Natural SystemCoastal Features of Erosion

By Yanique GordonGroup 2c6

ID:102168470

Title Page

Institution: The Mico University

College

Course: Advance Application for

the 21 Century classroom

Name: Yanique Gordon

Id # : 102168470

Date : December 13, 2013

Major: Geography

Coastal Features of Erosion

Grade 9

Content

Objectives

Rationale

Coastal Erosion

Landforms of Costal Erosion

Headlands and Bays

Cliffs and Waves cut platform

Constructive/Destructive

Wave

Waves

Introduction

Caves, Arch, Stack and

Stump

Additional Information

Quiz

Conclusion

Reference

Click on the links to research

Objectives

At the end students must be able to:

General Objectives: Understand that landforms was created by costal erosions

Specific Objectives:• Explain waves • Differentiate between wave types • Name and identify coastal landforms• Describe the different landforms

Rationale

• It is important for students to understand and

appreciate the environment in which they

live. The processes of coastal erosion is

naturally dynamic and often impact the

ecological environment. This PowerPoint

allow students to interact as well as promote

independent learning.

Introduction

Earth has changed! The indentation in mountains and boulders that you see in the water, passing the coast were once apart of mountains. You may believe that they look like they've been there forever, but the truth is that they a result of erosion. The effects of waves have left exposed areas to erosion creating different landforms along the coast.

Waves

• Most Waves are formed by wind blowing across the surface of the sea. Waves shape landforms through erosion transportation and deposition.

• The movement of surf waves up the shore is known as swash. The swash takes sand particles up the beach

Constructive/Destructive Wave

• Then the water starts to flow back down the beach. This is back wash of the waves; it drags sediment from the beach into the water

There are two types of breaking waves:

1. Constructive Wave- these waves help build beaches

2. Destructive waves: these erode coastline and beaches

deconstructive and constructive waves

Click on the link below to show how breaking waves are formed:

Coastal Erosion

• Erosion is when wind, water, and ice take

away sediments of land. Sediment is

made of rocks, dirt, and earth.     

• Coastal erosion occurs along beaches

and shorelines Both wind action and water

action constantly change the boundary

between land and water.

Landforms of Coastal Erosion

• Coastal erosion takes land away forever from one area to deposit it someplace else.

• The most recognizable feature of coastal erosion are:

1) Headlands and Bays

2) Cliffs and waves cut platforms

3) 3)Cave Arch Stack and stumps

Headlands and Bays

Headlands – These are large pieces of land mass which juts out into the sea. The indented area between two headlands is known as a bay.

This video shows formation of headlands and bay. As well as give example of St Brides Bay in United Kingdom

Cliffs and Wave cut platform

cliffandwavecutsClick on the link below to show how wave-cut platform is formed:

A Wave cut platform is a narrow flat area often seen at the base of a sea cliff caused by the action of the waves Cliffs begin to form when waves attack the bottom of the rock leaving what is called a hanging notch.

Cave Arch Stack and Stumps

• Caves occur when waves force their way into cracks in the cliff face. The water contains sand and other materials, grinds away at the rock until the cracks become a cave.

• If the cave is formed in a headland, it may eventually break through to the other side forming an arch.

Cave Arch Stack and Stumps

• When the arch becomes bigger it eventually collapses, leaving the headland on one side and a stack on the other.

• The stack will be attacked at the base in the same way that a wave-cut notch is formed. This weakens the structure and it will eventually collapse to form a stump.

Additional Information

This video shows the effect of costal erosion

Click on the web addresses below for different resources on costal landformsDownloads\Stack formation (1).ppt

YouTube - How Waves Work

http://www.slideshare.net/expattam/lithosphere-coasts

Quiz

Multiple Choice

Question 1

What is Costal Erosion?

a) The wearing away of the land

b) The falling of a cliff

c) The wearing away of land by the sea

d) The movement of the waves

YESYOU ARE CORRECT

!!!!!

Incorrect

• Question 2

The movement of water up the shore is known as

a) Backwash

b) Wave length

c) Swash

d) Swells

YESYOU ARE CORRECT

!!!!!

Incorrect

• Question 3

Identify the landform in the picture

a) Headland

b) Stack

c) Stump

d) Cave

• Question 4

Identify the landform

a) Beach

b) Cave

c) Arch

d) Bay

Conclusion

• Erosion not only shapes our planet's surface, but it affects the environment in numerous ways as well. This process, known as erosion, is gradually wearing down the coastline. Erosion can move mountains and create formations such as arches, headlands and so on

Reference

• Wilson Mark(2005).Natural System. The Caribbean Environment for CXC Geography. (pg 56-61)

• Anthony Bennett (2009). Coast Menu. Retrieved from http://www.geography.learnontheinternet.co.uk/topics/waves.html

The End !!!