Lesson T5.3.1
T5.3.1 Magnetic poles and field lines Quiz: KS3 Physics, Unit 5
20 questions
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Lesson T5.3.1, Magnetic poles and field lines: 20 multiple choice questions for the KS3 Physics (National Curriculum), Unit 5: Electricity and magnetism, written with Revision Ninja.
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The 20 questions
-
Which pair of magnetic poles will experience an attraction force?
- North and south
- East and west
- North and north
- South and south
-
What happens when two like magnetic poles are brought close together?
- They melt
- They repel
- They attract
- They neutralise
-
Which direction do magnetic field lines point outside a bar magnet?
- North to south
- South to north
- Inward to centre
- East to west
-
Where is the magnetic field of a bar magnet at its strongest?
- At its centre
- Above the middle
- Equidistant outside
- Near its poles
-
What does a plotting compass needle show when placed in a magnetic field?
- Magnetic strength
- Field direction
- Electrical current
- Object temperature
-
Which action can magnetic field lines never perform?
- Cross each other
- Point downwards
- Spread out
- Form loops
-
Which of these materials is attracted to a magnet?
- Aluminium
- Plastic
- Iron
- Copper
-
A steel bar held near a magnet becomes a magnet itself. What is this called?
- Electrostatic charging
- Static friction
- Induced magnetism
- Thermal expansion
-
What happens when you cut a bar magnet in half?
- Total demagnetisation
- Two complete magnets
- One north-only piece
- One south-only piece
-
What happens when a south pole touches a north pole of two bar magnets?
- They repel
- They spark
- Nothing happens
- They attract
-
How do magnetic field lines run between two facing unlike poles?
- Diagonally away
- In circles
- Parallel loops
- Straight across
-
Why can a magnet attract paper clips through a sheet of paper?
- Paper is magnetic
- Paper conducts magnetism
- Air blocks force
- Acts through materials
-
What is the region around a magnet where magnetic forces can be felt called?
- A gravitational field
- A nuclear field
- A magnetic field
- An electric field
-
Which tool is used to plot the shape of a magnetic field?
- A voltmeter for voltage
- A plotting compass
- A newtonmeter for weight
- A thermometer for heat
-
Why does a magnet's field get weaker further away from it?
- Gravity cancels it
- Poles lose strength
- Lines get shorter
- Lines spread out
-
Which material is most suitable for making a permanent magnet?
- Rubber
- Copper
- Aluminium
- Steel
-
How many magnetic poles does every single magnet possess?
- Three poles
- Four poles
- One pole
- Two poles
-
What causes compass needles placed near a bar magnet to point in different directions?
- Random air currents
- Magnetic decay
- Varying field direction
- Unequal needle weight
-
Inside a bar magnet, which way do the magnetic field lines point?
- South to north
- East to west
- North to south
- In circles
-
Roughly which way does a freely hanging bar magnet settle?
- Up and down
- Random directions
- North and south
- East and west
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