Construction Materials

Question 0

How do you make glass?

Answer 0

Heat limestone with sand and soda until it melts

Forms glass when cooled

Question 1

What materials are extracted from ores?

Answer 1

Aluminium
Iron
- ores are minerals we get useful materials from

Question 2

How are bricks made?

Answer 2

Clay is formed from weathered decomposed rock
Soft and easy to mould
Fired at high temperature
Can withstand a lot of weight on it

Question 3

How is cement made?

Answer 3

Powdered clay and powdered limestone are roasted in a kiln - cement
Cement is mixed with water - sets hard
Mixed with sand, aggregate and water to make concrete
Reinforced concrete combines concrete with steel supports - combines hardness of concrete with flexibility and strength of steel

Question 4

How does extracting rock cause environmental damage?

Answer 4

Quarrying uses up land - costs money to make good again!
Transporting rock - noise and pollution
Creates dust and noise
Disused sites dangerous - drown in disused quarry lakes, mines collapse causing subsidence