NSC Marine Sciences The Physical and Chemical Properties of Water: Read the text below and answer t

Question

Read the text below and answer the questions that follow.

A deeper understanding of the characteristics of water waves is essential for designing efficient electricity harvesting devices. In particular, the orbital motion of wave particles has been of interest.

An experiment was conducted by varying the depth in a wave channel (see image below). This was done to determine the wavelengths and wave power at different depths.

The following method was used in this investigation:

- Sea water was added to the wave channel.
- A wave maker was attached to the channel to generate waves.
- The depth of the water was controlled.
- Four channel depths were used:
  - 240 mm
  - 260 mm
  - 280 mm
  - 300 mm

The data collected for this study are indicated in the table below.

| DEPTH (mm) | AVERAGE WAVELENGTH (m) | AVERAGE WAVE POWER (J.s⁻¹) |
|------------|-------------------------|----------------------------|
| 240        | 0.06                    | 10                         |
| 260        | 0.07                    | 8                          |
| 280        | 0.10                    | 5                          |
| 300        | 0.12                    | 4                          |

2.1.1 Draw a composite graph showing two separate lines to illustrate the data of the investigation indicated in the table above. Show ALL calculations.

2.1.2 What would the maximum depth of orbitals be if waves were formed at the depth of 300 mm? Show ALL calculations.

2.1.3 Describe the relationship between depth (mm) and average wavelength (m) as determined by this study.

2.1.4 (a) Referring to the data, at which depth will the mechanism be most efficient?
(b) Explain your answer to QUESTION 2.1.4 (a).

Read the text below and answer the questions that follow - NSC Marine Sciences - Question 2 - 2024 - Paper 1

Worked Solution & Example Answer:Read the text below and answer the questions that follow - NSC Marine Sciences - Question 2 - 2024 - Paper 1

Draw a composite graph showing two separate lines to illustrate the data of the investigation indicated in the table above. Show ALL calculations.

What would the maximum depth of orbitals be if waves were formed at the depth of 300 mm? Show ALL calculations.

Describe the relationship between depth (mm) and average wavelength (m) as determined by this study.

(a) Referring to the data, at which depth will the mechanism be most efficient?

(b) Explain your answer to QUESTION 2.1.4 (a).

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