External Processes Erosion Weathering Directions: - Click “Slide Show” then “View Show” to...
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Transcript of External Processes Erosion Weathering Directions: - Click “Slide Show” then “View Show” to...
![Page 1: External Processes Erosion Weathering Directions: - Click “Slide Show” then “View Show” to view the power point. -Record all notes and complete all tasks.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfc61a28abf838ca71c5/html5/thumbnails/1.jpg)
External Processes
Erosion Weathering
Directions:
- 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.
![Page 2: External Processes Erosion Weathering Directions: - Click “Slide Show” then “View Show” to view the power point. -Record all notes and complete all tasks.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfc61a28abf838ca71c5/html5/thumbnails/2.jpg)
Weathering
• Weathering - forces that are changing rocks and land over time, even day to day.
![Page 3: External Processes Erosion Weathering Directions: - Click “Slide Show” then “View Show” to view the power point. -Record all notes and complete all tasks.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfc61a28abf838ca71c5/html5/thumbnails/3.jpg)
Mechanical WeatheringMechanical weathering – when a force breaks a rock into smaller pieces by forcing them apart.
- Breaking large rocks into smaller ones
![Page 4: External Processes Erosion Weathering Directions: - Click “Slide Show” then “View Show” to view the power point. -Record all notes and complete all tasks.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfc61a28abf838ca71c5/html5/thumbnails/4.jpg)
Causes of Mechanical Weathering
• Roots growing through rocks - root wedging
• Ice gets into rocks, expands the space it inhabits – frost wedging
• Thermal expansion – rocks in deserts get heated and expand, breaking them into pieces.
![Page 5: External Processes Erosion Weathering Directions: - Click “Slide Show” then “View Show” to view the power point. -Record all notes and complete all tasks.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfc61a28abf838ca71c5/html5/thumbnails/5.jpg)
Causes/Effects of Mechanical Weathering
Directions:
-Click on the headline to bring up the website.
- Click on the pictures to make them larger. Read the captions.
-Record the examples of mechanical weathering that could occur in Houston.
![Page 6: External Processes Erosion Weathering Directions: - Click “Slide Show” then “View Show” to view the power point. -Record all notes and complete all tasks.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfc61a28abf838ca71c5/html5/thumbnails/6.jpg)
Chemical Weathering
• Chemical weathering - when something "eats away" at a rock rather than breaking it apart.
• Key Idea*** MUST HAVE A CHEMICAL CHANGE IN THE ROCKS.
![Page 7: External Processes Erosion Weathering Directions: - Click “Slide Show” then “View Show” to view the power point. -Record all notes and complete all tasks.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfc61a28abf838ca71c5/html5/thumbnails/7.jpg)
Causes of Chemical Weathering
1. Acid Rain
Directions:
- Click the mouse to bring up the 5 steps.
- Briefly explain each step of the Acid Rain process in your notebook.
![Page 8: External Processes Erosion Weathering Directions: - Click “Slide Show” then “View Show” to view the power point. -Record all notes and complete all tasks.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfc61a28abf838ca71c5/html5/thumbnails/8.jpg)
Causes of Chemical Weathering
2. Water – creates a chemical reaction in certain rocks
3. Chemicals – resulting from pollution or internal processes
Foaming pollution on rocks.
![Page 9: External Processes Erosion Weathering Directions: - Click “Slide Show” then “View Show” to view the power point. -Record all notes and complete all tasks.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfc61a28abf838ca71c5/html5/thumbnails/9.jpg)
Effects of Chemical Weathering
At PH1, this New Zealand lake is pure hydrochloric acid
Naked trees
Rust
![Page 10: External Processes Erosion Weathering Directions: - Click “Slide Show” then “View Show” to view the power point. -Record all notes and complete all tasks.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfc61a28abf838ca71c5/html5/thumbnails/10.jpg)
Analysis
1. How is mechanical weathering like a hammer?
2. Create a weathering wonderland. - Sketch a landscape that includes examples of
weathering resulting from each of the 6 causes. (3 mechanical, 3 chemical)
- Label each cause- See a sample on the next slide to help you begin.
You can steal my example for thermal expansion if you want.
- Your wonderland can have multiple rock formations.
![Page 11: External Processes Erosion Weathering Directions: - Click “Slide Show” then “View Show” to view the power point. -Record all notes and complete all tasks.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfc61a28abf838ca71c5/html5/thumbnails/11.jpg)
Rocks that have split apart due to thermal expansion.