Read the text below and answer the questions that follow - NSC Marine Sciences - Question 3 - 2023 - Paper 1
Question 3
Read the text below and answer the questions that follow.
DUNE REHABILITATION AT TABLE VIEW BEACH TO START IN JULY
The city plans to rehabilitate the dune system al... show full transcript
Worked Solution & Example Answer:Read the text below and answer the questions that follow - NSC Marine Sciences - Question 3 - 2023 - Paper 1
Step 1
TWO conditions that promote dune formation.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Abundance of sediment: There must be enough sand available for the dunes to form.
Onshore wind: This is necessary to transport the sand from the beach and allow it to accumulate into dunes.
Step 2
Describe TWO types of natural wind-blown sand movement that can be experienced.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Surface creep: This is the movement of sand along the ground where larger sand grains are rolled or pushed.
Suspension: This refers to the movement of lighter sand grains that are lifted into the air by wind currents.
Step 3
Why is it considered necessary to stabilise the wind-blown sediment?
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Stabilising the wind-blown sediment is essential to prevent erosion and protect infrastructure. If the sand is not stabilised, it may be blown away, causing loss of sand dunes, which are vital for maintaining beach health and providing natural barriers against flooding.
Step 4
What engineering approach is being applied in the article?
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The approach is identified as soft engineering.
Step 5
Provide evidence from the text to support your answer.
97%
117 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The text refers to actions such as reinstating dune profiles with bulldozing and the use of wind nets to stabilise the dunes, indicating a more environmentally friendly approach rather than hard infrastructure.
Step 6
Is the proposal by the deputy mayor good or poor?
97%
121 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The proposal is good as it aims to rehabilitate the dunes, thereby protecting coastal infrastructure and allowing natural processes to occur.
