Question 1

A coil of wire with an electric current in it

Accepted Answer

Solenoid

Question 2

Temporary magnet made by wrapping a wire coil carrying a current around an iron core

Accepted Answer

Electromagnet

Question 3

Increasing voltage/current and Increasing the number of coils

Accepted Answer

Ways of increasing the strength of an electromagnet

Answer

has no effect on the strength of the electromagnet

Answer

cause magnetic domains to become more randomly aligned

Answer

Ways of decreasing the strength of the electromagnet

Question 4

how can we turn this solenoid into an electromagnet

Accepted Answer

Adding an ferromagnetic core

Answer

It can't be done

Answer

Add more current

Answer

increase the number of coils

Question 5

The area of magnetic force around a magnet

Accepted Answer

Magnetic field

Question 6

To push apart, as like poles of two magnets push away each other.

Accepted Answer

Repel

Question 7

To pull toward one another, as opposite poles of two magnets pull toward one another.

Accepted Answer

Attract

Question 8

Region where the magnetic force of a magnet is strongest (North and South)

Accepted Answer

Poles

Question 9

Flow of electrons

Accepted Answer

Current

Question 10

The electrical pressure that causes the movement of electrons.

Accepted Answer

Voltage

Question 11

A magnet made of material that keeps its magnetism

Accepted Answer

Permanent magnet

Question 12

A series of loops that has been wound or gathered

Accepted Answer

Coil

Question 13

Iron, nickel, and cobalt are special because they are:

Accepted Answer

Ferromagnetic metals

Answer

Metals

Answer

Rare

Answer

Extremely cold

Question 14

The effect of passing a current through a wire

Accepted Answer

Heating

Question 15

A magnet in the form of a bar with magnetic poles at each end.

Accepted Answer

Bar magnet

Question 16

The direction a compass needle points (in the northern hemisphere)

Accepted Answer

Magnetic north

Question 17

A device with a magnetised needle that can spin freely; it will always points north.

Accepted Answer

Compass

Question 18

Magnetic lines of force from Earth's polar north and south, acting like a giant bar magnet.

Accepted Answer

Earths magnetic field

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