Using resources

Question 1

What is water that is good quality and safe to drink?

Answer 1

Potable water

Question 2

How is potable water produced in the uk?

Answer 2

1. Fresh water source
2. Filter bed
3. Chlorine gas added
4. Fluoride added to drinking water

Question 3

Desalination of sea water can include..

Answer 3

1. Distillation
2. Reverse osmosis

Question 4

Sewage treatment

Answer 4

1. Screening and grit removal
2. Sedimentation to produce sludge and effluent
3. Anaerobic digestion of sewage sludge
4. Aerobic biological treatment of effluent

Question 5

Why is copper a useful metal?

Answer 5

It is a good conductor of electricity and heat, is it easily bent and it does not react with water so it lasts for a long time.

Question 6

What is smelting?

Answer 6

Copper extractions form copper rich ores by heating the ores with carbon in a furnace.

Question 7

Describe phytomining

Answer 7

It is a method that uses plants to absorb copper. As the plants grow they absorb and store copper. Then plants are then burned and the ash produced contains copper in relatively high quantities.

Question 8

Describe bioleaching

Answer 8

It uses bacteria to extract metals from low grade ores. A solution containing bacteria is mixed with a low grade ore. The bacteria convert the copper into a solution form which copper can be easily extracted

Question 9

To carry out LCA, what scientists must measure the impact of?

Answer 9

1. The extraction and processing of raw materials
2. The manufacturing of the product
3. The usage of the product
4. Transportation and disposal of the product.