resources - using earth’s resources

Question 1

what do we use resources for?

Answer 1

to provide warmth, shelter, food and transport

Question 2

in most cases, what are resources produced by?

Answer 2

agriculture
eg cotton produced from a plant. modern agriculture allows enough colton plant to be brown to meet the needs of the world

Question 3

what do humans plant? what are these used for?

Answer 3

trees which are used for timber or fuel
many power stations run on biofuel such as wood chips

Question 4

__________ helps us to use the Earth’s ________ more ___________

Answer 4

agriculture, resources, efficiently

Question 5

what has chemistry replaced some natural resources with?

Answer 5

a synthetic alternative
example: rubber. natural rubber comes from sap of tree however synthetic rubber is made from crude oil. around two thirds of the rubber used in there world is now synthetic

Question 6

some natural resources are ______. examples?

Answer 6

finite - they can’t be replaced as quickly as being used
example: fossil fuels. humans use millions of kilograms of fossil fuels everyday however rate at which they form is slower than this. they will eventually run out
example: metal. huge amounts of metal extracted from earth’s crust + continue using them at this rate they will run out

Question 7

some resources are ________. examples

Answer 7

renewable - replace these as quickly as we will use them so will never run out of
example: wood

Question 8

why is it important for human activities to be sustainable?

Answer 8

so we can meet our needs without preventing future generations from meeting theirs

Question 9

how does chemistry play a role in how we use our resources?

Answer 9

• artificial resources allow us to grow more food with the land available.
• also helps to provide water safe to drink
• processes such as photo mining and bio leaching help us to extract metals more efficiently