NSC Marine Sciences The Marine Environment: Various options are provided as

Question

Various options are provided as possible answers to the following questions. Choose the answer and write only the letter (A-D) next to the question numbers in the ANSWER BOOK, e.g. 1.1.1 to 1.1.10.

1.1.1 The highest proportion of chemical elements in sea water is...
A. calcium and magnesium ions.
B. potassium and magnesium ions.
C. sulphate and chloride ions.
D. sodium and chloride ions.

1.1.2 The image below represents a type of wave.

The image represents a...
A. spilling wave.
B. tide wave.
C. plunging wave.
D. Belsens wave.

1.1.3 The image below shows an aquaculture system.

Which type of aquaculture system is shown?
A. Fish culture cages.
B. Reservoirs.
C. Recirculating systems.
D. Fish pens.

1.1.4 Which option is NOT a benefit of sustainable aquaculture?
A. Lowering carbon emissions.
B. Creating employment opportunities.
C. Low environmental impact.
D. Reduces genetic diversity.

1.1.5 A decrease in the Catch Per Unit Effort (CPUE) means that...
A. fewer fish are being caught with less effort.
B. more fish are being caught with the same effort.
C. fewer fish are being caught with the same effort.
D. more fish are being caught with more effort.

1.1.6 The diagram below represents the transformation of wave energy.

Which phenomenon is indicated by the arrows in the diagram?
A. Refraction.
B. Reflection.
C. Diffraction.
D. Breakers.

1.1.7 Some of the variables below contribute to the formation of rip currents.
Which combination contains only CORRECT variables for controlling a rip current?
A. (i), (ii) and (iv)
B. (ii), (iii) and (v)
C. (i), (ii) and (v)
D. (i), (ii), (iii) and (iv).

1.1.8 Which renewable ocean electricity harvesting solution is currently being applied along sections of the South African coast?
A. Tidal.
B. Geothermal.
C. Wind.
D. Ocean thermal.

1.1.9 Which combination of the Köppen-Geiger climate classification indicates the CORRECT meaning for each letter symbol?
1st letter: A Distance from the equator.
2nd letter: The heat level of the region.
3rd letter: Season when the region is dry.
A. less than 1000m.
B. greater than 1000m.
C. Season when the region is humid.
D. Temperature is a dry season.

1.1.10 Refer to the illustration below and consider the following options:
(i) Polar molecule
(ii) Consists of two elements
(iii) Non-polar molecule
(iv) Linear shape
Which combination of options about the molecule illustrated above is INCORRECT?
A. (i) and (ii)
B. (ii) and (iii)
C. (iii) and (iv)
D. (i) and (iv)

Various options are provided as possible answers to the following questions - NSC Marine Sciences - Question 1 - 2024 - Paper 1

Worked Solution & Example Answer:Various options are provided as possible answers to the following questions - NSC Marine Sciences - Question 1 - 2024 - Paper 1

1.1.1 The highest proportion of chemical elements in sea water is...

1.1.2 The image below represents a type of wave.

1.1.3 The image below shows an aquaculture system.

1.1.4 Which option is NOT a benefit of sustainable aquaculture?

1.1.5 A decrease in the Catch Per Unit Effort (CPUE) means that...

1.1.6 The diagram below represents the transformation of wave energy.

1.1.7 Some of the variables below contribute to the formation of rip currents.

1.1.8 Which renewable ocean electricity harvesting solution is currently being applied along sections of the South African coast?

1.1.9 Which combination of the Köppen-Geiger climate classification indicates the CORRECT meaning for each letter symbol?

1.1.10 Refer to the illustration below and consider the following options...

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