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WorksheetsWhat is a magnet?
Total questions: 30
Worksheet time: 18mins
Magnetization is the proses by which a magnetic substance attains magnetism
temporally
never
permanently
temporally and permanently
How can you destroyed a magnet by demagnetization
Rough handling
By passing electricity
All of them
By heating
How long does a magnet last?
10 days
421 days
for ever, losing only 5% in 100 years
for ever without losing any ability
Magnets can attract materials such as
steel
plastic
wood
ceramic
The magnet is not attracted to materials such as
steel
stainless steel
cobalt
iron
How many poles does Magnets have?
3
1
4
2
The magnet poles are called...
South and East pole
West and North pole
North and South pole
East and West pole
Can a magnet have only one pole?
yes
maybe
no, it has 3 poles
no
How many poles will a bar magnet have, when broken into two parts, all the pieces include?
2
1
4
0
Clic on one magnet type.
Straight magnet
Bar magnet
Long magnet
Pin magnet
Unlike poles will _____________ each other
make a noise to
push
attract
repel
North Pole will repel the North pole of another magnet.
False
True
Sometimes
Never
When a north pole and south pole point together, the arrows will point ...
to the right
to the left
in different directions
in the same direction
Permanent magnets are made from:
small rubber pieces
special alloys
chopped wood
old stones
Are magnets natural or manmade?
Natural
None of theses
Manmade
Natural and manmade
What is Magnetism?
Movement
A force
Line
Circle
What are the characteristics of magnets？
Can arrtact iron, cobalt and wood
Can arrtact nickle, cobalt and wood
Can arrtact iron, cobalt and nickle
Can arrtact plastic, cobalt and wood
A freely suspended magnet always points in a north-south direction.
False
Sometimes
Never
True
One way to magnetise a steel bar is.....
Paint it red
Paint it blue
Single touch method
Four times touch method
The attraction of a magnet can be produced over a ____________!
fence
kilometer
meter
distance
Magnetic Field is the space
around a magnet
with
a (a)
Magnetic field has a (a)
There are three (3) types of magnets.
Red magnets.
Temporary magnet.
Electromagnets.
Permanent magnet.
Temporary magnet.
Electromagnets.
Red and blue magnet.
Temporary magnet.
Electromagnets.
Permanent magnet.
Temporary magnet.
Paperclip magnets.
These curves are called magnetic lines of (a) .
The strength of
magnetic fields
is measured in
units of (a)
Magnetic Field strength is proportional to the __________.
line density
size density
line lenght
magnetig density
Electrons spinning in the same direction produce a _____________ magnet.
weaker
longer
stronger
shorter
The magnetic field around the earth is called ________________ field.
induction
geografical
magnetic
geomagnetic
The geomagnetic N pole is near the geographic (a) .
Which country founded the compass?
USA
UK
China
Canada
