Using the Earth's Resources Flashcards
What do we use the Earth's resources for? W S F F T
warmth, shelter, food, fuel, transport
What are some examples of natural resources?
cotton, wool, timber
What are some examples of synthetic resources
p
p
a
plastic, polyester, acrylic
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? p s f p
pure water
salt water
fresh water
potable water
what is potable water
and the difference between normal water
water that is considered safe to drink, containing low levels of dissolved salts/ minerals and free of any microbes (bacteria/viruses)
whereas pure water has nothing else dissolved in it (H2O)
In the UK how is potable water extracted from fresh water
F
s
filtration
sterilisation
What is sterilisation
killing microbes
what are three examples of sterilising agents
UV light
ozone
chlorine gas
how can potable water be produced from SALT water
deSALination
how can Desalination be carried out
Distillation
reverse osmosis
What are three main types of WASTE water
sewage
agricultural waste
industrial waste
what can waste water contain
organic matter
harmful microbes
harmful chemicals
what is the first step in processing waste water
screening
grit removal
what is sedimentation
separating waste water
into sludge and effluent
how is sludge treated
anna sludge
anaerobic respiration
how is effluent treated
fck air
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 are the 4 stages of a life cycle assessment
EMUD.
extracting and processing raw materials
manufacturing and packaging
use and operation during its lifetime
disposal at the end of its useful lifetime
how can we reduce the amount of materials manufactured
reducing reusing or recycling materials
in what ways can materials that are not recycled be disposed?
landfill
incineration
what is meant by a finite resource
will run out as they are no longer being made or are made extremely slowly (over a period of millions of years)
what is meant by the term renewable?
can be replaced as it is used up
what is meant by the term sustainable?
able to be maintained at a certain level over a long period of time
