Oceans

Hi this is diwei here.do you know what causes waves?If you do not know, read this piece of information.A combination of wind and the shape of the sea-bed causes waves.Wind blows then surface layers of the sea, gradually forming a rolling movement of waves.As these waves near the coast, the sea-bed interrupts their rolling movement, and they mount up and break onto the beach.On beaches with a shallow slope, the waves pile up to a great height before breaking, causing surf.out in the open sea,the waves may be very far apart,but they are closer together as they reach the shore.the highest wave ever recorded was 34m high, during a hurricane in 1933.