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WorksheetsMagnetism
Total questions: 60
Worksheet time: 2hrs 40mins
Name
Class
Date
1.
Magnetic field lines can cross and eventually will cross at some point.
a)
True
b)
False
2.
The further you move the compass away from the magnet, it will stop pointing towards the north or south and will start pointing at random objects.
a)
True
b)
False
3.
Magnetic field lines decrease in strength the further you move away from a magnet.
a)
True
b)
False
4.
The experiment with the magnet and compass showed the magnetic field lines. Why do the lines not cross?
a)
The field lines did cross.
b)
The field lines are arranged from stronger to weaker where the stronger ones are closer to the magnet.
5.
If you are given a random sample of mixed materials and it does contain iron filings, which of the following would you use to remove the iron filings?
a)
A magnet
b)
Water
c)
A strainer or funnel
d)
A piece of wood
6.
When two magnets with opposite poles face each other, their magnetic fields...
a)
form two fields, which look like two distinct fields around each magnet
b)
form one field, which looks like a circle between the magnets
7.
When two magnets with like poles face each other, their magnetic fields...
a)
form two fields, which look like two distinct fields around each magnet
b)
form one field, which looks like a circle between the magnets
8.
How can you increase the strength of an electromagnet?
a)
Decrease the number of coils
b)
Increase the number of coils
9.
How can you increase the strength of an electromagnet?
a)
Add more batteries
b)
Subtract batteries
10.
Which of the following materials are required to make an electromagnet?
a)
A copper wire
b)
A copper core
c)
An iron wire
d)
A wood core
11.
Which of the following materials are required to make an electromagnet?
a)
A permanent magnet
b)
An iron wire
c)
An iron core
d)
Copper paperclips
12.
Where do electromagnets get their power?
a)
The Earth's magnetic field
b)
A permanent magnet
c)
The sun
d)
An electrical source (usually a battery)
13.
An electromagnet has a north and south pole, but what determines if the pole is north or south?
a)
The magnet will alternatively change between north an south poles
b)
The charge on the end of the battery
c)
An electromagnet does not have north or south poles
d)
How many batteries are connected
14.
How does the number of coils affect the strength of an electromagnet? Choose all that apply.
a)
Increasing the coils increases the strength of the magnet
b)
Decreasing the coils increases the strength of the magnet
15.
How does the core material affect the strength of an electromagnet?
a)
The core material has not effect on the strength of the magnet.
b)
The core can be made of any material and it will work
c)
The core can be made of any metal and it will work.
d)
The core must be iron for the electromagnet to work properly.
16.
How does increasing the electric current affect the strength of an electromagnet? Choose all that apply.
a)
Increasing the electric current decreases the strength of the magnet
b)
Increasing the electric currect increases the strength of the magnet
17.
How does the type of wire material affect the strength of an electromagnet?
a)
Electromagnets can only be made using copper wire.
b)
The type of wire material has no effect on an electromagnet. Electromagnets can be made using any material.
c)
Electromagnets can be made using any type of wire, however, aluminum wire works the best.
d)
The type of wire has no effect, but the power source matters.
18.
The strength of a magnet can be affected by
a)
Using copper instead of iron to make the magnet
b)
The type of material to make the magnet
c)
The strength of a magnet cannot be affected by anything
19.
Distance affects the strength of a magnet.
a)
True
b)
False
20.
Which of the following materials cannot be used to make a magnet?
a)
Iron
b)
Nickel
c)
Wood
d)
Cobalt
21.
If you have two opposite magnetic poles facing each other, what will happen?
a)
The magnets will be attracted to each other
b)
The magnets will repel each other
c)
The magnets will not interact with each other
22.
Which of the following materials will not be attracted to a magnet?
a)
Iron
b)
Nickel
c)
Cobalt
d)
Steel
23.
If two magnets come together with like poles facing each other, what will happen to the magnets?
a)
They will attract each other
b)
They will repel each other
c)
Nothing.
24.
A refrigerator magnet is an example of a:
a)
magnetic material
b)
permanent magnet
c)
horseshoe magnet
d)
temporary magnet
25.
Iron, Nickel and cobalt are all __________________ materials
a)
Shiny
b)
poles
c)
magnetic
d)
cold
26.
A coil of wire acts like a magnet when __________________ flows through it.
a)
water
b)
current
c)
voltage
d)
food
27.
This is called an __________________.
a)
bomb
b)
circuit
c)
electromagnet
d)
coil
28.
You can make an electromagnet stronger by: using __________________ coils of wire
a)
bigger
b)
smaller
c)
more
d)
less
29.
