Hydraulic action is the force of waves compressing air in cracks of cliffs.
Answer
True
False
Question 2
Question
Swash is the movement of waves __________________________________ .
Answer
onto the beach.
back into the sea.
Question 3
Question
Gabion cages are [blank_start]metal[blank_end] cages filled with large rocks and [blank_start]pebbles[blank_end]. The waves hit the cage and the rock soaks up the energy which results in [blank_start]less[blank_end] erosion.
Answer
less
more
the same amount of
metal
plastic
steel
pebbles
chocolate
sand
more sand
water
Question 4
Question
Offshore breakwater - a large rock built as a barrier ___________________, to make the waves break.