Physical Science

Chapter 8: Magnetism and Its Uses

Section 1 Self-Check Quiz-Eng.

1.
The interaction between two magnets is called __________ .
A)magnetic force
B)a magnetic field
C)polarity
D)current
2.
The magnetic field that surrounds a magnet exerts __________ .
A)electrical current
B)the magnetic force
C)air pressure
D)resistance
3.
The __________ are regions where the magnetic force exerted by a magnet is strongest.
A)magnetic field lines
B)anodes
C)magnetic poles
D)cathodes
4.
Which of the following is found in all magnets?
A)a geographic pole
B)a transformer
C)a north pole and a south pole
D)an electrical field
5.
North poles of magnets always attract __________ .
A)south poles
B)other north poles
C)negative charges
D)positive charges
6.
Which of the following elements is magnetic?
A)aluminum
B)iron
C)tin
D)lead
7.
Groups of atoms with aligned magnetic poles are called __________ .
A)magnetic domains
B)magnetic fields
C)elements
D)permanent magnets
8.
When a bar magnet is broken into two pieces, each piece has a north and south pole because __________.
A)every magnet is made of many aligned smaller magnets
B)the magnetic fields reversed
C)the magnetic poles have been isolated
D)bar magnets are permanent magnets
9.
Why does the north pole of a compass point toward Earth's geographic north pole?
A)Earth's geographic north pole is a south magnetic pole.
B)Like poles attract.
C)A compass does not rely on Earth's magnetic field to function.
D)Opposite poles repel.
10.
Iron is a magnetic material, but an iron nail does not behave like a magnet because __________ .
A)its magnetic domains are aligned
B)it contains too few magnetic domains
C)its magnetic domains are arranged randomly
D)the atoms in the iron exert a force on all the other atoms
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