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magnets

Total questions: 40

Worksheet time: 2hrs 0mins

Name
Class
Date
1.
Magnetism is....
a)
The part of the magnet where the force is the strongest
b)
A force created by magnets that pulls some metals
c)
To Pull towards
d)
An object able to pull some metals towards itself
2.
Poles are ....
a)
The part of the magnet where the force is the strongest
b)
A force created by magnets that pulls some metals
c)
To Pull towards
d)
An object able to pull some metals towards itself
3.
To attract means....
a)
The part of the magnet where the force is the strongest
b)
A force created by magnets that pulls some metals
c)
To Pull towards
d)
An object able to pull some metals towards itself
4.
To repel means....
a)
To push away
b)
A force created by magnets that pulls some metals
c)
To Pull towards
d)
An object able to pull some metals towards itself
5.
A magnet is...
a)
To push away
b)
A force created by magnets that pulls some metals
c)
To Pull towards
d)
An object able to pull some metals towards itself
6.
eraser
a)
Magnetic
b)
Not Magnetic
7.
Metal Tack
a)
Magnetic
b)
Not Magnetic
8.
nail
a)
Magnetic
b)
Not Magnetic
9.
pencil
a)
magnetic
b)
not magnetic 
10.
Do these magnets attract or repel? 
a)
Attract
b)
Repel
11.
Do these magnets attract or repel?
a)
Attrack
b)
Repel
12.
When two magnets repel, they ________________
a)
change color
b)
pull together
c)
push apart
d)
get colder
13.
Magnets have a north and a south ___________
a)
shape
b)
color
c)
pole
d)
region
14.
Two north poles will attract.
a)
True
b)
False
15.
What would we call a nail that can pick up a paperclip because it is touching a magnet?
a)
temporary magnet
b)
poles
c)
force
d)
detector
16.
A north pole and a south pole will attract.
a)
True
b)
False
17.
A magnet cannot not move which of the following objects?
a)
a paper clip
b)
a nail
c)
a toothpick
d)
a staple
18.
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.
19.
Earth acts like a giant magnet because its center is made up MOSTLY of
a)
granite
b)
limestone
c)
iron
d)
nickel
20.
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
21.
A device that uses a free-moving magnetic needle to show direction is a:
a)
lodestone
b)
magnet
c)
compass
d)
magnetic field
22.
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
23.
This large crane magnet functions only when the electrical current is ON.  The crane magnet is an example of what type of magnet?
a)
NIB Magnet
b)
Ceramic Magnet
c)
Electromagnet
d)
funnel magnet
24.
Iron, Nickel and cobalt are all __________________ materials
a)
Shiny
b)
poles
c)
magnetic
d)
cold
25.
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
26.
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
27.

If you bring 2 magnets together and they push away, what should happen if you turn one around?

a)

the magnets should push further apart

b)

the magnets should be attracted to one another

c)

the magnets should not move

d)

one magnet will float above the other

28.

Choose the magnetic materials

a)

plastic and iron

b)

steel and iron

c)

paper and cloth

d)

wood and silver

29.

Magnetism is a force.

a)

True

b)

False

30.

A magnet will not work in water.

a)

True

b)

False

31.
What do the lines around this magnet represent?
a)
North Pole
b)
South Pole
c)
Magnetic Declination
d)
Magnetic Field
32.

The Earth has a magnetic field.

a)

True

b)

False

33.
Earth acts like a giant magnet because its center is made up MOSTLY of
a)
granite
b)
limestone
c)
iron
d)
nickel
34.
A magnetized iron nail is called a ________ magnet.
a)
permanent
b)
temporary
c)
horseshoe
d)
industrial
35.
I keep magnetism for a short amount of time. What am I?
a)
permanent magnet
b)
temporary magnet
c)
lines of force
d)
magnetism
36.

What characteristics do magnetic substances have?

a)

They are always black in color and cold when you touch them.

b)

They have the ability to push and pull objects.

c)

The shock you when you come in contact with them.

d)

When dropped, they will fall quickly.

37.

Magnetic field line start from _______________ and end at _____________

a)

north pole, south pole

b)

south pole, north pole

c)

north pole, north pole

d)

south pole, south pole

38.

The strength of a magnetic field in an electromagnet increases if :

a)

electric current decrease

b)

electric current increases

c)

number of turns of the coil decreases

d)

number of turns of the coil increases

39.

True or False:

The following items are NOT MAGNETIC: basketball, wooden spoon, rubber band, penny, aluminum foil

a)

TRUE

b)

FALSE

40.

What happens in an electromagnet?

a)

Mechanical energy produces an electric field

b)

Mechanical energy transforms into electrical energy

c)

Electrical energy produces a magnetic field

d)

Electrical energy transforms into mechanical energy