Coastal Processes WHAT am I? http://highered.mcgraw-hill.com/sites/0072402466/student_view0/chapter14/flashcards.html#

Wave Action 1) I add sand to a beach 2)I take sand away from a beach.

3) I am point of land that extends outwards into a body of water from a coastline; often having a steep cliff face 4) I am the Bending action of waves

5) I am also known as corrasion, occurs as waves hurl bits of rock and sand against cliffs and headlands. 6) I enters a crack in the rock and push the air deeper

I couldn’t find a better image! 7) I am a type of erosion where rock fragments break away from the rock surfaces hit against each other and erode into smaller fragments.

8) I am a type of erosion where soluble minerals dissolved by water 8) I am a type of erosion where soluble minerals dissolved by water. (limestone headlands)

Erosional Features 9) I am the first stage of wave erosion and I’m a point jotting out on the landscape. I am a result of wave refraction. You saw me earlier in this powerpoint

10) I am the second stage of wave erosion and I am the initial opening in a headland.

11) When two caves meet I a born.

12) When a sea tunnel is further eroded I am created.

13) When a sea arch drops due to the force of gravity I stand alone

                                . 14. As the steep cliff retreats landwards, a flat terrace at the foot of the cliff is exposed due to erosion at base.

DEPOSITIONAL FEATURES

15) I am the zig-zag motion of sand up along a coastline due to current and wind   http://www.youtube.com/watch?v=U9EhVa4MmEs

16) We are the structures built perpendicular to the coastline to try to keep sand in place. Courtesy: P. Mleziva

17) In addition, To prevent erosion of the coastline or to shelter boats humans build us.

18) I am the extensive deposit of sand and/or gravel in the form of a beach at the back of a bay. http://www.uky.edu/AS/Geology/howell/goodies/elearning/module14swf.swf

19) I am long and narrow accumulation of sand and/or gravel that projects into a body of ocean water. These features form as the result of the deposition of sediments by longshore drift. http://www.school-portal.co.uk/GroupDownloadFile.asp?file=21605

20) I am a narrow deposit of sand and/or gravel found across the mouth of a bay. http://highered.mcgraw-hill.com/sites/0072402466/student_view0/chapter14/animations_and_movies.html

21) I am a long, narrow islands of sand and/or gravel that are usually aligned parallel to the shore of some coasts http://geography.cst.cmich.edu/Franc1M/Animations/animation_list_posted.htm

22) I am Mr. K’s favourite coastal feature that forms when a belt sand and/or gravel is deposited between an island and the mainland. This feature is above sea-level for most of the time. (THIS IS A DEPOSITIONAL NOT EROSIONAL FEATURE)                                                                                                                                                                  

23) I am the coastal water body separating a barrier island or offshore bar from the mainland or the water trapped behind a baymouth sand bar.

Depositional Landforms Common Depositional Landforms Hooked Spit due to northward current and flow into bay Longshore Processes and Depositional Coastlines

Classifications of Coastlines   24) Do you remember me from the Glacier Unit? I am U shaped valleys leading down to the sea that have been drowned as a result of a rise in sea level. British Columbia has this type of coastline. http://www.geocities.com/Yosemite/Rapids/4233/klikfjord.htm

25) We are V-Shaped valleys created by Rivers and leading to the sea that have been drowned as a result of a rise in sea level.

Coral Reefs   Coral reefs occur in warm tropical waters where soft-bodied creatures, known as corals, produce a skeleton of calcium carbonate; when these creatures die, their skeletons form a foundation upon which new corals can grow resulting in the continual growth of the coral reef. An atoll is a Pacific circular reef enclosing a lagoon. http://www.classzone.com/books/earth_science/terc/content/visualizations/es2303/es2303page01.cfm?chapter_no=visualization More about reefs: http://oceanworld.tamu.edu/students/coral/index.html http://en.wikipedia.org/wiki/Coral_reef

Development of Atoll

Emerged versus Submerged Shorelines   15) Emerged Shorelines: the land has risen; the water has become shallower. Significance to Humans Pros: newly emerged coastal plain potentially offers an area of land for agricultural settlement; beaches and / or lagoons develop into resort areas. Cons: difficult for commercial shipping because of offshore bars and few deep water ports 16) Submerged Shorelines: land has sunk and / or the water has risen. Pros: Irregular coastlines offer sheltered, deepwater harbours which are excellent for ports Cons: Irregular coastlines hinder land transportation along the coast and rough terrain hinders human settlement Which one of the following features would not be associated with a submerged coastline? a) rias b) fiords c) spit d) offshore bar e) baymouth bar