Coasts

Question 1

What are destructive waves

Answer 1

They tend to erode the coast

Question 2

what are constructive waves

Answer 2

they break on the shore and deposit material, building up beaches

Question 3

Characteristics of destructive waves

Answer 3

.Taller than constructive waves

.Stronger backwash than constructive waves

Question 4

Characteristics of Constructive waves

Answer 4

.Longer than destructive waves

.Stronger swash than destructive waves

Question 5

What is longshore drift

Answer 5

movement of pebbles along the beach, along the waves. pebbles collide with other pebbles and erode making beach smaller

Question 6

What are sea walls

Answer 6

verticle concrete barriers. reflect wave energy back out the sea. protect cliff from erosion.

Question 7

What are rip rap

Answer 7

boulder of hard rocks in front of sea wall. it dissipates the wave energy. protects inland areas from erosion

Question 8

What are groynes

Answer 8

wooden barriers built across beach. trap sand and make beach wider. protects inland areas from flooding and erosion

Question 9

what is hard engineering

Answer 9

people build in between coast and land.