This is known as cape or headlands where the refracted waves from deep region enters to shallow region causes the waves to converge and forms a rough sea with larger amplitude in size.

This is known as bay the waves are refracted from deep to shallow region and the waves are well dispersed with the size of the energy which is also known as amplitude smaller in size and the waves are calm because the waves are well dispersed.

Retaining walls are built at the bay and people at this location known as Robin Hood’s Bay builds houses higher than the sea level to avoid from sea erosion and prevents spillover of the waves

Another example of bay region. Nice for naked bathing oppsss sorry sunbathing or even a romantic walk wei jangan fikir bukan-bukan. Look at the waves which is in white colour in the picture. How does that waves could occur?

Known as cape or headland

Known as bay at where harbour jetty will be built but must have retaining wall like in Robin Hood place

Sea erosion causes the cliifs to rupture later on the houses will fall down. That is why build retaining wall

Waves starts to break once waves are refracted to shallow region and there are various ways the wave breaks, 2examples are shown beside. Once the waves are refracted the amplitude starts to increase in height causing the top of the waves which is known as crest becomes unstable falls much more further compared to the base of the waves. This is because the base of the base experiences friction along the shoreline which also can be identified as seabed meanwhile the crest of the wave still continues with its original velocity causing it to move faster and waves start to break.

Refraction- changes in velocity and wavelength when wave travels in different density medium or same medium with different depths

Reflection Diffraction- waves spread once passes through gap or obstacles in a same medium

Plane reflector

Concave reflector

Concave reflector

Shorter wavelength with obstacle

longer wavelength with obstacle

Shorter wavelength with obstacle

longer wavelength with obstacle

Car remote control tv remote control

Uses radio frequency why?

Uses near ir region frequency. Why?