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Electricity And Magnetism 2
Test Description: Second part of Electricity and Magnetism Test for 8th grade.
Instructions: Answer all questions to get your test result.
1) What do we call the points on a magnet that have opposite magnetic qualities?
A
magnetic field lines
B
magnetic poles
C
magnetic force
D
electric current
2) Which of the following is NOT the behavior of magnets?
A
North pole attracted to North pole
B
They are all correct
C
South pole attracted to North pole
D
South pole repeled by South pole
3) What are groups of atoms in tiny areas found in iron, nickel, and cobalt called (tiny magnets of different sizes in an object)?
A
electrons
B
protons
C
neutrons
D
domains
4) Which of the following is NOT a way that a magnet can lose its magnetic properties?
A
cool down the magnet
B
heat up the magnet
C
drop or hit the magnet
D
put the magnet in a strong magnetic field that is opposite to its own
5) What happens when you cut a magnet in half?
A
You have two magnets
B
The magnet is ruined
C
You have one north-pole piece
D
You have one north-pole and one south-pole piece
6) How do you make a metal object such as a nail into a magnet?
A
You rub it back and forth with one pole of a magnet
B
You rub it in one direction with one pole of a magnet
C
You heat it at a high temperature
D
You rub it at the center of the magnet
7) Why are some objects magnetic and others are not?
A
Everything is magnetic if given enough of an electric charge.
B
Objects that aren’t magnetic don’t have north and south poles.
C
The domains of objects that are not magnetic line up, while the magnetic fields of magnetic objec
D
The domains of magnetic objects line up, while the magnetic fields cancel each other out in objec
8) Why does a compass needle move when it is near a wire with an electric current
A
The electric current flows into the compass needle.
B
The electric current creates a magnetic field.
C
The compass needle induces an electric current.
D
The compass needle needs an energy source.
9) What is the interaction between electricity and magnetism?
A
Alternating current
B
Direct current
C
Magnetricity
D
Electromagnetism
10) What happens when you move a magnet through a coil of wire?
A
An electromagnet is created.
B
A series circuit is created.
C
A magnetic force is induced.
D
An electric current is induced.
*select an answer for all questions
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