This question is about waves.
A diagram of ocean swell waves shows a scale drawing of the waves approaching a coast.
On the diagram, the distance between two consecutive wave crests (the wavelength) is measured to be 4.0 cm. The scale of the diagram is 1:350 (where 1 cm on the diagram represents 350 cm in real life). Calculate the real wavelength of the waves in centimetres.
State the equation linking wave speed, frequency, and wavelength.
The frequency of the ocean swell waves is 0.40 Hz. Calculate the speed of the waves in metres per second (m/s\text{m/s}m/s).
Waves on the surface of water share properties with transverse waves. State another example of a transverse wave.
The diagram below shows plane ocean waves approaching a breakwater barrier with a single gap, with a small research buoy located in the sheltered area to the side.
State the wave phenomenon that causes the waves to spread out as they pass through the gap.
Discuss how changing the width of the gap in the barrier would affect the movement of the buoy.
