Using resources

Question 1

What do humans use Earth’s resources for

Answer 1

warmth,shelter,food,transport

Question 2

what do natural sources provide (fftc)

Answer 2

food,timber,clothes,fuels (supplemented by agriculture)

Question 3

where do we get finite resources from

Answer 3

earth,oceans,atmosphere (to provide energy and materials)

Question 4

what is sustainable development

Answer 4

meets the needs of current generations without compromising the ability of future generations

Question 5

what is potable water

Answer 5

water that is safe to drink

Question 6

is potable water pure

Answer 6

no

Question 7

what do you need low levels of in drinking water

Answer 7

dissolved salts and microbes

Question 8

what dictates the method used to obtain potable water (s/lc)

Answer 8

supplies of water and local conditions

Question 9

how is most potable water produced in the UK

Answer 9

choose appropriate source,pass water through filter beds,sterilise

Question 10

where is most of the potable water obtained from in the UK

Answer 10

rain water provides water with low levels of dissolved substances (fresh water) which collects in the ground and in lakes and rivers

Question 11

what are three ways to sterilise water

Answer 11

chlorine,ozone,ultraviolet light

Question 12

What is another method to obtain potable water if fresh water is limited?

Answer 12

Desalination of salty or sea water

Question 13

What process is used in desalination?

Answer 13

Distillation or using membranes by reverse osmosis

Question 14

What are the issues with desalination and reverse osmosis?

Answer 14

Require large amounts of energy

Question 15

What produces large amounts of waste? (U/IP)

Answer 15

Urban lifestyles and industrial proceses

Question 16

What is removed from sewage and agricultural waste?

Answer 16

Organic matter and harmful microbes

Question 17

What is removed from industrial waste?

Answer 17

Organic matter and harmful chemicals

Question 18

What are the steps in sewage treatment? (Sgrspssaeadssabtoe)

Answer 18

Screening and grit removal,sedimentation to produce sewage sludge and effluent,anaerobic digestion of sewage sludge,aerobic biological treatment of effluent

Question 19

What is happening to earths metal resources?

Answer 19

Becoming limited and scarce

Question 20

2 ways to extract copper from low grade ores

Answer 20

Phytomining and bioleaching

Question 21

What do phytomining and bioleaching avoid compared to traditional methods?

Answer 21

Digging,moving and disposing of large amounts of rocks

Question 22

What does bioleaching use to extract the copper?

Answer 22

Bacteria to produce a leachate that contain metal compounds

Question 23

How can metal compounds be extracted after bioleaching?

Answer 23

By displacement with scrap iron or electrolysis

Question 24

How is copper extracted by phytomining?

Answer 24

Plant are used absorb metal compounds,the plants are harvested and then burned,this produces ash that contains metal compounds

Question 25

How can metal compounds be processed to obtain the metal?

Answer 25

Example includes using scrap iron to displace the copper from a solution or by electrolysis

Question 26

What is a life cycle assessment (LCA)?

Answer 26

A way to assess the environmental impact of a product at all stages

Question 27

What are the stages assessed in a life cycle assessment?

Answer 27

Extracting and processing raw materials,manufacturing and packaging,use and operation during its lifetime,disposal and end of its useful life,includes transport and distribution

Question 28

What resources can be easily quantified?

Answer 28

Water resources,energy sources,production wastes

Question 29

What type of substance is hard to quantify?

Answer 29

Pollutants as based on judgement so is not purely objective

Question 30

What is the issue with selected or abbreviated life cycle assessments?

Answer 30

Misused to reach conclusion e.g. false advertising claims

Question 31

How can we reduce the use of resources?

Answer 31

Reuse and recycle

Question 32

What are impacts of reuse and recycle?

Answer 32

Reduces of limited resources,energy use,reduces waste so environmental impact

Question 33

Examples of products from limited resources

Answer 33

Metals,glass,building materials,clay ceramics,most plastics

Question 34

Where are the resources obtained from for these products?

Answer 34

Quarrying and mining which causes environmental issues

Question 35

What are the two ways to reuse these products?

Answer 35

Reuse (glass) and recycled

Question 36

How can metals be recycled?

Answer 36

Melting and recasting or reforming into different products

Question 37

What dictates the amount of recycling needed for a metal

Answer 37

Material and its final use (product)

Question 38

How can glass bottles be reused?

Answer 38

Crushed then melted to make different glass products

Question 39

What happens to a product that can’t be reused?

Answer 39

Can be recycled for a different use

Question 40

What dictates the amount of separation required for recycling?

Answer 40

Depends upon the material and the properties required of the final product