ErosionDirections:

- Click “Slide Show” then “View Show” to view the power point.

-Record all notes and complete all tasks in your notebook.

- If a page doesn’t have a directions box like this, just get the notes.

Erosion

• Erosion - the removal of ground materials (soil, sand, rocks) by water or wind.

Taking rocks, soil, and/or sand from one place…

… and depositing them somewhere else.

Types of Erosion

1. Glaciers a large, slowly moving, river of ICE

Glacier Example: Iceland

- Glaciers are very powerful.

- They carve out huge chunks of land forming canyons and valleys thus creating mountains out of flat land.

Glaciers – how they form1. Explain how glaciers

form.

2. Describe the climate that can support glaciers.

Effects of GlaciersAppalachian Mountains – Old Glacial Effects

Alaska – New Glacial Effects

2. Wind Erosion - wind blows sand and small particles

- This exposes the larger rocks below and smoothes them down.

Wind Erosion

• Causes dust storms

• Harms crops

- Copy the effects of Wind Erosion

- What would be the economic effect of wind erosion? Create a real example to demonstrate your answer.

3. Water Erosion (2 types)

A. Rivers rivers cut through rock

carving out canyons

3. Water Erosion – 2 types

B. Coastal Erosion – occurs when waves carry beach land

out to sea

Sketches

• Sketch each type of erosion in your notebook.

• Label each type.

On the move…

- You just got offered a job making $20 Million a year as a professional video game player, IPOD tester, internet surfer…

- However, you are forced to move to one of the three locations marked on the maps on the next slide.

- Unfortunately, each town you have to choose from is in a high erosion area.

Task (only complete this once) 1. Which town would you MOST like to live in? 2. Explain why. 3. Which town would you LEAST like to live in? 4. Explain why.

Option A – Witchita, Kansas

Task (only complete this once) 1. Which town would you MOST like to live in? 2. Explain why. 3. Which town would you LEAST like to live in? 4. Explain why.

Option B – Gulfport, MississippiAnnual Shoreline Change

Moderately DamagedSeverely Damaged Relatively Stable

Task (only complete this once) 1. Which town would you MOST like to live in? 2. Explain why. 3. Which town would you LEAST like to live in? 4. Explain why.

Option C – Glacier Bay, Alaska