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Flashcards in Humanities 6 Deck (40):
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Define Aeolian Transport

This is when wind moves the sand. Wind picks up sand particles and carries them in the air until gravity takes them. When a sand particle crashes into the surface, it dislodges other particles allowing the wind to carry them and so continues the process.

1

Define Arches

A natural curved opening through a rock, caused by wave action

2

Define Backwash

The backwards movement of water and sand down the beach front

3

Define beach

A deposit of loose eroded material along a coast

4

Define blowout

A hollow formed in a region of shifting sand by the action of wind OR dune blowouts occur when loose sand is blown from a dune as vegetation has been removed

5

Define blowhole

The opening of a roof in a sea cave

6

Define caves

A natural opening formed at the base of a sea cliff

7

Define deposition

The act or process of depositing, to lay or throw down by a natural process

8

Define Constructive wave

Flat waves building up a beach

9

Define destructive waves

Steep, frequent waves that erode a beach

10

Define erosion

The process in which a surface is worn away by the action of water and wind

11

Estuary

The inlet of the sea at a lower end of the river

12

What is a groyne

small walls built along a beach to stabilise the sand supply and stop long shore drift.

13

Define headlands

Steep, rocky pieces of land jutting out to open sea

14

Define hydraulic action

Air that is trapped between the headland and the waves that is compressed and forced into cracks in the rock, eroding it

15

Define lagoon

A pond of water separated from the sea by a strip of land

16

Define long shore drift

The movement of sand parallel to the beach

17

Define long term changes

Changes that occur over a relatively long period of time due to contributing factors

18

Define notch

A deep narrow cut, often at the base of a cliff, formed by wave erosion

19

Define sand bar

A long narrow sand bank that stores sand off shore

20

Define Sand dunes

Deposit of wind blown sand at the back of the beach

21

Define berm

An accumulation of sand at the back of the beach, also known as the sun bathing area

22

Short term changes

Changes that occur over a relate let short period of time

23

Define spit

A narrow ridge of sand formed at a river mouth

24

Define stack

A pillar of resistant rock, a remaining portion of a collapsed arch

25

Define swash

Sand and water coming up onto the beach

26

Define tombolo

A sand bar linking and island to the mainland

27

Define vegetation

The plant life of the beach

28

Define wave cut platform

A platform at the base of a cliff, caused by wave action as the headland has retreated

29

Define waves

A disturbance on the surface of the sea forming a moving ridge

30

Define wave erosion

Wearing away land at the base of cliffs caused by waves

31

Define wind

Air that moves horizontally in a natural motion

32

Define cliff

Steep wall of rock facing the sea

33

Define Ria

A long narrow inlet caused by the partial submergence of a river valley

34

Define Fjord

A steep sided drowned valey

35

Define raised beach

An ancient beach that is stranded above the current sea level

36

Define Corrosion

Dried sea water that leaves salt on the rocks that then weakens them leaving them brittle and more easily eroded by future waves

37

Define Corrasion

Eroded material already removed from the headland that acts as an abrasive when the waves hit he rock so to wear it away

38

What are sea walls

Walls constructed along a beach usually where dunes were or where erosion is likely to occur. They are designed to protect property and areas of the foreshore from wave attack and erosion

39

What are off shore break waters?

Large concrete blocks and boulders located off shore often to protect boats and harbours from large waves