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Vocabulary
Magnets
Electromagnets
Magnetic Effects
Misc.
100
A force that acts on moving electric charges and on magnetic materials that are near a magnet.
Magnetism
100
Can you ever have one magnetic pole without the other?
No.
100
What makes an electromagnet? A coil of wire or straight wire?
Coiled wire.
100
What object's needle always moves to point north and south?
A compass.
100
Which can become an induced magnet; a paperclip, rubber, or a magnet?
Paperclip
200
What are the two ends of a magnet?
Magnetic poles- North and South
200
Where is the magnetic field strongest?
At the magnetic poles.
200
Name a sound device that uses electromagnets.
Speakers and earphones.
200
What happens when a magnetic north pole and a magnetic south pole are near each other?
They attract.
200
True or False? The Earth's magnetic poles match its north pole and south pole?
False
300
The space around a magnet in which magnetic forces operate?
Magnetic field.
300
What lifts and propels a maglav train?
Magnetic force.
300
What electromagnet is able to observe organs and tissues inside a body without cutting into the body?
What is a Magnetic Resonance Imaging (MRI).
300
What causes the compass needle to move?
Earth's magnetic field.
300
A coil of wire without an iron core is called...
A solenoid
400
A coil of wire with many loops around an iron core
An electromagnet.
400
If a magnet breaks in half, what happens to the broken edges?
Becomes magnetic poles.
400
Name two ways to increase the strength of an electromagnet.
What is using an iron or steel bar, thicker bar, add more coils, stronger battery, or more batteries.
400
What causes Earth to be a magnet?
The outer core that is made up of iron.
400
How are electric current and magnetic fields related?
Electric currents produces a magnetic field, and magnets in motion produce electricity.
500
A machine that uses moving magnets to produce electrical energy in a power station?
A generator.
500
Describe how magnetic poles behave.
What is opposite attract and like/same repel.
500
How is an electromagnet made?
What is by wrapping/coiling wire around a bar and attaching the wire to a battery.
500
You are walking through the forest using a compass and the needle moves away from point northward. What caused the needle to move?
A magnetic rock.
500
Draw the shape of the magnetic field around a bar magnet
Loops and north to south arrows