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Electricity Magnets Test
Test Description: God's Design for the Physical World.
Instructions: Answer all questions to get your test result.
1) Materials that are magnetic are called:
A
Diamagnetic
B
Ferromagnetic
C
Paramagnetic
2) Can some magnets produce a stronger magnetic field than others?
A
No
B
Yes
3) A coiled wire produces a weaker electromagnetic field than a straight wire.
A
False
B
True
4) The earth's magnetic north pole and geographical north pole are different
A
False
B
True
5) The earth's magnetic poles never change
A
False
B
True
6) What is happening to the earth's magnetic poles?
A
Increasing
B
Remaining the same
C
Decreasing
7) Electric motors convert current into:
A
Chemical energy
B
Thermal energy
C
Electrcity
D
Mechanical energy
8) Magnetic fields are used to store information on computer hard drives.
A
True
B
False
9) A magnetic field is generated when atoms are randomly arranged.
A
True
B
False
10) A magnets strength is
A
stronger near the poles
B
stronger in the middle
C
the same all over
11) Nearly all power plants use electromagnetism to produce electricity
A
False
B
True
12) Where does the aurora borealis occur?
A
Equator
B
North Pole
C
South Pole
13) The color of the aurora depends on the altitude that it occurs in
A
True
B
False
14) You are likely to see more auroras during a solar maximum.
A
True
B
False
15) The direction of the current through a wire does not affect the magnetic field.
A
False
B
True
16) Magnets can be used in:
A
Doorbells and Trains
B
All of the above
C
Hard drives and Videotapes
D
None of the above
17) Dr. James Van Allen discovered
A
the earth has a magnetic field
B
the polarity of the magnetic field is determined by the current's direction
C
current flowing through a wire generates a magnetic field
D
built the largest electromagnet in the world
18) Generators use magnetic energy to produce
A
Mechanical energy
B
Thermal energy
C
Electrcity
D
Chemical energy
19) Joseph Henry
A
discovered that polarity of magnetic field is determined by current's direction
B
the earth has a magnetic field
C
built the largest electromagnet in the world
D
current flowing through a wire generated a magnetic field
20) Hans Christian Oersted
A
discovered that polarity of a magnetic field is determined by current's direction
B
current flowing through a wire generated a magnetic field
C
the earth has a magnetic field
D
built the largest electromagnet in the world
*select an answer for all questions
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