Types of Coastlines Flashcards Preview

Earth Science > Types of Coastlines > Flashcards

Flashcards in Types of Coastlines Deck (34)
Loading flashcards...
1

which is the most common type of coastline in the world?

rocky coast

2

Rocky coasts consist of...

a wave-cut cliff
a lower bench area

3

the lower bench area of rocky coasts forms from...

material that erodes off of the cliff and accumulates and is eroded and taken away by wave action.

4

what are some features/characteristic landforms of rocky coasts?

arches, stacks, caves, notches

5

features of rocky coasts form by _____ action and ______

wave, erosion

6

As arches further erode they become...

stacks

7

Waves action is constantly undercutting cliffs which causes....

collapses and landslides that accumulate on the benches

8

where do collapses and landslides accumulate?

on the benches

9

Coastal rocky cliffs erode at the _____ and cause _______

base, landslides

10

Earthquakes can also trigger...

landslides

11

Landslides on cliff shorelines can give rise to...

giant waves

12

Beaches consists of wave-washed _______ along a coast

sediment

13

barrier islands are formed along...

lowland coasts

14

what are some ways shoreline erosion mitigated?

sea walls
breakwaters
groins

15

where do delta coasts form?

where a river empties out into a larger body of water

16

In deltas is there a lot of sediment deposited?

yes

17

what is the predictable pattern of delta deposition?

courser, larger sediment deposit and settle first, smaller last

18

What are the four types of coastlines?

rocky coasts, beaches, barrier islands, deltas

19

what are reefs?

hard structures built on a shallow ocean floor

20

Reefs are hard _______ build on a _______ ocean floor

structures, shallow

21

what are reefs built from?

the shells of tiny animals called polyps

22

reefs are built from the shells of tiny animals called _____

the shells of tiny animals called polyps

23

what are polyp shells made of?

limetone

24

what are the two types of reefs?

barrier reefs
fringing reefs

25

Barrier reefs are _______ from land by a lagoon

separated

26

What are barrier reefs separated from land by??

lagoons

27

Fringing reefs form coastlines that...

closely border the adjacent land

28

which reef forms closer to the land?

fringing reefs

29

reefs can only exist in water between ___ and ___ degrees Celsius

18 30

30

where are reefs often found?

in places where deep sea upwellings currents provide ample nutrients for the reef