matter 2
DESCRIPTION
TRANSCRIPT
PROPERTIES OF MATERIALSMATERIALS CAN BE:
RESISTANT (BREAK) FRAGILE
RIGID (BEND) FLEXIBLE
TRANSPA-
RENT
(LIGHT) OPAQUE
PER-MEABLE
(WATER) WATER
PROOFHEAT
CONDUCTORS(HEAT) HEAT
INSULATORS
ELASTIC
KEY WORD
RESISTANT MATERIALS ARE DIFFICULT TO BREAK
FRAGILE MATERIALS BREAK EASILY
A RIGID MATERIAL DOESN’T BEND EASILY
A FLEXIBLE MATERIAL BENDS REALLY EASILY
AN ELASTIC MATERIAL RETURNS TO ITS ORIGINAL SHAPE
LIGHT CAN PASS THROUGH A TRANSPARENT MATERIAL
LIGHT CAN’T PASS THROUGH AN OPAQUE MATERIAL
WATER CAN PASS THROUGH A PERMEABLE MATERIAL
WATER CAN’T PASS THROUGH A WATERPROOF MATERIAL
CURIOUS FACTS:
Our skin is waterproof.
Birds like penguins or gannets need to fish in the water, so they have WATERPROOF feathers.
A gannet fishing
HEAT CAN PASS THROUGH HEAT CONDUCTORS EASILY
HEAT CAN’T PASS THROUGH HEAT INSULATORS EASILY
NATURAL MATERIALS COME FROM NATURE.
THEY CAN COME FROM PLANTS.
wood
cotton
Natural rubber
THEY CAN COME FROM ANIMALS
wool
leather
silk
They can come from minerals
oil
MANUFACTURED MATERIALS: They are made from natural materials that are transformed into
manufactured ones through a manufacturing process. This process normally takes place in
factories
From wood we obtain paper, books, pencils, furniture, etc.
From cotton we get clothes, pillows, bedding, etc.
From natural rubber we take tyres, clothes, rubbers for school, etc.
From wool we obtain clothes, wool string, blankets, etc.
From leather we get clothes,rugs, etc.
From silk we get clothes, bedding, etc.
From oil we obtain plastic,
nylon for clothes, fuel,
etc.
From sand we get glass