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Magnets
Test Description: Magnets
Instructions: Answer all questions to get your test result.
1) The Earth's Magnetic Field is ___________
A
very small and weak
B
Very small, but strong
C
Very Big, but weak
D
Very Strong
2) An electromagnet ___________________.
A
can be produced without electricity
B
can be turned off and on
C
is not as strong as the Earth's magnetic field
D
all of the above
3) North and north will ____________
A
both repel and attract
B
attract
C
repel
D
none of the above
4) Which of the following describes the domains of something magnetic?
A
the domains are all pointing different directions
B
the domains are lined up (pointing the same direction)
C
none of the above
D
the domains are very large and rotate in circles
5) Which of the following will not increase the strength of an electromagnet?
A
using a longer nail
B
adding more coils of wire around the nail
C
using a nail with a larger diameter
D
using a larger (more powerful) battery
6) Which of the following does not describe the magnetic field of Earth?
A
It is very strong.
B
It protects the Earth from radiation.
C
It can be reversed.
D
It is symmetrical.
7) The magnetic field of Earth is opposite of the Geographic poles.
A
FALSE
B
TRUE
8) Which of the following will increase the strength of an electromagnet?
A
using a smaller battery
B
adding more coils around the iron core (nail)
C
using a dead battery
D
using blue wire instead of white
9) Pick the following statement that is FALSE
A
Magnetic Field Lines travel from the North pole to the South.
B
Electromagnets CANNOT be turned off
C
Adding more coils to an electromagnet will increase its strength.
D
The poles of a magnet are the strongest parts.
10) Pick the following statement that is FALSE
A
The Earth's magnetic field looks similar to a bar magnet's field.
B
The poles of a Magnet are the Strongest Parts
C
The Earth's Magnetic Field has never reversed and will never reverse.
D
An electromagnet can be turned ON and OFF.
*select an answer for all questions
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