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Flashcards in Chapter 20 Deck (43):
1

A long, elongate ridge of sand that parallels the coast

Barrier island

2

A sandbar that completely crosses a bay, sealing it off from the main body of water

Bay mouth bar

3

An accumulation of sediment found along the landward margin of the ocean or lake

Beach

4

The transport of sediment in a zigzag pattern along a beach, caused by the uprush of water from obliquely breaking waves

Beach drift

5

The wet, sloping surface that extends from the berm to the shoreline

Beach face

6

A process in which large quantities of sand are added to the beach system to offset losses caused by wave erosion. Building beaches seaward improves beach quality and storm protection

Beach nourishment

7

The dry, gently sloping zone on the back shore of a beach at the foot of coastal cliffs or dunes

Berm

8

A structure that protects a near shore area from breaking waves

Breakwater

9

A heavy sea wave that breaks into white foam on the shore or a shoal

Breakers

10

A strip of land that extends inland from the coastline as far as ocean- related features can be found

Coast

11

The coasts seaward edge. The landward limit of the effect of the highest storm waves on the shore.

Coastline

12

The movement of tidal current away from the shore

Ebb current

13

A clash where land formally below sea level has been exposed by crustal uplift or a drop in sea level has been exposed by crustal uplift orbs drop in sea level or both

Emergent coast

14

A funnel shaped inlet of the sea that formed when a rise in sea level or subsidence of land caused the mouth of a river to be flooded

Estuary

15

The portion of the shore that lies between the normal high and low water marks; the intertidal zone

Foreshore

16

A short walk built at a right angle to the sea shore to trap moving sand

Groin

17

A pair of structures extending into the ocean at the entrance to a harbor or river that are built for the purpose of protecting against storm waves and sediment deposition

Jetty

18

A near shore current that flows parallel to the shore

Longshore current

19

A terrace formed along a seashore by the merging of wave cut and wave built terraces

Marine terrace

20

The lowest tidal rang, occurring near the times of the first and third quarters of the moon

Neap tide

21

The zone of a beach that extends from the low tide shoreline seaward to where waves break at low tide

Nearshore

22

The relatively flat submerged zone that extends from the breaker line to the edge of the continental shelf

Offshore zone

23

An arch formed by wave erosion when caves in opposite sides of a headlined unite

Sea arch

24

An isolated mass of rock standing just offshore, produced by wave erosion of a headland

Sea stack

25

A barrier constructed to prevent waves from reaching the areas behind the wall. It's purpose is to defend property from the force of breaking waves

Seawall

26

Seaward of the coast, a zone that extends from the highest level of wave action during storms to the lowest tide level

Shore

27

The line that marks the contact between land and sea. It migrates up and down as the tide rises and falls.

Shoreline

28

Am elongate ridge of sand that projects from the land into the mouth of an adjacent bay

Spit

29

The highest tidal range. Occurs near the times of the new and full moons

Spring tide

30

A coast whose form is largely a result of the perils drowning of a former land surface due to a rise of sea level or subsidence of crust, or both

Submergent coast

31

The inner portion of the shore, lying landward of the high-third shoreline. It is usually dry, being affected by waves only during storms

Backshore

32

A collective term for breakers; also the wave activity in the area between the shoreline and the outer limit of breakers

Surf zone

33

The alternating horizontal movement of water associated with the rise and fall of the tide

Tidal current

34

A delta like feature created when a rapidly moving tidal current emerges from a narrow inlet and slows, depositing its load of sediment

Tidal delta

35

A marshy or muddy area that is alternately covered and uncovered by the resigned fall of the tide

Tidal flats

36

The periodic change in elevation of the ocean surface

Tide

37

A Ben n or shelf along a
Shore At sea level, cut by wave erosion

Wave-cut platform

39

A seaward facing cliff along a steep shoreline formed by wave erosion at its base and mass wasting your

Wave-cut cliff

40

The vertical distance between trough and crest of a wave

Wave height

41

The horizontal distance separating successive crests or troughs

Wavelength

42

The time interval between the passage of successive crests at a stationary point

Wave period

43

A change in direction of waves as they enter shallow waters the portion of the wave in shallow water is slowed, which causes the waves to bend and align with the underwater contours

Wave refraction

44

A ridge of sand that connects an island to the mainland or to another island

Tombolo