic field around Earth?

• Earth's crust

• Earth's iron core

• Earth's mantle

• Earth's atmosphere

What happens if you cut a magnet in half?

• Nothing

• The magnets repel

• There will be two magnets

The picture above is an example of what?

• Magnetic field

• Electric field

• Repulsion

• Attraction

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What happens when an electric current flows through a wire?

• The wire begins to spin.

• Nothing happens.

• A field of gravity is created around the wire.

• A magnetic field is created around the wire.

What does this image show?

• Parallel circuit

• Series circuit

• Magnet

• Electromagnet

Tags

NGSS.MS-PS2-3

A _______________ is a current-carrying coil of wire with many loops.

• magnet

• electromagnet

• solenoid

• compass

This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

• Add more coils of wire to the nail.
• Use a smaller battery.
• Reverse the poles of the magnet.
• Remove all the coils and the nail.

Tags

NGSS.MS-ETS1-2

NGSS.MS-PS2-3

A compass needle responds to a magnetic field, because the compass needle is a

• A. generator.
• B. motor.   
• C. magnet.
• D. transformer.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A device that converts mechanical energy into electrical energy

• A. electric generator

• B. electric motor

• C. electromagnetic induction

• D. transformer

Which electromagnet is the strongest?

• 
• 
• 
•