WorksheetsMagnetism Review
Total questions: 25
Worksheet time: 44mins
Name
Class
Date
1.
Earth acts like a giant magnet because its center is made up MOSTLY of
a)
granite
b)
limestone
c)
iron
d)
nickel
2.
Where is the strongest attraction force of the magnet?
a)
at the poles
b)
in the middle
c)
above the magnet
d)
below the magnet
3.
Magnetism is generated by moving
a)
protons.
b)
electrons.
c)
neutrons.
d)
elements.
4.
As the distance between two magnets increases (they get farther apart), the force between them:
a)
Increases
b)
Decreases
c)
Stays the Same
5.
If you cut a magnet in half, what happens to the poles?
a)
One half gets the North Pole, the other half gets the South Pole
b)
Both halves get only a North Pole
c)
Both halves get only a South Pole
d)
Both halves get a North pole and a South Pole
6.
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
7.
What kind of magnet can be turned on and off?
a)
refridgerator magnet
b)
electromagnet
c)
magnetite
d)
iron
8.
The two poles on a magnet are
a)
north and east
b)
north and west
c)
south and north
d)
south and west
9.
Electricity can be used to create a magnet
a)
True
b)
False
10.
You can make an electromagnet stronger by...
a)
increasing the current through the wire
b)
make the iron core bigger
c)
increase the number of loops around the core
d)
All of these
11.
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
12.
Iron, Nickel and cobalt are all __________________ materials
a)
Shiny
b)
poles
c)
magnetic
d)
cold
13.
True or False: All metals are attracted to magnet.
a)
True
b)
False
14.
A device that uses a free-moving magnetic needle to show direction is a:
a)
Ruler
b)
magnet
c)
compass
d)
magnetic field
15.
How is a permanent magnet DIFFERENT from a temporary magnet?
a)
A permanent magnet attracts materials made of iron.
b)
A permanent magnet has poles.
c)
A permanent magnet has a magnetic field.
d)
A permanent magnet keeps its magnetism for a long time.
16.
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
17.
What do the lines around this magnet represent?
a)
North Pole
b)
South Pole
c)
Magnetic Declination
d)
Magnetic Field
18.
In un-magnetized materials the domains are __________ aligned.
a)
super
b)
slightly
c)
randomly
d)
always
19.
Electric motors are devices that convert _____ energy into _____ energy.
a)
electrical; mechanical
b)
mechanical; electrical
c)
chemical; potential
d)
mechanical; kinetic
20.
Region around a magnet in which magnetic force can act.
a)
Magnetic field
b)
Magnetic force
c)
Domain
d)
Perimeter
21.
A simple electromagnet can be made with which of the following?
a)
an electric current
b)
a turbine and nail
c)
a nail, a wire, and a battery
d)
a compass and a battery
22.
Magnets stick to any materials that are made of
a)
Iron, Nickel, Copper
b)
Iron, Nickel, Cobalt
c)
Ions, Nickel, Cobalt
d)
Iron, Lead, Cobalt
23.
An electromagnet's poles may be reversed by:
a)
decreasing the voltage of the coil
b)
increasing the number of coils
c)
changing the direction of current flow
d)
altering the material used to make the coils
24.
How can a wire become magnetic?
a)
point it north
b)
add a resistor
c)
heat it up
d)
run a current through it
25.
The direction of a magnetic field around a current carrying wire is:
a)
circular around the wire
b)
in the same direction as current flow
c)
opposite to the direction of current flow
d)
there is no magnetic field in the wire
100 %
