Flashcards
Magnetism
Cards in this deck (35)
- 1what are the different types of magnetsnaturally
induced - 2what is a magnetised element known asa magnet
- 3what are the characteristics of a magnetattracting other metals
north seeking - 4what are the lines around a magnetic known asmagnetic lines of flux
- 5what do opposite poles doattract
- 6what do like poles dorepel
- 7what is the colour of the north polered
- 8what is the colour of the south poleblue
- 9what are the different methods of magnetism-stroking
- vibrating/hammering
- by solenoid induction - 10what are the ways of demagnetising- breaking the magnetics into small pieces
- subjecting the magnets to high temp
- electrical current, inducing a field in the opposite direction - 11what is important to note about where the magnetic poles lie on the earthdo not lie on the spin axis
- 12how does the earth behaveas if a huge magnet lies in the centre producing a magnetic field over the surface
- 13define magnetic dipone end of a freely suspended magnetic will dip below the horizontal plane and point towards the nearer pole
- 14where does magnetic dip not occurat the magnetic equator
- 15what types of errors are caused by magnetic dipturning errors
acceleration errors - 16what impact does the magnetic dip havecauses a highly reduced horizontal component
- 17what can be said about the relationship between the horizontal component and accuracythe less the horizontal component the less accurate the magnet will be
- 18what are the two components of the magnetic forcehorizontal
vertical - 19what does T stand fortotal force
- 20in what direction does T act inacts in the direction of a freely suspended magnet influenced only by the magnetic field
- 21what does H stand forhorizontal component
- 22what is another name for the horizontal forcethe directive force
- 23what does Z stand forthe vertical component
- 24what is the DIPthe angle
- 25tan dip =Z/H
- 26Z==TsinDIP
- 27H==TcosDIP
- 28define Isoclinalslines of equal dip
- 29define the Aclinic Lineline of zero dip, the magnetic equator
- 30what is an Aclinic LineIsoclinals
- 31where is the compass most accurateAclinic Line
- 32Westerly Variation is ...Negative
- 33Easterly Variation is...... positive
- 34define Isogonalslines of equal variation
- 35define Agonic linelines of zero variation
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- INST Flashcards on Magnetism, created by Ella Davies on 12/03/2018.
- Created by
- Ella Davies · Mar 2018
- Updated
- Mar 12, 2018
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