Indexed glossary A


absorb – take in or soak up 79 absorbent – when a material can soak up or take in liquids 56


appliances – machines that perform one task 88 asteroid – big rocks that move around the sun 114


axis – centre around which something rotates 129


B


behaviour – the way a person or animal acts 105 bread mould – fungus that grows on bread 11


C


chamber – space or area that is closed on all sides 99


combine – join together 82 condensing – cooling a gas into a liquid 49 constraints – limits or restrictions 94 continents – large masses of land on the Earth’s surface 113


continues – something that goes on for a long time without ending 103


crater – bowl-shaped dent in a surface 127 cutting – piece of stem cut from an existing plant to grow a new plant 26


cycle – process that regularly repeats 131 D


diagram – simple drawing to show how something works 90


desert – area with very little water 32 design – to plan and draw a solution 94


E


effects – when something changes something else 84


evaporating – heating a liquid into a gas 48 excretion – process of getting rid of waste from our bodies 12


F


flexible – when a material can bend easily 56 flower – pretty plant part that holds male and female parts 18


food web – number of linked food chains 82 forest – large area covered with trees 32 frame structure – structure made of strips joined together 39


freezing – cooling a liquid into a solid 49 N


natural gas – gas formed from plants and animals 86


nomadic – people who do not live in one place, but move from one place to another 66


O


orbit – path of a planet, moon or asteroid around another object in space 120


Indexed glossary 141 H


habitat – the natural home of a plant or animal 30


hollow – to empty or remove the insides of an object 92


I


indigenous – someone or something that is found naturally in an area 66


input – something that goes into something else to make it start 88


invisible – something that cannot be seen 47 islands – small masses of land that are surrounded by water 113


L


leaf – green, flat plant part that catches the sunlight 18


limb – part of the body used for movement, such as a leg, fin or wing 22


lunar – something relating to the Moon 126 M


manufacture – make something useful from a raw material 54


materials – things something is made of 40 melting – heating a solid into a liquid 48


fruit – fleshy plant part that forms from a pollinated flower; it contains the seeds 18


funnel – tube with a wide opening at one end and a narrow opening on the other end 98


G


germ – very small living thing 11 germination – process in which a seed sprouts, or begins to grow 28


gibbous – phase between half and full Moon; sometimes referred to as a three-quarter Moon 130


grassland – large open areas covered with grass 32


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