Introduction to magnetism

• AThe steel will be attracted to the magnet.
• BThe steel will be repelled by the magnet.
• CThe steel will become a permanent magnet.
• DNothing will happen.

• APlacing it in a strong magnetic field opposite to its own.
• BHeating it to a high temperature.
• CStroking it with another magnet.
• DDropping it repeatedly on a hard surface.

• ARepulsive
• BAttractive
• CNo force
• DAlternating

• AIt is strongest at the ends and weaker in the middle.
• BIt is strongest in the middle and weaker at the ends.
• CIt is uniform throughout.
• DIt is zero outside the magnet.

• AThey form a pattern of lines curving from the north pole to the south pole, most concentrated at the poles.
• BThey form a pattern of straight lines from the north pole to the south pole.
• CThey form a random scatter across the paper.
• DThey concentrate only at the north pole.

• AThe steel will be attracted to the magnet.
• BThe steel will be repelled by the magnet.
• CThe steel will not be affected.
• DThe steel will become a permanent magnet.

• AThe rod that is attracted to the magnet is iron.
• BThe rod that is repelled by the magnet is iron.
• CThe rod that does not interact with the magnet is iron.
• DThe rod that becomes magnetised temporarily is iron.

• AEach piece becomes a complete magnet with its own north and south pole.
• BOne piece becomes a north pole and the other becomes a south pole.
• CBoth pieces lose their magnetism.
• DThe pieces repel each other.

• AMagnetic field lines always form closed loops.
• BMagnetic field lines start at the south pole and end at the north pole.
• CMagnetic field lines are evenly spaced around a bar magnet.
• DMagnetic field lines can cross each other.

• ANickel
• BCopper
• CAluminium
• DZinc

• APlacing it in a strong magnetic field with the same polarity.
• BHeating it to a high temperature.
• CHitting it repeatedly with a hammer.
• DPlacing it in a reversed magnetic field.

• ARepulsive
• BAttractive
• CNo force
• DFirst attractive then repulsive

• ATowards the Earth's geographic north pole.
• BTowards the Earth's geographic south pole.
• CTowards the east.
• DTowards the west.

• AIron, nickel, cobalt
• BIron, steel, aluminium
• CCopper, nickel, cobalt
• DIron, copper, zinc

• AAt the ends (poles) of the magnet.
• BIn the middle of the magnet.
• CEvenly distributed across the paper.
• DOnly at the north pole.

• AAway from the north pole.
• BTowards the north pole.
• CParallel to the magnet.
• DRandomly.

• AThey concentrate most where the field is strongest, which is near the poles.
• BThey concentrate most where the field is weakest, which is near the middle.
• CThey form straight lines perpendicular to the magnet.
• DThey are repelled by the north pole and attracted to the south pole.

• AFrom north pole to south pole outside the magnet
• BFrom south pole to north pole outside the magnet
• CFrom north pole to south pole inside the magnet
• DThey are circular and do not have a specific direction

• ABring the magnet near each rod; the ones that are attracted are iron, nickel, and possibly steel if present.
• BBring the magnet near each rod; the ones that are repelled are magnetic.
• CThe magnet will attract only iron and nickel, not aluminium or copper.
• DAll metals will be attracted to the magnet because all metals are magnetic.

• AThe north pole of the compass needle will point towards the south pole of the magnet.
• BThe south pole of the compass needle will point towards the south pole of the magnet.
• CThe compass needle will align with Earth's magnetic field and point north.
• DThe compass needle will spin randomly because it is too close to the magnet.

• AHeating it strongly
• BCooling it in liquid nitrogen
• CStoring it in a magnetic field
• DPainting it with a non-magnetic coating

• AEach piece becomes a complete magnet with its own north and south poles.
• BThe pieces lose all magnetism.
• COne piece becomes a north pole only, the other a south pole only.
• DThe pieces remain magnetic but only have one pole each.

• AAway from north, towards south
• BAway from south, towards north
• CAway from north, towards north
• DAway from south, towards south

• ANon-contact force
• BContact force
• CBoth
• DNeither

• ACobalt is attracted to a bar magnet.
• BCopper is attracted to a bar magnet.
• CIron is repelled by a bar magnet.
• DMagnetic field lines point away from a south pole and towards a north pole.

• AThe field is stronger where lines are closer together.
• BThe field is weaker where lines are closer together.
• CThe field is uniform regardless of line spacing.
• DThe lines indicate the direction of the south pole.

• AThey repel.
• BThey attract.
• CNothing happens.
• DThey become demagnetised.

• APlacing it in a strong magnetic field in the same direction
• BHeating it
• CHitting it with a hammer
• DPlacing it in a reversed magnetic field

• AAt the poles of the magnet
• BAt the centre of the magnet
• CEvenly spread over the paper
• DAway from the magnet

• AThe Earth has a magnetic field with a magnetic south pole near the geographic North Pole.
• BThe Earth has a magnetic field with a magnetic north pole near the geographic North Pole.
• CThe Earth does not have a magnetic field; the magnet aligns with the stars.
• DThe Earth's magnetic field is too weak to affect the magnet.

• ABring the magnet near each rod; the rods that are attracted are magnetic.
• BBring the magnet near each rod; the rods that are repelled are magnetic.
• CTouch the magnet to each rod; the rods that become warm are magnetic.
• DWeigh each rod; the heavier ones are magnetic.

• AThe filings are most concentrated at the poles, where field lines are closest together.
• BThe filings are most concentrated at the center of the magnet, where field lines are densest.
• CThe filings form straight lines parallel to the magnet.
• DThe filings are evenly distributed across the paper.

True or false?

True or false?

• AIron
• BNickel
• CCopper
• DCobalt
• EAluminium

True or false?

• Place the magnet in a reversed magnetic field
• Heat the magnet strongly
• Allow the magnet to cool
• Hit the magnet with a hammer

• Heat the magnet until red hot
• Hammer the magnet while it cools
• Let the magnet cool in a reversed magnetic field

• AHeating it strongly
• BHitting it with a hammer
• CPlacing it in a reversed magnetic field
• DStoring it with a keeper
• ECooling it in liquid nitrogen

True or false?

• AThe field lines are straight and parallel near the poles.
• BThe field lines are closer together near the poles, indicating a stronger field.
• CThe field lines are evenly spaced around the magnet.
• DThe field lines point from the south pole to the north pole inside the magnet.

Magnetic field lines point away from the ____ pole and towards the ____ pole.

The three magnetic metals are ____, ____, and ____.

• A2
• B1
• C3
• D4