using resources Flashcards
(15 cards)
1
Q
renewable
A
timber
2
Q
non-renewable (finite)
A
metal ores
3
Q
water naturally contains…
A
a low level of microorganisms + dissolved salts
4
Q
safe to drink water =
A
potable water
5
Q
how to sterilise water
A
- filtrate + add chlorine gas + florine
- ozone
- ultraviolet
6
Q
how can sea water turn into pure water?
A
- distillation
- reverse osmosis
7
Q
distillation
A
- water is boiled to produce steam
- steam is condensed to produce pure liquid water
8
Q
waste water treatment
A
screening + grit removed
9
Q
copper properties:
A
- conductor of electricity + heat
- easily bent
- does not react with water
10
Q
smelting
A
use of heat to purify metal for an ore
11
Q
phytomining
A
plants
12
Q
bioleaching
A
bacteria
13
Q
life cycle assessment (LCA)
A
used to asses the environmental impact a product has over its whole lifetime
14
Q
what does lca do
A
compare products to see what cause least damage to the environment
15
Q
lca scientists measure impact of
A
- extracting raw material
- processing raw materials
- manufacturing the product
- how product is used
- how product is transported
- how product is disposed at the end
