Electricity, Magnetism and Electromagnets

Quiz
•
Science
•
8th Grade
•
Hard
+1
Standards-aligned
Charles Martinez
FREE Resource
25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Candice learns that all magnets have two magnetic poles. Which of the following observations would best support this statement?
When a bar magnet is cut in half, each half has a north and south pole.
The north pole of a compass needle is attracted to the south pole of a bar magnet.
When an electric current flows through a wire, a magnetic field forms around the wire.
The strength of a horseshoe magnet's magnetic field decreases as the magnet is pulled away from another object.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During a lightning storm, the bottom of a cloud gains a strong negative electric charge. If you were to measure the charge at the top of a tall metal pole directly under the cloud, what would you expect to observe?
The top of the pole would have a positive charge
The top of the pole would have no charge
The top of the pole would have a negative charge
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a permanent magnet?
Has magnetic properties for a long time
is magnetized by an electric current
is not magnetized
does not have a north or south pole
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
. Which of the following best describes a ferromagnetic material?
A material that easily conducts electricity
A material that produces its own magnetic field
A material with naturally strong magnetic properties
A material made of non-metals that produce magnetic fields
Tags
NGSS.MS-PS2-3
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following best describes a magnetic field?
a measure of the length of a magnet
the force that pushes two magnets away from each other
an invisible region that surrounds the north pole of a magnet
a region around a magnet in which you can measure magnetic forces
Tags
NGSS.MS-PS2-5
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is the best definition of electromagnetism?
The use of electrical energy to create magnets
the use of magnets to generate electric currents
the interaction between electrical energy and magnetism
the appearance in nature of objects that have both electric and magnetic fields
Tags
NGSS.HS-PS2-5
NGSS.HS-PS4-3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Joe has an idea to cut a bar magnet in half so that he can have one magnet with a north pole and one magnet with a south pole. What is wrong with this idea?
It is impossible to cut a magnet in half.
It is impossible to separate two opposite magnetic poles once they are in contact with each other.
It is impossible to create a magnet with only one magnetic pole.
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