1.1.1 The average tidal range on South African coastlines, from spring low to spring high, is …
A 1 m - NSC Marine Sciences - Question 1 - 2022 - Paper 1
Question 1
1.1.1 The average tidal range on South African coastlines, from spring low to spring high, is …
A 1 m.
B 2 m.
C 3 m.
D 4 m.
1.1.2 Scientists use data to calcula... show full transcript
Worked Solution & Example Answer:1.1.1 The average tidal range on South African coastlines, from spring low to spring high, is …
A 1 m - NSC Marine Sciences - Question 1 - 2022 - Paper 1
Step 1
1.1.1 The average tidal range on South African coastlines, from spring low to spring high, is …
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Answer
The average tidal range on South African coastlines is 2 m (Option B). This is a typical range experienced in these regions.
Step 2
1.1.2 Scientists use data to calculate the total amount or tonnage of fish that can be caught in the following season. This is called the …
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Answer
This calculation is referred to as the Total Allowable Catch (Option A), which helps in sustainable fisheries management.
Step 3
1.1.3 The type of wave action illustrated by X in the diagram below:
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Answer
The wave action illustrated by X is classified as Waves in the surf zone (Option C), which are characteristic of coastal areas.
Step 4
1.1.4 Which ONE of the following sequences correctly represents the adaptations used to overcome the anoxic conditions in estuarine sediments?
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Answer
The correct sequence is C: Self-built tubes for Mud prawns, Siphons for Mussels, Pneumatophores for Mangroves, and Burrows for Blood worms. This shows various adaptations to anoxic environments.
Step 5
1.1.5 The area between the spring low tide and neap low tide marks that is only exposed for a few low tide cycles:
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Answer
This area is known as the Intermediate shore (Option B), being affected significantly by tides.
Step 6
1.1.6 Study the diagram below which illustrates the influences of...
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Answer
This question would require specific reference to the diagram provided, discussing influences such as water flow or human activities affecting the ecosystem.
Step 7
1.1.7 Which aquaculture holding system is used in inland freshwater dams?
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Answer
The aquaculture holding system used in inland freshwater dams is Ponds (Option B), which provide suitable conditions for freshwater species.
Step 8
1.1.8 During an El Niño period, which ONE of the following events does NOT take place in the Pacific Basin?
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Answer
During an El Niño period, the SE trade winds are not stronger but are often weaker, so Option A is the correct choice.
Step 9
1.1.9 A dive cylinder on a boat was filled to 220 bars at 06:00 when the temperature was 11°C. It was then left on the boat until 15:00 where the pressure in the cylinder reached 240 bars. The temperature at 15:00 would then be …
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Answer
Considering the ideal gas law, the temperature would rise significantly, making Option C: 36.8°C a plausible answer.
Step 10
1.1.10 The factor that is NOT an abiotic factor of a rocky shore:
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Answer
Producers (Option D) are biotic factors and are not classified as abiotic factors in rocky shore ecosystems.