You can make an electromagnet stronger by: having a __________________ current in the wire
a)
smaller
b)
larger
c)
greener
d)
water
30.
You can make an electromagnet stronger by: using a __________________ material for the core.
a)
soft
b)
conducting
c)
magnetic
d)
hard
31.
The strongest part of a magnet is...
a)
the bars.
b)
the force field.
c)
the poles.
d)
the middle.
32.
Which of the following is NOT part of an electromagnet?
a)
Wire
b)
Iron
c)
Toothpick
d)
Power source
33.
Surrounding every magnet is a __________ __________.
a)
magnetic field
b)
electrical current
c)
another magnet
34.
How many poles does a magnet have?
a)
1
b)
2
c)
3
d)
4
35.
Magnets that are arranged like this will _______.
a)
move away from each other (repel)
b)
move towards each other (attract)
36.
These magnets will _______.
a)
move away from each other (repel)
b)
move toward each other (attract)
37.
This is a picture of a simple electromagnet. How can the electromagnet be made stronger?
a)
Add more coils of wire to the nail.
b)
Use a smaller battery.
c)
Reverse the poles of the magnet.
d)
Remove all the coils and the nail.
38.
Magnets attract things made of
a)
copper
b)
iron
c)
wood
d)
plastic
39.
Amy used a magnet to hold one piece of paper on the refrigerator. Later, she tried to use the same magnet to hold a stack of four pieces of paper, and the magnet wouldn't stick to the fridge. Why did this happen?
a)
The magnet needs glue
b)
The magnet couldn't hold due to the thickness of the paper
c)
Paper repels magnets
d)
A magnet isn't attracted to the refrigerator.
40.
Which is NOT a use of magnets?
a)
Generating electricity
b)
Holding cabinet doors closed
c)
Sorting paper from plastic
d)
Storing information on computer hard drives.
41.
A magnet will pick up a nail, but not a penny because the nail
a)
has rust on it.
b)
is lighter than the penny.
c)
has a sharp point.
d)
contains iron.
42.
You can make an electromagnet stronger by: having a __________________ current in the wire
a)
smaller
b)
larger
c)
greener
d)
water
43.
You can make an electromagnet stronger by: using a __________________ material for the core.
a)
soft
b)
conducting
c)
magnetic
d)
hard
44.
What subject is attracted to a magnet?
a)
Silver
b)
Water
c)
Metal
d)
Iron
45.
True or False: All metals stick to magnets.
a)
True
b)
False
46.
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.
47.
. Any magnet has two ends, each one called a:
a)
A. Magnetic field
b)
B. Magnetic pole
c)
C. Magnetized material
d)
D. None of the above
48.
A magnet made of a material that keeps its magnetism is known as a:
a)
A. Lifetime magnet
b)
B. Permanent magnet
c)
C. Energizer bunny magnet
d)
D. Temporary magnet
49.
True or False: An electromagnet can function without electricity.
a)
True
b)
False
50.
What is an electromagnet?
a)
a temporary magnet made from current carrying wire around a magnetic metal core.
b)
a permanent magnet with a north and south pole
51.
The force of magnetism is stronger when magnets are ________________
a)
cold
b)
round
c)
closer together
d)
farther apart
52.
This magnet loses magnetization easily
a)
temporary
b)
electromagnet
c)
ferromagnet
d)
permanent
53.
This is a magnet made by an electric current
a)
temporary
b)
permanent
c)
electromagnet
d)
ferromagnet
54.
This material is hard to magnetize, but STAYS magnetized
a)
temporary
b)
permanent
c)
ferromagnet
d)
electromagnet
55.
Which statement is incorrect?
a)
The direction of electric field lines represents the direction that a positive charge would move in the field.
b)
The distance between the lines represents the strength of the field.
c)
The closer the field lines are, the weaker the field.
d)
An electric field is a region where a charged particle will experience a force
56.
The force of magnetism is stronger when magnets are ________________
a)
cold
b)
round
c)
closer together
d)
farther apart
57.
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
58.
What is responsible for the Magnetic Field around Earth?
a)
The Earth's crust
b)
The Earth's molton iron core
c)
The Earth's mantel
d)
The Sun
59.
A device that uses a free-moving magnetic needle to show direction is a:
a)
Ruler
b)
magnet
c)
compass
d)
magnetic field
60.
the direction of magnetic force fields is
a)
out of the north pole and into the south pole
b)
out of the middle of the magnet and into each pole
c)
out of the south pole and into the north pole
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