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WorksheetsMagnetic Forces Mini Lesson
Total questions: 22
Worksheet time: 11mins
Name
Class
Date
1.
What is the name of a magnet that stays magnetic only while it touches a permanent magnet, or one that is magnetic for a very short time
a)
Temporary magnet
b)
Permanant magnet
c)
Electromagnet
d)
Magnet
2.
The picture is an example of an:
a)
Electric circuit
b)
Electromagnet
c)
Electric nail
d)
Electric power cell
3.
what do magnets produce?
a)
attraction
b)
area of magnetic force called a magnetic field.
c)
a force against your hand
4.
what can be attracted to magnets?
a)
wood
b)
skin
c)
Metals such as iron, nickel and cobalt
5.
what is the earths magnetic field useful for
a)
deflecting the solar wind, charged particles that come from the Sun.
b)
wind
c)
sun
d)
light
6.
how are electromagnets created?
a)
forces
b)
light
c)
an electric current running through a surrounding coil. They have many uses including the generation of electricity in hydroelectric dams.
7.
What will happen when these magnets are brought close together?
a)
They will attract each other.
b)
They will repel each other.
c)
Both magnets will turn to the left
d)
Both magnets will turn to the right
8.
What characteristics do magnetic substances have?
a)
They can give you a "shock" when you touch them
b)
They can push or pull objects without touching them
c)
They are always black and cold to touch
d)
They fall faster than other objects when you drop them
9.
How is Earth's magnetic field similar to that of a magnet?
a)
It is hundreds of miles long
b)
It has north and south poles
c)
It is made in Earth's core
d)
It is shaped like a horseshoe
10.
What is our best evidence that Earth has a magnetic field?
a)
All things fall toward Earth's center
b)
A compass needle lines up with it
c)
Winds blow from east to west
d)
Earth's oceans all have currents
11.
Earth's magnetic field and a bar magnet attract particles to the same locations. Where are they?
a)
The middle
b)
All around the outside
c)
The north and south poles
d)
First to the middle, then to the ends
12.
Why does a compass needle point north?
a)
The compass is a bar magnet
b)
Because north is up
c)
Because it's magic
d)
It lines up with the Earth's magnetic field
13.
A magnet cannot not move which of the following objects?
a)
a paper clip
b)
a nail
c)
a toothpick
d)
a staple
14.
Earth acts like a giant magnet because its center is made up MOSTLY of
a)
granite
b)
limestone
c)
iron
d)
nickel
15.
Where is the force of attraction the strongest on a magnet?
a)
at the poles
b)
in the middle
c)
above the magnet
d)
below the magnet
16.
Spinning electrons themselves are small magnets.
a)
true
b)
false
17.
What is an electromagnet?
a)
a magnet that creates an electric current
b)
a magnet created by an electric current
c)
a magnet that has an electric charge
d)
an electric charge that is magnetic
18.
This substance is
a)
magnetizecd
b)
unmagnetized
c)
positively charged
d)
negatively charged
19.
You know this substance is magnetized because
a)
all the domains have right angles
b)
the arrows are drawn in red
c)
the domains are aligned
d)
the domains are random
20.
This is an example of a
a)
temporary magnet
b)
permanent magnet
c)
an ion
d)
an isotope
21.
To make this electromagnet stronger you could
a)
use less wire
b)
have fewer wire coils around the nail
c)
have more wire coils around the nail
d)
use a plastic core
22.
Where are the magnetic force the strongest in this picture?
a)
Location 1
b)
Location 2
c)
Location 3
d)
Location 4
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