Using Resources 2

Question 1

Where do natural resources come from

Answer 1

Earth
Sea
Air

Question 2

What do natural sources form without

Answer 2

Human inputb

Question 3

Give 2 examples of natural resources

Answer 3

Cotton for clothes

Oil for fuel

Question 4

Natural products can be replaced by synthetic ones or improved upon by man made. Give an example

Answer 4

Rubber made from tree sap can be replaced with different polymers which can replace the rubber in tyers

Question 5

What does agriculture provide with natural resources

Answer 5

Provides conditions where natural resources can be enhanced for our needs.
E.g - development of fertilizer have meant we can produce a high yeild of crops

Question 6

Give an example of renewable resourcesb

Answer 6

Tim er is renewable resource as trees can be planted and grown again and only take a few years to grow

Question 7

What is a finite resources

Answer 7

A non renewable resource

Aren’t formed quick enough as our demand for the, is high

Question 8

Give 2 examples of finite resources

Answer 8

Fossil fuels

Nuclear fuels

Question 9

What happens to finite resources after they have been extracted

Answer 9

Undergo man made processes to provide fuels and materials needed. Eg fractional distillation

Question 10

What is sustainable development

Answer 10

An approach to development that takes account the needs of present society while not damaging the lives of future generations

Question 11

As well as using resources what else is un stainable

Answer 11

Extracting them. Due to the amount of energy used and waste produced

Question 12

What is one way to improve sustainability in extracting copper rich ores

Answer 12

Extracting it from low grade ores (ores with less copper in)

Question 13

Bioleaching is a way of extracting low grade copper ores. Explain it

Answer 13

Bacteria are used to convert copper compounds in ore to soluble copper compounds separating copper from ore in process. The leachate contains copper ions which can then be extracted using electrolysis or displacement with more reactive metal.

Question 14

Phytomining is used to extract low grade copper ores. Explain it

Answer 14

Involves growing plants in soil that contains copper. Plants cant use or get rid of the copper so it gradually builds up in leaves. Plants can be harvested dried or burned in a furnace. Copper then extracted by electrolosis or displacement

Question 15

Why is recycling metals important

Answer 15

Often uses less energy than is needed to mine and extract new metal, conserves the finite amount of each metal in the earth and cuts down amount of waste getting sent to landfil

Question 16

How are metals usually recycled

Answer 16

By melting them and casting them into shape

Question 17

How can glass be recycled

Answer 17

Glass bottles can be reused often without reshaping

Glass can be crushed melted and reshaped

Question 18

What are the 4 stages of the life cycle assessment

Answer 18

1- getting the raw materials
2- manufacturing and packaging
3- using the product
4- product disposal

Question 19

What have life cycle assessments shown between paper bags and plastic bags

Answer 19

Have shown that even though plastic bags aren’t biodegradable they take less energy to make and have a longer lifespan than paper bags so may be less harmful to environment

Question 20

What is the problem with life cycle assessment

Answer 20

Use of energy, some natural resources and the amount of certain types of waste produced can be easily quantified. Hard to give a numerical value to.
They can be biased