7.1
Breakwaters - A barrier built out into the sea to protect a coast or harbour from the force of waves.
Faecal coliform - aerobic bacteria found in the colon or faeces, often used as indicators of faecal contamination of water supplies.
Silting - A sedimentary material consisting of very fine particles intermediate in size between sand and clay.
Tidal Flushing - action of saltwater entering an estuary twice a day during the high tides.
Sea change - Sea Change is when people move from the city to start a new life by the sea
Urban stormwater – pure rainwater plus anything the rain carries along with it.
Dredging - Clean out the bed of (a harbor, river, or other area of water) by scooping out mud, weeds, and rubbish with a dredge.
Introduced plants – plants that come from difference countries
7.2
Ground swell - A large or extensive swell in the sea
Plunging waves – break on beaches where the slope is moderately steep.
Spilling waves – break far from the shore on beaches with gentle slopes
Surging waves – occur on very steep beaches. The waves roll up the steep face rather than breaking over it
Wind swell - waves generated by local winds
Wave height - The vertical distance between the trough and the crest of a wave
Wavelength - The distance between successive crests of a wave
Fetch - The distance traveled by wind or waves across open water
Surf - The mass or line of foam formed by waves breaking on a seashore or reef
Swash zone - an area of a beach where water washes up on shore after an incoming wave has broken.
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