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CEMENT

subject: ENGINEERING - different materials
a grey powder which is mixed with water and sand to make mortar or with water, sand and small stones to make concrete

CONCRETE

subject: ENGINEERING - different materials
a very hard building material made by mixing together cement, sand, small stones and water

PLASTIC

subject: ENGINEERING - different materials
an artificial substance that can be shaped when soft into many different forms and has many different uses

DIAMOND

subject: ENGINEERING - different materials
an extremely hard valuable stone which is used in jewellery, and in industry for cutting hard things

STEEL

subject: ENGINEERING - different materials
a strong metal which is a mixture of iron and carbon, and which is used for making things which need a strong structure, especially vehicles and buildings

FIBRE OPTICS

subject: ENGINEERING - different materials
a long thin glass rod through which very large amounts of information can be sent in the form of light

IRON

subject: ENGINEERING - different materials
a chemical element

COPPER

subject: ENGINEERING - different materials
a reddish-brown metal used especially for making wire and coins, or the reddish brown colour of this metal

GLASS

subject: ENGINEERING - different materials
a hard transparent material which is used to make windows, bottles and other objects

BRASS

subject: ENGINEERING - different materials
a bright yellow metal made from copper and zinc

CEMENT

subject: ENGINEERING - different materials
a grey powder which is mixed with water and sand to make mortar or with water, sand and small stones to make concrete

CONCRETE

subject: ENGINEERING - different materials
a very hard building material made by mixing together cement, sand, small stones and water

PLASTIC

subject: ENGINEERING - different materials
an artificial substance that can be shaped when soft into many different forms and has many different uses

DIAMOND

subject: ENGINEERING - different materials
an extremely hard valuable stone which is used in jewellery, and in industry for cutting hard things

STEEL

subject: ENGINEERING - different materials
a strong metal which is a mixture of iron and carbon, and which is used for making things which need a strong structure, especially vehicles and buildings

FIBRE OPTICS

subject: ENGINEERING - different materials
a long thin glass rod through which very large amounts of information can be sent in the form of light

IRON

subject: ENGINEERING - different materials
a chemical element

COPPER

subject: ENGINEERING - different materials
a reddish-brown metal used especially for making wire and coins, or the reddish brown colour of this metal

GLASS

subject: ENGINEERING - different materials
a hard transparent material which is used to make windows, bottles and other objects

BRASS

subject: ENGINEERING - different materials
a bright yellow metal made from copper and zinc
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