Page 57 - ICC Science Dictionary (spreads)

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

resultant Single force which can replace TP4 runners A slender fast growing stem that B1a, B1b
force all the forces acting on an object grows horizontally over the soil
and have the same effect. surface and puts down roots to
The single force that could replace P5, P8 form new plants eg strawberry
all the forces acting on an object, rusting A corrosion process in which iron or TC4, C10
found by adding these together. steel reacts with oxygen and water.
If all the forces are balanced, the sacrificial A more reactive metal than iron, C10
resultant force is zero. metal attached to an iron or steel object

reverse A method of purifying water by C10 to prevent the object rusting.
osmosis forcing it under pressure through salt A compound produced by a TC3
a membrane which has tiny neutralisation reaction.
holes in it. The molecules of water
pass through the holes but most The substance formed when C4, C7, C10
ions and molecules of dissolved the hydrogen ion in an acid is
substances do not pass through. replaced by a metal ion.

reversible A chemical reaction which can C3, C4, C6, sample A representative part of a larger B2
reaction go both ways. C10 quantity.

rib cage The arrangement of bones in B2 sampling The selection of subjects included B7a, B7b
the thorax, formed by the ribs, in a study.
vetebral column and sternum, satellite Body that orbits a planet. P8
that encloses the lungs and heart. For example, the Moon is a
ribosome The site of protein synthesis. B1a, B1b, B6 natural satellite of the Earth but
communication satellites are
ribs Bones which surround the lungs to TB4 artificial satellites of the Earth.
form the ribcage.
saturated Unable to contain any more liquid. C4, C7
risk factor Something that increases a person's B2
chances of developing a disease. scalar A quantity that requires only a P5
size, for example, distance
root hair cell A specialised cell that increases B1a, B1b, C10 travelled is 20 m.
the surface area of the root
epidermis to improve the uptake scattering When light bounces off an object TP2
of water and minerals. in all directions.
scurvy A deficiency disease that occurs B3
when an individual has insufficient
vitamin C.