ACTIVATE
Complete the descriptions using the information cards.
How do waves form?
Waves are formed when ____________ ____________ over
the sea. This causes ____________ with the ____________
of the water which results in the formation of small
____________ which develop into ____________. The
____________ the ____________ ____________ over water
is known as the ____________. The longer the
____________, the more ____________ the wave.
Waves can also form when ____________ and
____________ eruptions shake the seabed. These types of
waves are called ____________ waves.
What happens as the wave approaches the coast?
Despite the wavy surface in the open sea, there is ____________ ____________ movement of
water. This only occurs when the waves ____________ and ____________ up the beach.
As the water starts to get ____________, the seabed interrupts the ____________ motion of the
waves making them more ____________. This causes the ____________ of the wave to rise
upwards and eventually ____________ onto the beach. The water that rushes up the beach is
known as the ____________, the water that flows back towards the sea is known as the
____________.
1) Draw an arrow on the diagram to show the direction of the waves.
2) Add the labels swash and backwash in the correct boxes.