Using Resources

Question 1

What do humans use earths resources for?

Answer 1

Warmth, shelter, food and transport

Question 2

What are some examples of natural resources?

Answer 2

Cotton wool and timber

Question 3

What does synthetic mean?

Answer 3

Developed by chemical synthesis made by humans

Question 4

What are some examples of synthetic resources?

Answer 4

Plastic polyester acrylic

Question 5

What is a finite resource

Answer 5

A resource that will eventually run out

Question 6

What is sustainable development?

Answer 6

Development that meets the needs of the current generations, without compromising the ability of future generations to meet their needs

Question 7

Define potable water

Answer 7

Water that is safe to drink

Question 8

Portable water contains

Answer 8

Low levels of dissolved salts and microbes

Question 9

Pure water contains

Answer 9

Only water molecules

Question 10

Two. Freshwater sources

Answer 10

 lakes, Rivers, Reservoir, and groundwater

Question 11

What two steps are required to make freshwater potable

Answer 11

Filtration and sterilization

Question 12

Give two ways to sterilize water

Answer 12

UV light, ozone and chlorine

Question 13

Name the process that removes salt from seawater water

Answer 13

Desalination

Question 14

Give one way in which salt can be removed from seawater

Answer 14

Distillation or reverse osmosis

Question 15

Give an diadvantage of desalination

Answer 15

It uses lots of energy, so it’s very expensive

Question 16

How can you determine the mass of dissolved solid in a sample of water?

Answer 16

Evaporate the water and weigh the sample on a balance

Question 17

What needs to be removed from sewage and agricultural waste water before safe to be released into the environment

Answer 17

Organic
Matter and microbes

Question 18

What needs to be removed from industrial wastewater before it is safe to be released into the environment

Answer 18

Organic matter and harmful chemicals

Question 19

The first step in wastewater treatment is

Answer 19

Screening and grit removal

Question 20

Sewage sludge is digested

Answer 20

Anaerobically

Question 21

Sewage effluent is digested

Answer 21

Aerobically

Question 22

What does a lifecycle assessment assess?

Answer 22

The environmental impact of a product

Question 23

Name the four stages of a lifecycle assessment

Answer 23

Extracting and processing raw materials, manufacturing, and packaging. Use during lifetime disposal

Question 24

Between each stage of a lifecycle assessment, there is

Answer 24

Transport

Question 25

What are the three Rs

Answer 25

Reduce reuse recycle