Uses of Magnets (Leaving Cert Physics): Flashcards
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Practise the cards
15 cards from this deck
Fridge magnets
Fridge magnets
Permanent magnets for sticking items to refrigerator doors
MRI machines use
MRI machines use
Strong electromagnets to create detailed body images
MRI advantage
MRI advantage
Non-invasive imaging without surgery or harmful radiation
Magnetic compass function
Magnetic compass function
Magnetised needle aligns with Earth's magnetic field
Earth's magnetic field source
Earth's magnetic field source
Movement of molten iron in the planet's outer core
Maglev trains eliminate friction by
Maglev trains eliminate friction by
Using electromagnets to lift train above the track
Metal detector operation
Metal detector operation
Creates magnetic field to detect metallic objects
Industrial electromagnets used for
Industrial electromagnets used for
Lifting and moving heavy ferrous materials
Hard drive data storage method
Hard drive data storage method
Magnetising tiny areas in different directions (0s and 1s)
Electric motors convert
Electric motors convert
Electrical energy into mechanical motion
Generators convert
Generators convert
Mechanical motion into electrical energy
Loudspeaker sound production
Loudspeaker sound production
Magnet/electromagnet interaction causes vibration
Magnetic poles principle
Magnetic poles principle
Always occur in pairs (north-seeking and south-seeking)
Like vs unlike poles
Like vs unlike poles
Like poles repel, unlike poles attract
Magnetic field lines direction
Magnetic field lines direction
From north pole to south pole