Page 39 - ICC Science Dictionary (spreads)

Word Definition Topic(s) Word Definition Topic(s)

longitudinal Where the direction of vibration is TP2 magnetic Non-contact force from a magnet TP3, TP4
wave the same as that of the wave force on a magnetic material

A wave that moves in the same P6 magnetic Materials that are attracted to TP3
direction as the direction in which materials a magnet, e.g. iron, cobalt and
the particles are vibrating. nickel. NOTE very few metals are

loudspeaker Turns an electrical signal into a TP2 magnetic!
pressure wave of sound. magnetic The ends of a magnetic field, TP3

lubricant A lubricant is anything which C2, C7 poles called north-seeking (N) and
reduces the friction between two south-seeking poles (S).
surfaces. magnetism The non-contact force of a TP3

lung volume Measure of the amount of air TB4 magnetic field.
breathed in or out. magnification The amount that an image of B1a, B1b

lymphocytes White blood cells which attack B3 something is scaled up when
pathogens by producing antibodies. viewed through a microscope.

machinery Mechanically operated C9 The ratio of the image height to the P6
equipment, eg a tractor. object height when using lenses.

magnet An object that has a magnetic TP3 magnitude The size of a physical quantity. P5
field and can attract magnetic main A stable stage in the life cycle of a P8
materials. sequence star. Nuclear fusion occurs, fusing

An object capable of exerting a P7 hydrogen nuclei into helium nuclei.
magnetic force. There is a balance between the
outwards radiation and the force
magnetic Able to be magnetised or P5, P7
attracted to a magnet. of gravity pulling inwards.

magnetic Area surrounding a magnet that P5, P7 mains The electrical supply found in P2
field can exert a force on magnetic electrical homes, shops, offices and factories.
materials. supply In the UK, the mains supply is 230 V
with a frequency of 50 Hz.
magnetic An imaginary line which indicates P7
field line the direction of force caused by malaria A potentially fatal disease spread B3
a magnet. An arrow on the line by mosquitoes.
shows the force direction on a malignant A fast-growing tumour that is B2
magnetic north pole, so points tumour cancerous and can invade and
from north to south. spread to other areas of the body.