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1
Q

What is a finite resource?

A

A resource that is non-sustainable and has a limited amount that will not be replaced at the same rate at which it is used.

Finite resources are often formed naturally over long periods and include fossil fuels and minerals.

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2
Q

What is a renewable resource?

A

A resource that can be replaced naturally and is sustainable.

Examples include solar energy, wind energy, and biomass.

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3
Q

What is sustainability?

A

The avoidance of depletion of natural resources in order to maintain an ecological balance.

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4
Q

List 3 examples of synthetic products.

A
  • Polyester
  • Plastics
  • Concrete
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5
Q

List 3 examples of natural products.

A
  • Cotton
  • Wood
  • Wool
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6
Q

List 3 examples of renewable energy resources.

A
  • Wind
  • Solar
  • Biomass
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7
Q

List 3 examples of finite energy resources.

A
  • Coal
  • Natural gas
  • Oil
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8
Q

Fill in the blank: Wood is more _______ than natural gas as a fuel for central heating boilers.

A

renewable

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9
Q

Fill in the blank: Wood has a lower _______ footprint than natural gas.

A

carbon

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10
Q

True or False: Renewable resources can be used at the same rate at which they are replenished.

A

True

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11
Q
A
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12
Q
A
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13
Q

Which finite resource is likely to run out first?

A

Finite resource

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14
Q

How much faster will coal run out at an accelerated level than today?

A

10 times

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15
Q

How much faster will copper run out at an accelerated level than today?

A

3 times

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16
Q

What impact do renewable resources have on the quantity of finite resources?

A

Renewable resources lower demand

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17
Q

List five finite resources mentioned.

A
  • Aluminium
  • Copper
  • Oil
  • Gas
  • Coal
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18
Q

How many years until coal is depleted at the current level?

A

100 years

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19
Q

Copper is obtained from copper ores or by _______.

A

[recycling copper]

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20
Q

Are copper ores renewable or non-renewable?

A

Non-renewable

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21
Q

Give three reasons why we should use recycled copper instead of copper from copper ores.

Study These Flashcards
A
  • Recycled copper is more renewable than copper ores
  • Mining takes a longer time than just reusing it
  • We are wasting copper resources when not reusing it
22
Q

What is a pure substance made of?

Study These Flashcards
A

1 type of particle

23
Q

What is an impure substance?

Study These Flashcards
A

A mixture of more than one type of particle

24
Q

How can we tell if a substance is pure?

Study These Flashcards
A

By testing its melting point or boiling point

25
What is the melting point of pure water?
0°C
26
What is the boiling point of pure water?
100°C
27
What is the melting point range of impure water?
0-3°C
28
What is the boiling point range of impure water?
97-99°C
29
What is potable water?
Water that is safe to drink
30
Is potable water pure?
No, it is not pure but the impurities are not toxic and are in low concentration
31
What types of water are mentioned?
* Salty water (sea water) * Fresh water (from rivers, lakes, or underground)
32
What does pure water contain?
Just water molecules
33
Fill in the blank: Potable water has _______ levels of salts.
low
34
What can high levels of microbes in water indicate?
Dangerous water
35
What is the first step in the treatment of freshwater to make it potable?
Pass the untreated freshwater through a filter
36
What is used as a sterilizing agent to kill microbes in water treatment?
* Chlorine * Ozone * UV light
37
What is sedimentation in water treatment?
The process of allowing solid particles to settle
38
What methods are used for desalination?
* Distillation * Flash distillation * Reverse Osmosis
39
True or False: Desalination is used in wealthy countries that lack a good supply of fresh water.
True
40
What does potable water from freshwater require?
Treatment to remove impurities and kill microbes
41
Fill in the blank: Potable water is often treated with _______ to kill microbes.
chlorine
42
What is distillation?
A process that involves boiling water to produce steam and then condensing it back into liquid to obtain pure water. ## Footnote Distillation is often used for purifying liquids.
43
What is the main disadvantage of distillation?
It is expensive because energy is needed to heat the water. ## Footnote This can make large-scale applications costly.
44
What is Flash Distillation?
Distillation done at lower pressure, which makes the water evaporate faster and speeds up the process. ## Footnote This method is more efficient than traditional distillation.
45
What is Reverse Osmosis?
A process where pressure is applied to force water through a partially permeable membrane in the opposite direction of osmosis. ## Footnote It uses less energy than distillation.
46
In osmosis, water moves from __________ to __________ across a partially permeable membrane.
higher water potential; lower water potential
47
What are the three types of waste water?
* Sewage * Agricultural * Industrial ## Footnote Each type has different sources and contaminants.
48
What does sewage contain?
Organic matter and harmful chemicals. ## Footnote Sewage is primarily generated from residential areas.
49
What are common contaminants in agricultural waste water?
* Pesticides * Fertilizers ## Footnote These chemicals can harm aquatic ecosystems.
50
What is the purpose of a condenser in distillation?
To cool and condense steam back into liquid water. ## Footnote This is a crucial step for collecting pure water.
51
True or False: Distillation is more energy-efficient than reverse osmosis.
False

The Earths Resources (2 decks)

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