Magnetism Notes

Multiple Choice

Fill in the blank: A _______ is the invisible region around a magnet where magnetic forces are exerted.

• magnetic field

• electromagnetic field

• electric field

• force field

Multiple Choice

What will happen to the 2 magnets if they are released?

• attract

• repel

Multiple Choice

Which substance would be attracted to a magnet?

• Silver

• Gold

• Iron

• Lead

Multiple Choice

The magnetic ____________ around a bar magnet is shown above.

• legs

• flowers

• field

• direction

Multiple Choice

Magnetism is a force of ____________________________ that occurs between two _____________ objects.

• attraction or repulsion, magnetic

• external or internal, magnetic

• external or repulsion, electronic

• attraction or internal, electronic

Multiple Choice

The Earth produces its own ________ field.

• spectrum

• electric

• magnetic

• progressive

Multiple Choice

A compass points toward the south pole of Earth's magnetic field, located near the Earth's geographical ________.

• north

• south

• east

• west

Multiple Choice

Every magnet has both a _________ pole and a __________ pole.

• North, South

• East, West

• Positive, Negative

• Positive, South

Multiple Choice

What device is made of coils of wire with an electrical current passing through it in order to generate a magnetic field?  

• Electromagnet 

• Generator

• Electron Magnet 

• Magneto's Helmet

Labelling

Drag the terms to the correct area on the image:

Drag labels to their correct position on the image

Battery

Wire

Iron Core

Magnetic Field

Multiple Choice

Which part of the electromagnets turned into a magnet when electricity flows through a coiled wire?

• Battery

• Copper wire

• Iron Nail

• Bulb

Multiple Choice

What would happen if you took one end of the wire off the battery?

• The nail will be a magnet.

• The nail would no longer be a magnet

• Nothing will happened.

• The nail will heats up.

Multiple Choice

What is the name of this device?

• electric circuit

• generator

• electromagnet

• electric motor

Multiple Choice

electric generators converts mechanical force into

• mechanical energy

• magmatism

• electric current

• electric energy

Multiple Choice

How do an electric motor and electric generator differ?

• one uses a permanent magnet, while the other uses temporary magnets

• one produces electrical energy, while the other produces thermal energy

• one contains moving parts, while the other has only parts that do not move

• one uses an electric current to produce motion, while the other uses motion to produce an electric current

Multiple Choice

A device that converts electrical energy into mechanical energy is called an

• electromagnet

• electric current

• electric generator

• electric motor

Multiple Choice

A device converts mechanical energy into electrical energy

• electromagnet

• electric current

• electric generator

• electric motor

Multiple Choice

What is one advantage of using electromagnets instead of permanent magnets?

• electromagnets are small

• electromagnets do not have poles

• permanent magnets last longer

• electromagnets can be turned on and off

Multiple Choice

What is the role of the generator in this system?

• It supplies the original energy source for the system.

• It converts the magnetism in the turbine into mechanical energy.

• It produces the electrical current using the mechanical energy of the turbine.

• It transmits the higher-voltage current throughout the power grid system.