geography the sea

Question 1

hydraulic action

Answer 1

the power of water when it crashes against the coast

Question 2

compressed air

Answer 2

air in the rocks is trapped by the incoming waves and over time it builds up and makes the rocks shater

Question 3

wave wind

Answer 3

speed of the wind

Question 4

wave fetch

Answer 4

distance of the which the wind blows

Question 5

a destructive wave is a

Answer 5

wave this a weak swash and strong backwash

Question 6

a constructive wave is a ..

Answer 6

wave with a strong swash a weak backwash

Question 7

when do these waves occur

Answer 7

destructive in winter and constructive in summer

Question 8

what is longshore drift

Answer 8

it is when waves move up at an angle with the swash and back at an 90 degree angle with the backwash in a zig zag movement and over time sediments build up

Question 9

longshore drift is A)deposition or B)erosion or C)transportation

Answer 9

C)transportation

Question 10

explain bays and headlands

Answer 10

it is when soft and hard rock face the cost and the soft rock erodes faster causing a indent known as a bay and the pieces of hard rock sticking out is known as headlands it is a form of erosion

Question 11

what is a tombolo

Answer 11

it is when 2 waves hit and the cancel out each other and loose energy , this causes deposition between the offshore island and the mainland over time it builds up connecting them. it is a feature o deposition

Question 12

what is a rock armor/boulders

Answer 12

rock armor is a large boulder placed at the bottom of sand dunes or cliffs to prevent the erosive power of waves

Question 13

what are sea walls

Answer 13

sea walls are walls build at the back of beaches to protect costal towns or areas of high economic value from the sea, the walls are usually curved or sloped at the top, this forces the wave to break back on the next incoming wave thus breaking its power