A6+-+Coasts+and+Man

Why Does the Coastline Constantly Change? Unit Question: Can We Do Better Than King Canute? Area of Interaction: Environments Assessment : Exam and write up of field work - data collection and presentation.

In this unit we will be looking at erosion and weathering and its effect on various mostly coastal landforms. We will then look at the various ways in which the Coastline is used by humans. Next we will look at the pressures on the coast and how both physical and human factors are affecting the Coastline. In this we will be looking at potential problems caused by global warming. Lastly we will look at how coastlines can be managed, If time allows we will try and incorporate a field trip to different parts of the island to consider some of the processes at work and measure them.

This lesson will look at the difference between Weathering and Erosion and look at what are the different types of Weathering.
 * 1: What are the main Physical Forces of Change**

Main Resources:Page 6 and 7 of Horizons 2

media type="custom" key="5901917" Source www.geographyalltheway.com

**Coasts** b) Create a spider diagram to show the different ways that humans use the coastline.You can use pictures to help improve it. If you want you could use the photos below as an idea. However there are many many others. media type="custom" key="5902569"
 * Homework**
 * 1:**a) Almost 66% of the worlds Population lives 150km from the sea. Why is this


 * Mark is out of 10** - **Criteria C Skills** - The greater the level of research and use of pictures, words, case studies and depth the higher the level.

**What Processes Affect a Cliff?** **Weathering** ** Biological, Chemical and Physical Processes weaken the top of cliffs. Describe what each are? (page 6 on Horizons 2) **

**Coastal Erosion** media type="youtube" key="YqFQOvaAXE4" height="385" width="480"

**Processes of Coastal Erosion**
- main resource booklet

Look at the following link []lThen write in your books the meaning of the following. For each accompany it with a diagram. S**olution:** Sea water is slightly acidic and therefore it dissolves rocks, in particular softer rocks such as limestone.
 * Corrasion:** This is the process where rocks, pebbles and sand in the waves are thrown against cliffs and they wear them down like sandpaper.
 * Attrition:** This is the process when rocks bang into one another and wear away the edges. This is why beach pebbles are so smooth.
 * Hydraulic Action:** This is the force of waves entering cracks in rocks. The air is compressed and then as the wave retreats the air expands with explosive force breaking fragments of rock off.


 * Question 3 and 4 on page 6.**


 * Cliff Retreat and Wave Cut Platforms**


 * Headlands and Bays:** Draw an annotated diagram to describe how headlands and bays are formed. Write a paragraph using the guide on the pages to explain it.

Do Worksheet 1.8 into your books.
 * Stacks, Stumps, Arches:**

Question 1, 2, and 4 on page 9 into your books   media type="custom" key="5988379" media type="custom" key="5955515"
 * Mapwork Tasks: **


 * Making a Flipbook : **You need to create a flipbook to show the process of cliff retreat and the formation of stacks and stumps. It needs to be really good and colourful. You can do it yourself or use worksheet


 * Processes of Transportation and Deposition** - Most of this is a result of //**Longshore Drift**// on the Coastline.

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media type="googlemap" key="http://maps.google.com/maps?q=google+maps+blakeney+marsh&ie=UTF8&hl=en&sll=52.973764,1.002159&sspn=0.050548,0.110378&split=1&filter=0&rq=1&ev=zo&radius=2.3&hq=google+maps+blakeney+marsh&hnear=&ll=52.973764,1.002159&spn=0.050548,0.110378&t=h&output=embed" width="425" height="350"
 * How is Longshore Drift Responsible for the landform below, which is called a SPIT?**

Cliff Collapse - Causes and Effects on People
media type="custom" key="6035127"

media type="custom" key="6087981" You need to a) Call it the Scarborough Daily News b) Start with a good introduction c) You need to give some good eyewitness accounts. You could use some quotes from your presentation You must have real information. e.g. What was the name of the owner of the place. d) You must give reasons for why it collapsed - for this you need to look at the following reasons, WEATHER. GEOLOGY. SEA and also think about the role of the COUNCIL who had not upgraded any of the coastal walls or defences at the bottom of the cliff.
 * Task: Using the information from the book and the presentation that you have made in a group, you need to now produce a newspaper article about this landslide.**


 * Task 2:** On a follow up page, you need to add a little update with a picture. Call it Holbeck Hall -17 years later. You need to show what it is like now and what the local council have done to prevent the cliff from sliding anymore. You could annotate a photo or write a little bit next to the photo explaining what has been done, how much it cost and how it will work.

**A Landslip in Barbados - Could it really happen.**
Link to a story about the great 1901 landslip