C15 Using The Earth’s Resources Flashcards
What do we use the earth’s resources for?
Warmth
Shelter
Food
Fuel
Transport
Examples of natural resources?
Cotton
Wool
timber
Examples of synthetic resources
Plastic
Polyester
Acrylic
Finite resource?
A resource that will eventually run out
Sustainable development?
Development that meets the needs of current generations without compromising the ability of future generations to meet their own needs
4 main types of water ?
Pure water
Salt water
Fresh water
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 sterilization ?
Killing microbes 🦠
Three examples of sterilizing agents?
Chlorine gas
UV light
Ozone
How can potable water be produced from salt 🧂 water ⁉️
Desalination
How can desalination be carried out?
Distillation or reverse osmosis
What r the three main types of wastewater ⁉️
Sewage
Agricultural water
Industrial waste
What can wastewater contain ⁉️
Organic matter
Harmful microbes 🦠
Harmful chemicals
What is the first step in processing waste water?
Screening and grit removal
Sedimentation?
Separating the waste water into sludge and effluent
How is sludge treated?
Anaerobic respiration
How is effluent treated?
Aerobic respiration
What is phytomining ?
Using plants to extract copper
What is bioleaching?
Using bacteria to extract copper
What is a life cycle assessment?
A way of assessing the energy costs and environmental effect of a product across its lifetime
What r the four stages of a life cycle assessment?
- Extracting and processing 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
