Using the Earth's Resources

Created by

alex

Cards (22)

What do we use the Earth's resources for?
Warmth, shelter, food, fuel, transport.
What are some examples of natural resources?
Cotton, wool, timber.
What are some examples of synthetic resources?
Plastic, polyester, acrylic.
What is a finite resource?
A resource that will eventually run out.
What is sustainable development?
Development that meets the needs of current generations without compromising the ability of future generations to meet their own needs.
What are the four main types of water?
Pure water, salt water, fresh water and potable water.
What is potable water?
Water that is safe to drink.
In the UK, how is potable water extracted from fresh water?
Filtration and sterilisation.
What is sterilisation?
Killing microbes.
What are three examples of sterilising agents?
Chlorine gas, UV light and ozone
How can desalination be carried out?
distillation or reverse osmosis.
What are the three main types of waste water?
Sewage, agricultural waste and industrial waste.
What can waste water contain?
Organic matter, harmful microbes, harmful chemicals.
What is the first step in processing waste water?
Screening and grit removal.
What is sedimentation?
Separating the waste water into sludge and effluent.
How is sludge treated?
Anaerobic respiration.
How is effluent treated?
Aerobic respiration.
What is a life cycle assessment?
A way of assessing the energy costs and environmental effect of a product across its lifetime.
What are the four stages of a life cycle assessment?
Extracting and processing of raw materials.
Manufacturing and packaging.
Use and operation during its lifetime.
Disposal at the end of its useful life.
How can we reduce the amount of new materials manufactured?
By reducing, reusing, or recycling products.
In what ways can materials that are not recycled be disposed?
Landfill or incineration.
How can potable water be produced from salt water?
Desalination.