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Magnetic Fields Guide Questions

Total questions: 35

Worksheet time: 20mins

Name
Class
Date
1.
What happens when like poles of two magnets face each other?
a)
They repel
b)
They attract
c)
Nothing happens
d)
They become demagnetized
2.
What surrounds a magnet and causes a magnetic force?
a)
Gravity
b)
Magnetic field
c)
Electric current
d)
Static electricity
3.
Why is the strength of a magnetic field greater nearer to the magnet?
a)
The magnet is more powerful up close
b)
The field lines are more concentrated
c)
Gravity There is less air resistance
d)
The magnetic poles are stronger near the magnet
4.
Which of the following can be used to show the shape of a magnetic field?
a)
Water
b)
Salt
c)
Iron filings
d)
Copper wire
5.
What tool can be used to show the direction of magnetic field lines?
a)
Ruler
b)
Compass
c)
Thermometer
d)
Barometer
6.
If you place small compasses around a bar magnet, what would you expect to observe?
a)
All compass needles pointing in the same direction
b)
Compass needles aligning with the magnetic field lines
c)
Compass needles repelling from the magnet
d)
No movement in the compass needles
7.
What is the difference between permanent and temporary magnets?
a)
Temporary magnets can only attract, not repel
b)
Permanent magnets are stronger than temporary magnets
c)
Permanent magnets are man-made, temporary magnets occur naturally
d)
Permanent magnets are always magnetic, temporary magnets loses megnetism
8.
What happens to an iron paperclip when placed near a permanent magnet without touching it?
a)
It becomes permanently magnetized
b)
It becomes an induced magnet
c)
It repels the permanent magnet
d)
Nothing happens to the paperclip
9.
Why can you create a chain of paperclips hanging from a magnet?
a)
The paperclips are naturally magnetic
b)
Each paperclip becomes an induced magnet
c)
The paperclips become permanently magnetized
d)
The magnet's strength increases with each paperclip
10.
What happens to the induced magnetism in a nail when it's removed from a permanent magnet?
a)
It disappears
b)
It reverses polarity
c)
It becomes stronger
d)
It remains the same
11.
How would the strength of a magnetic field change as you move further away from a magnet?
a)
It would increase
b)
It would decrease
c)
It would remain constant
d)
It would fluctuate randomly
12.
Which of the following BEST describes the direction of magnetic field lines?
a)
Circular around the magnet
b)
From South pole to North pole
c)
From North pole to South pole
d)
Perpendicular to the magnet's surface
13.
If you could see magnetic field lines, how would they appear near the poles compared to the center of a bar magnet?
a)
Absent near the poles
b)
Evenly distributed throughout
c)
More spread out near the poles
d)
More concentrated near the poles
14.
What determines the strength of the magnetic force between two magnets?
a)
Only the distance between them
b)
Only the strength of each magnet
c)
Both the distance and strength of the magnets
d)
The temperature of the surrounding environment
15.
Why might iron filings arranged around a magnet not give a complete picture of the magnetic field?
a)
Iron filings are too heavy
b)
Iron filings are not magnetic
c)
They interfere with the magnetic field
d)
They don't show the direction of the field
16.
What would happen to the magnetic field if you cut a bar magnet in half?
a)
The field would disappear
b)
The field would become twice as strong
c)
One half would be North, the other South
d)
Each half would have its own North and South pole
17.
How does the concept of magnetic fields explain why magnets can attract objects without touching them?
a)
Magnets release invisible particles
b)
Air becomes magnetized between objects
c)
Gravity increases between magnetic objects
d)
The magnetic field extends beyond the physical magnet
18.
Which of these materials is most likely to become an induced magnet?
a)
Iron
b)
Plastic
c)
Copper
d)
Aluminum
19.
How would you expect the magnetic field around an electromagnet to differ from that around a permanent magnet?
a)
It would be weaker
b)
It would only attract, not repel
c)
It would have only one pole
d)
It could be turned on and off
20.
If you had a very powerful magnet, how might its magnetic field affect a compass several meters away?
a)
It would demagnetize the compass
b)
It wouldn't affect the compass at all
c)
It would completely override Earth's magnetic field
d)
It might cause slight inaccuracies in the compass reading
21.

The area of magnetic force around a magnet is known as its _____________.

a)

magnetic field

b)

magnetic declination

c)

magnetic fan lines

d)

magnetic tan lines

22.

A ________ is a device that has a magnet on a needle that spins freely. It is used for navigation because its needle usually points north.

a)

calculator

b)

ruler

c)

compass

d)

map

23.
Which way will the magnets move after they are released?
a)
Towards each other
b)
Away from each other
c)
Not enough information
24.

How would you label pole 3 in the picture below?

a)

North because it is being attracted to pole N across from it.

b)

South because it is being attracted to pole N across from it.

c)

North because it is being repelled from pole N across from it.      

d)

South because it is being repelled from pole S across from it.

25.

Based on the magnetic field line diagrams, what will happen next with these two sets of magnets?

a)

The magnets in Set 1 will repel, and the magnets in Set 2 will attract.

b)

The magnets in Set 1 will attract, and the magnets in Set 2 will repel.

c)

The magnets in Set 1 will not move, and the magnets in Set 2 will attract.

d)

In both sets, the magnets will attract.

26.

Which image shows magnets repelling each other?

a)
b)
27.

Which image shows magnets being attracted together?

a)
b)
28.
Look closely at the magnetic field lines. Will these magnets attract or repel?
a)
Attract
b)
Repel
29.

The image above shows how iron filings respond to magnetic fields generated by two magnets with ____________ poles facing each other.

a)

like

b)

opposite

c)

positive

d)

negative

30.

The image above shows how iron filings respond to magnetic fields generated by two magnets with ____________ poles facing each other.

a)

opposite

b)

like

c)

positive

d)

negative

31.

Which answer describes the pictures correctly?

a)

Both drawings show attraction of magnetic forces.

b)

The left drawing shows repulsion and the right drawing shows attraction of magnetic forces.

c)

Both drawings show repulsion of magnetic forces.

d)

The left drawing shows attraction and the right drawing shows repulsion of magnetic forces.

32.

Eli is holding two magnets close to each other. What will happen when he lets go?

a)

The magnets will not move because the magnets are not touching.

b)

The magnets will move closer to each other because the magnetic force will pull the magnets together.

c)

The magnets will move away from each other because the magnets are not touching.

d)

The magnets will move away from each other because the magnetic force will push the magnets apart.

33.

Why does a compass needle point north?

a)

The compass is a bar magnet

b)

Because north is up and you know that up is always north or the stratosphere.

c)

Because it's magic

d)

Because the North end of the compass lines up with the Earth's magnetic south pole

34.

North and South Pole attract to each other

a)

True

b)

False

35.
What would happen to the magnetic field if you cut a bar magnet in half?
a)
The field would disappear
b)
The field would become twice as strong
c)
One half would be North, the other South
d)
Each half would have its own North and South pole

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