What subatomic particle causes magnetism in an atom?
protons
neutrons
electrons
nucleus
3. Multiple Choice
1 minute
1 pt
Which poles are attracted?
north and north
south and south
north and south
4. Multiple Choice
1 minute
1 pt
Which poles repel?
north and south
south and north
south and south
5. Multiple Choice
3 minutes
1 pt
Bob made an electromagnet but it was very weak. How can he make it stronger?
take away a d-cell
wrap the wire loosely
use thicker wire
use less winds
6. Multiple Choice
1 minute
1 pt
Which metals are attracted to magnets?
iron, nickel, cobalt
gold, silver, platinum
copper, magnesium, aluminum
7. Multiple Choice
1 minute
1 pt
Which is not a property of a magnet?
all magnets have two poles
all magnets have a force of attraction or repulsion
all magnets are surrounded by a magnetic field
all magnets can be turned off
8. Multiple Choice
1.5 minutes
1 pt
What items will a magnet attract?
Beach ball, glass
nails, paper clip
book, paper
golf ball, glue
9. Multiple Choice
1.5 minutes
1 pt
How is Earth's magnetic field similar to that of a magnet?
It's shaped like a horseshoe.
It has north and south poles.
It is made plastic.
It is hundreds of miles long.
10. Multiple Choice
30 seconds
1 pt
This substance is
magnetized
unmagnetized
positively charged
negatively charged
11. Multiple Choice
1 minute
1 pt
What will happen when these magnets are brought close together?
They will attract each other.
They will repel each other.
Both magnets will turn to the left
Both magnets will turn to the right
12. Multiple Choice
30 seconds
1 pt
Earth acts like a giant magnet because its center is made up MOSTLY of
granite
limestone
iron
nickel
13. Multiple Choice
30 seconds
1 pt
You know this substance is magnetized because
all the domains have right angles
the arrows are drawn in red
the domains are aligned
the domains are random
14. Multiple Choice
30 seconds
1 pt
Where are the magnetic force the strongest in this picture?
Location 1
Location 2
Location 3
Location 4
15. Multiple Choice
3 minutes
1 pt
_______________________ is the invisible force that flows through a magnet.
repel
copper
attraction
magnetism
16. Multiple Choice
3 minutes
1 pt
There are several modern uses of magnets. A ________________________ can have million of magnets. Each magnet points in its own direction, making a code. This allows an individual to make purchases.
Driver's License
Check Book
Credit Card
TV
17. Multiple Choice
3 minutes
1 pt
This large crane magnet functions only when the electrical current is ON. The crane magnet is an example of what type of magnet?
NIB Magnet
Ceramic Magnet
Electromagnet
funnel magnet
18. Multiple Choice
30 seconds
1 pt
In this image, matching north poles from two magnets are introduced. What do you predict will be the outcome?
There will be no interaction. The poles of magnets do not have an effect on one another.
The two north poles will attract each other
The two north poles will repel each other
The two magnets will combine and become one magnet
19. Multiple Choice
3 minutes
1 pt
How do magnets become weaker?
use less of them
smaller ones are always weaker
place them in different temperatures: hot vs cold
it is based on cost
20. Multiple Choice
30 seconds
1 pt
An electric current flows through a continuous loop known as a ____________.