Y8U4+Archive

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= = == = Earth Structure and earthquakes; Coasts and how they change the scenery = = =

Introduction
This half term we are looking at the Changing Earth. First of all we will look at what the structure of the Earth is like, and how it is due to this structure that movements take place, some of which give rise to Earthquakes. We will look at what an earthquake is like to go through and what can be done to help you through it as well as possible. The next section looks at ways in which the Earth’s surface can be changed and in particular, how this happens on the edge of land where it meets the ocean. For this I am hoping that most of you can arrange to go down to the seaside one week-end between week 18 and the end of half term! **Lesson 1: What is the world made of?** **PowerPoint:** **Class Notes:** **Homework:** **Links you may need** : Could not embed this video but worth a watch: [] For the break up of the continents you need to click on 'animation' - top left to start it going media type="file" key="continental drift.swf" width="468" height="351" You need to start the animation you see and then click on NEXT (right hand side) to get the next one media type="file" key="3 plate margins.swf" width="468" height="351"

I did not get around to talking mountains as evidence:
The Appalachian Mountains of North America, some mountains in Newfoundland, Northern Ireland, Scotland and Norway are all the same - they were created at the same time, they are made of the same minerals - so how come?

This is how come - can you see?


**Lesson 2: Earthquakes 1** **PowerPoint:** **Class Notes:** **Homework:**

EARTHQUAKE REPORTS here
**Lesson 3: Earthquakes 2** **PowerPoint:** **Class Notes:** **Homework:** **Links you may need** : **http://www.fema.gov/plan/prevent/earthquake/preparedness_home.shtm#1**

**Lesson 4: Coastal Processes** **PowerPoint:** **Class Notes:** media type="custom" key="8211458" width="210" height="210"

**Homework:** **Links you may need:** **Click on each type of erosion at the bottom and watch it work!** **Lesson 5: Coastal features** **PowerPoint:** **Class Notes:** **Homework: This homework is for 2 weeks to run to the end of half term. This is the alternative homework for those who cannot reach a coast.** For UK folks only - here is a great site or pictures - keep clicking on the right bit of the map near where you are hoping to find pictures - all these are copyright free. @http://www.geograph.org.uk/mapbrowse.php

Something you might like to try:
To measure longshore drift: Prepare some pebbles before you go and paint with something that will not wash off! Place something (like a cool box or similar object that will not blow away) just above the wet part of the beach. Line the stones between the wash and backwash waves in line with your object going down the beach and photograph it. Count 50 waves and take another photo from the same spot and also measure how far they have moved!

**Links you may need** : I know this is about rivers but the words and the explanations are the same: media type="file" key="erosion.swf" width="360" height="360" align="left"media type="file" key="transport.swf" width="360" height="360"

media type="file" key="wav erosion.swf" width="661" height="661"



media type="file" key="coasts.swf" width="522" height="468" **Lesson 6: Disappearing land!** **PowerPoint:** **Class Notes:** **Homework: None - still working on the long one from last week?**