Unit10- Using Resources

Question 1

What do humans rely on the earth🌏 for ?

🔥🏠🍔🚗

Answer 1

Warmth
Shelter
Food
Transport

Question 2

Where do the Earths resources come from⛰🌊☁️

Answer 2

Earths crust
Ocean
Atmosphere

Question 3

What does finite mean

Answer 3

Non renewable resources like metals

Question 4

Sustainable developing meets the needs of the current generation without compromising who

Answer 4

The future generations

Question 5

What must water be low in in order for in to be safe for humans

Answer 5

Salt and microorganisms

Question 6

Which type of water is safe to drink

Answer 6

Potable water

Question 7

How is potable water produced in the UK?

4 steps 🏞🚬💨😁

Answer 7

1. Fresh water is collected from lake or river
2. Passed through a filter bed to remove particles
3. Chlorine gas is added to kill microorganisms
4. Fluoride is added to reduce tooth decay

Question 8

Ozone and ultraviolet can also be used to ?

Answer 8

Sterilise water

Question 9

To improve the taste and quality👌🏼of tap water🚰, more dissolved substances can be removed❌by passing the water through a filter🚬containing ?

Answer 9

Carbon
Silver
Ion exchange resins

Question 10

What can be done to sea water to create pure water

Answer 10

Desalinate it

Question 11

How can desalination be done and what is a negative of it

Answer 11

Distillation or reverse osmosis

Uses loads of energy = Expensive

Question 12

During distillation, the water is boiled to produce steam, the steam is then ?

Answer 12

Condensed to produce pure liquid water

Question 13

What are the 2 tests that can be done to see if a colourless liquid is water

Answer 13

Cobalt chloride paper

Anhydrous copper sulphate

Question 14

How do you test whether water is pure

Answer 14

Boil it and see if it boils at 100C

Question 15

Pure water contains no?

Answer 15

Dissolved substances

Question 16

What are 4 sewage treatments?

🎥🗻❌✅🏃🏼‍♀️

Answer 16

1. Screening and grit removal 🎥
2. Sedimentation to produce sewage sludge and effluent 🗻
3. Anaerobic digestion of sewage sludge🏃🏼‍♀️❌
4. Aerobic biological treatment of effluent✅

Question 17

What are the 3 reasons copper is a useful metal🔥🔌🚰💧

Answer 17

1. Good conductor of electricity and heat🔥🔌
2. Malleable, yet hard enough to make water pipes and tanks🚰
3. Does not react with water so last longer💧

Question 18

What is smelting (terms of copper)

Answer 18

When copper is extracted from its ore by being heated in a furnace with carbon

Question 19

After being smelted, copper can then be purified by what?

Answer 19

Electrolysis

Question 20

What are 2 other methods to obtaining copper (excluding smelting)

Answer 20

1. From solutions of copper salts by electrolysis

2. By displacement using scrap iron

Question 21

During electrolysis of copper, the positive copper ions move towards the ? Electrode to form ?

Answer 21

Negative

Pure copper

Question 22

Due to the extensive mining of copper in the past, there is now little copper-rich ores.
What 2 new methods have been introduced that extract from ores with less copper?🌱🐲

Answer 22

1. Phytomining 🌱

2. Bioleaching 🐲

Question 23

What is phytomining?🌱

• As the plants grow…
• The plants are then burned…

Answer 23

A method that uses plants to absorb copper

• As the plants grow they absorb and store copper
• The plants are then burned and the ash produced contains copper in relatively high quantities

Question 24

What is bioleaching?🐲
- A solution containing…

• The bacteria convert…

Answer 24

The use of bacteria to extract metals from low-grade ores:

• A solution containing bacteria🐲 is mixed with a low-grade ore.
• The bacteria convert the copper into a solution ( known as leachate solution), from which copper can be easily extracted.

Question 25

Why are phytomining and bioleaching more environmentally friendly than traditional mining methods?

Answer 25

Mining creates large quantities of rock and waste materials

Question 26

What does LCA stand for and assess?

Answer 26

Life cycle assessment assesses the environmental impact a product has over its whole lifetime

Question 27

What do unscrupulous advertisers do

Answer 27

Abbreviate LCA to make there product appear better

Question 28

To carry out LCA, scientists measure the impact of: ( 6points )
⛏⚙️🔧💰🚗🗑

Answer 28

• extracting the raw material ⛏
• processing the raw material ⚙️
• manufacturing the product🔧
• how the product is used💰
• how the product is transported🚗
• how the product is disposed 🗑

Question 29

What is an easy aspects to quantify of LCA

and a difficult aspect

Answer 29

Easy-
1. Amount of energy/water/raw materials used
Difficult-
1. Impact on environment

Question 30

Why must glass, plastic and metals be recycled?♻️

💰👎🏼🗑🐳

Answer 30

• save money and energy💰
• make sure natural resources aren’t used up unnecessarily 👎🏼
• reduce amount of waste produced🗑
• reduce damage to the environment caused by extraction🐳

Question 31

Metal, glass, building materials and plastic made from 🛢 are produced from ?

Answer 31

Crude oil are produced from limited resources.

Question 32

Raw materials and the fossil fuels used to obtain them are?

Answer 32

Finite

Question 33

Mining and quarrying processes can be?

Answer 33

Devastating to the environment

Question 34

How can glass be recycled 🍾♻️

Answer 34

Crushed, melted, reused 🍾

Question 35

How can waste plastic be recycled 👕♻️

Answer 35

By being turned into fleece materials👕

Question 36

How can metals be recycled🔥♻️

Answer 36

Melted and turned into new objects

Question 37

♻️Recycling uses less energy than the initial extraction and production process.
This therefore means less ? Is burned and less ? Is released

Answer 37

Less fossil fuels being burnt and less greenhouse gases are released into the atmosphere

Question 38

By recycling, we are preserving ?

Answer 38

Our reserves of raw materials for the future.🐬🌲🌏🌾🚄