Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Geography > Oceans 1, 2,3 - Symes side > Flashcards

Oceans 1, 2,3 - Symes side Flashcards

1
Q

What are the 4 ocean resources?

A
  • Biological, i.e. krill/fish
  • Oil and gas
  • Minerals
  • Renewable energy
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Where are the oil and gas reserves found?

A

Near the continental shelf

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the negative impacts of offshore drilling?

A
  • Could leak - environment
  • Could be a negative military strategy
  • Visual impact
  • Pollution from oil spills
  • High risk low reward
  • Noise disturb marine procreation
  • Profits not evenly disturbed
  • Finite resources
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are the positive impacts oil rigs?

A
  • Multiplier effect
  • Long term they are effective
  • Rigs act as artificial reefs underwater increasing organism pop.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

How has production change?

A
  • Since mid-twentieth century - stimulated the extension of exploration to edge of the continental shelf
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Why will demand for oil + gas increase and decrease?

A
  • Decreased during covid
  • Increased during rise of electric vehicles
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Why will the price of oil + gas increase and decrease?

A
  • Sanctions
  • Global exchange rates
  • Variable to a change in demand
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are the limitations + advantages of supertankers?

A
  • Greater operating expenses - L
  • Ship more at one time - A
  • Require deepwater - L
  • Cannot be breached - A
  • Weigh 250,000 tonnes - L
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are the limitations and advantages of undersea pipelines?

A
  • Fast production - A
  • Sanctions - L
  • Can be breached - L
  • Hit by floats + anchors - L
  • Leaks - L
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What % of energy consumption is from renewable resources?

A

10.6 %

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What’s the biggest renewable sources?

A

Biomass/ solar/geothermal heat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How does tidal energy work?

A
  • Comes from movements of water drawn by the gravitational pull of the moon
  • Shape + depth of coastline influence tidal range
  • Water bulges to the moon
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How does a tidal barrage work? Give an example.

A
  • The incoming tide is held behind a sea wall and then released -> tidal range
  • La Rance in France
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Advantages and disadvantages of tidal barrage?

A
  • Might disrupt trade/ fishing - D
  • Disturbs migratory fish - D
  • Disrupts equilibrium in sediment cell - D
  • Requires deep narrow river - D
  • Not everywhere has right infrastructure - D
  • Take space away from local communities - D
  • Tides predictable - A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is tidal stream energy?

A
  • Take advantage of ocean currents on the sea floor to drive turbines
  • Around coasts or island
  • Can resemble underwater and wind turbines
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are 4 techniques in generating wave power?

A
  • Point absorber
  • Wave roller
  • Device installed on the surface (generator)
  • Pelamis - elongated steel tube - hydraulic systems
17
Q

What are the obstacles in creating wave energy?

A
  • Rough seas - devices cannot
    survive conditions
  • Servicing equipment + adds costs
  • Size + weight reduces efficiency of energy conversion
  • Corrosion
18
Q

Advantages of wave power?

A
  • Generate 7x more than wind turbines
  • Waves are everywhere + full of power
  • Cold, gloomy day
  • Can predict waves through satellite data
  • Reliable
19
Q

Disadvantages of wave power?

A
  • Waves travel in a specific direction
  • Small amount of energy from waves globally
  • Devices need maintenance
  • Nuclear power = competition
  • Complex environment - marine creatures break down metal
  • Won’t replace solar or wind
20
Q

What are the zone where resources are shared?

A

The Clarion Clipperton Zone

21
Q

How much of the sea floor is being mined?

A

1%

22
Q

What is found on the sea floor?

A
  • Gold
  • Silver
  • Diamonds
  • Zinc
  • Colbalt
  • Manganese
  • Copper
23
Q

Where can the metals on the sea floor be found?

A

Lining the outside of black smokers where plates converge or diverge on the sea floor

24
Q

What are the advantages of mining for metals?

A
  • Countries that permit mining get a cut of the revenue
  • Gold in international seabed = $150 trillion
  • Potential for carbon free world if mining continues
  • In the deep sea royalties paid to ISA -> shared for benefit of LIDCs
  • Exploration of EEZ go back to sovereign state
25
Q

What are the disadvantages of mining?

A
  • Child labour in the DRC - major cobalt source
  • USA has not ratified UNCLOS agreement
  • UNESCO no jurisdiction in deep water
  • Exploration only happening on 0.004% of sea floor authorised by ISA
  • Sediment plumes
  • Mud cloud smother organisms
26
Q

What does ISA stand for?

A

International Seabed Authority

27
Q

How many licenses do they give out?

A

16

28
Q

How far is the EEZ?

A

200 miles off of the continental shelf

Geography (63 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions