Coasts - Waves

Question 1

Destructive waves

Answer 1

• erode the coast
• high amounts of energy
• very powerful waves

Question 2

Constructive waves

Answer 2

• builds coasts

- less energy is being transferred into the water

Question 3

Wave height

Answer 3

The height of a wave

Question 4

Break wave

Answer 4

-wave that changes in height or shape at the sea gets shallower when it reaches land

Question 5

Swash

Answer 5

The part of the wave that moves forward onto land

Question 6

Wave length

Answer 6

The length of a wave

Question 7

Wave crests

Answer 7

The top of the wave

Question 8

Wave trough

Answer 8

The low between 2 crests

Question 9

Backwash

Answer 9

The retreating (moving backward) of a wave
-in a destructive wave it is very strong as it takes away pieces of the land

Question 10

Waves are formed by…

Answer 10

The transfer of energy via friction due to the wind against the water

Question 11

Size of the wave is influenced by

Answer 11

The wind

Question 12

3 effects of wind that impact waives

Answer 12

• speed
• distance
• times

Question 13

Wind speed

Answer 13

• fast wind speeds result in powerful waves

- this due to the wind having more energy to transfer

Question 14

Wind duration

Answer 14

• winds length of time
• the longer the wind has been blowing the more energy the wave has
• this is because energy has been transferred over a long period of time

Question 15

Wind fetch

Answer 15

• maximum distance of open sea wind can blow over
• if the fetch is long, powerful waves are created
• because wind has larger area over which it can constantly provide energy to

Question 16

Factors of a constructive wave

Answer 16

• low wave height
• low wave frequency
• long wave length
• strong swash
• weak backwash
• flatter beach as more sediments are being added

Question 17

Factors of a destructive wave

Answer 17

• short wave length
• high frequency
• high wave height
• strong backwash
• weak swash
• steeper beach