Magnets and magnetic fields (AQA GCSE Physics Combined Science): Flashcards
📚Flashcards
Practise the cards
15 cards from this deck
ShowHide
Practise the cards
15 cards from this deck
Two ends of a magnet
Two ends of a magnet
Poles (North pole and South pole)
Like magnetic poles (e.g. N-N, S-S)
Like magnetic poles (e.g. N-N, S-S)
Repel
Unlike magnetic poles (e.g. N-S)
Unlike magnetic poles (e.g. N-S)
Attract
Where magnetic field is strongest
Where magnetic field is strongest
At the poles
Direction of magnetic field lines
Direction of magnetic field lines
From North to South poles
Permanent magnet definition
Permanent magnet definition
Makes its own magnetic field all the time
Induced magnet definition
Induced magnet definition
Only magnetic when in another magnet's field
What induced magnetism always causes
What induced magnetism always causes
Attraction
Main magnetic materials at room temp
Main magnetic materials at room temp
Iron, cobalt, nickel, steel
What a plotting compass contains
What a plotting compass contains
A tiny bar magnet (the needle)
Direction a compass needle points
Direction a compass needle points
Towards magnetic North
Why Earth affects compasses
Why Earth affects compasses
Earth's core contains magnetic materials
Key test: permanent vs induced magnet
Key test: permanent vs induced magnet
Permanent can repel; induced only attracts
Type of force between magnets (no touching)
Type of force between magnets (no touching)
Non-contact force
When induced magnets lose their magnetism
When induced magnets lose their magnetism
When removed from the magnetic field