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Tides and waves

backwash

noun

the movement of waves as they leave the land

billow

noun

a large wave in the sea

breaker

noun

a large wave that rolls over onto a beach

cap

noun

the top part of a wave

crest

noun

the white top of a wave

flood tide

noun

the rising of the level of the sea each day until it reaches its highest point and begins to fall again

high tide

noun

the time when the sea reaches the highest level

high water

noun

the time when the water in a lake, river, or the sea is above its normal level, especially because of a flood

high water mark

noun

a mark that shows the highest level that a lake, a river, or the sea has risen to

low tide

noun

the time when the sea is at its lowest level

low water

noun

the time when the water in a river or the sea is at its lowest level

neap tide

noun

a tide that has the least amount of change between the highest and lowest levels of the sea

ripple

noun

a small wave or series of waves on the surface of a liquid

roller

noun

a large strong wave that rolls towards the land

sea

noun

the condition of the sea, especially the way that it is affected by the weather

sea level

noun

the average level of the sea in relation to the land. The heights of parts of the land are measured from sea level

spring tide

noun

a time when there is a big difference between the highest and lowest levels of the sea

spume

noun

a white mass of bubbles on the top of a wave

surf

noun

the waves of the sea as they move onto a beach, falling to produce foam (=white water)

swell

noun

the movement of the waves in the sea

tidal wave

noun

a very large wave that causes a lot of damage when it hits the land

tidal wave

noun

a tsunami

tide

noun

the way that the level of the sea regularly rises and falls during the day. The tide comes in or rises, then it turns and goes out or falls, and then turns again. At its highest point the tide is in and it is high tide, and at its lowest point the tide is out and it is low tide.

tideline

noun

a mark left by the sea at the highest point it reaches on the land

tidemark

noun

a tideline

trough

noun

a low area between two high waves or hills

tsunami

noun

a very large wave or series of waves caused when something such as an earthquake moves a large quantity of water in the sea

undercurrent

noun

a current that moves below the surface or below another current in the sea or a river

undertow

noun

a current below the surface of the sea or a river, that moves in the opposite direction to the water above it

wave

noun

a line of water that rises up on the surface of a sea, lake, or river

whitecaps

noun

waves that are white at the top

white horses

noun

whitecaps

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the design of buildings or public spaces in a way which discourages people from touching, climbing or sitting on them …

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