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Magnet, Electromagnet, and Electricity Safety
By Lori Matthews
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Last updated almost 6 years ago
17 questions
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Question 1
1.
What is the force that attracts metal to other metals called?
electricity
nuclear
magnetism
gravity
Question 2
2.
What is the region around a magnet where it’s magnetism acts known as?
iron core
south pole
north pole
magnetic field
Question 3
3.
What happens when two north poles of magnets are placed together?
They repel.
They attract.
The strength of the magnet is doubled.
They create an electric current.
Question 4
4.
Which of these metals are NOT attracted to a magnet?
nickel
rock
cobalt
iron
Question 5
5.
What characteristics do magnetic substances have?
They can be very heavy.
They are always black and cold to the touch.
They fall faster than other objects when you drop them.
They can push or pull objects they are not touching.
Question 6
6.
Earth's magnetic field and bar magnets both attract particles to the same
location. Where are they?
All around the outside.
The North and South poles.
The middle.
First to the middle, then to the ends.
Question 7
7.
What is an electromagnet?
Question 8
8.
What must happen for an electromagnet to have a magnetic field?
It must be heated.
It has to be touching another magnet.
It must be connected to an electrical source.
It must be lined up with Earth’s magnetic field.
Question 9
9.
Sam was shown four objects, one of which did not contain an electromagnet. Which should be selected as the one that does NOT contain a magnet?
hair dryer
headphones
doorbells
wind up clock
Question 10
10.
What scientist is credited with discovering that a magnetic field was produced by the flow of electric current?
Albert Einstein
Hans Orsted
Nikola Tesla
Thomas Edison
Question 11
11.
How can an electromagnet be made stronger?
Increase the voltage.
Add an iron core.
Add more coils of wire.
All the above.
Question 12
12.
What causes an electromagnet to create a magnetic field?
The poles are attracted to each other.
The iron is wrapped with a coiled wire.
There is a current flowing through the wire.
The Earth’s magnetic field.
Question 13
13.
It’s safe to use electrical devices with frayed or broken cords.
True
False
Question 14
14.
Never stick your finger or any object into an electrical outlet.
True
False
Question 15
15.
Never use an electrical device near or touching water.
True
False
Question 16
16.
It’s ok to plug many devices into wall outlets and power
True
False
Question 17
17.
What is one way to stay safe around electricity?