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Magnetism Summative Review
Test Description: Use this activity to review for the Magnetism Summative Review
Instructions: Answer all questions to get your test result.
1) To cause two magnets to exert LESS force on each other, you would
A
make them dance
B
leave them alone
C
move them closer
D
move them farther away
2) Identify one way to DECREASE the strength of an electromagnet
A
Decrease the number of coils and increase the voltage of the battery.
B
Increase the number of coils and decrease the voltage of the battery.
C
Decrease the number of coils and the voltage of the battery
D
Increase the number of coils and the voltage of the battery.
3) A magnet that only works when there is an electric current flowing is called a(n)
A
incomplete magnet
B
partial magnet
C
permanent magnet
D
temporary magnet
4) Like poles
A
repel
B
attract
C
do nothing
D
jump around
5) Items that would be attracted to a magnet must contain
A
iron, cobalt or nickel
B
aluminum, iron or tin
C
gold, silver, or mercury
D
lions, tigers and bears (oh my)
6) The domains of a piece of metal that contains iron will do what when in a magnetic field?
A
align and produce poles in that piece of metal
B
become angry
C
nothing
D
begin pointing in all directions
7) What is the relationship between the strength of an electrical current field strength in an electromagnet?
A
as the current increases, the strength decreases
B
as the current increases, the strength increases
C
the strength of the current does not affect the field strength
D
as the current increases or decreases, the strength remains constant
8) Why does the north end of a compass needle point North?
A
The north pole is repelled by the earth's south pole
B
Its north pole is attracted to the earths magnetic south pole
C
It is repelled by the earth's magnetic field
D
There is no explanation for this insanity!!
9) Creating a magnet from a non-magnetized piece of metal is known as
A
magnetosphere
B
magnetization
C
magneticizing
D
magnetism
10) Compasses can be affected by current flowing through a wire because
A
the compass is attracted to the power source
B
the electric current produces a magnetic field
C
the compass is broken
D
the compass becomes confused
*select an answer for all questions
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