Global Reserves & Potable Water (AQA GCSE Chemistry Combined Science): Flashcards
📚Flashcards
Practise the cards
14 cards from this deck
ShowHide
Practise the cards
14 cards from this deck
What 4 needs do Earth's resources meet?
What 4 needs do Earth's resources meet?
Warmth, shelter, food, transport
Material from trees used for building
Material from trees used for building
Timber
Why trees are renewable
Why trees are renewable
Can plant new ones to replace those cut down
Where metals come from
Where metals come from
Rocks called ores dug from the ground
What iron is turned into
What iron is turned into
Steel
Can metal ores be replaced once used?
Can metal ores be replaced once used?
No, they cannot be replaced
Type of resource crude oil is
Type of resource crude oil is
Finite resource
What crude oil is used to make
What crude oil is used to make
Synthetic products like fuels and plastics
Definition of sustainable development
Definition of sustainable development
Meets needs today without harming future generations' ability to meet their needs
Current copper reserves (million tons)
Current copper reserves (million tons)
684 million tons
Annual copper consumption (million tons/year)
Annual copper consumption (million tons/year)
18 million tons per year
How long current copper reserves might last
How long current copper reserves might last
38 years
Why copper might not run out (2 reasons)
Why copper might not run out (2 reasons)
Recycling and discovering new deposits
What fertilisers help with
What fertilisers help with
Help crops grow better