Q: What has happened to each of these rocks & why?

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Presentation transcript:

Q: What has happened to each of these rocks & why? HW: Find out what type of weathering occurs at the edge of Wast Water, Cumbria and what does it form? New Topic: The Landscape! Key Question: What are the main types of weathering? A B C D Key Words: Weathering Erosion Biological Physical Chemical In-situ Q: What has happened to each of these rocks & why?

Why does this landscape look like it does? Starter Why does this landscape look like it does? What has happened to it? Watch the video Write down a definition of weathering in your margin. http://www.bbc.co.uk/learningzone/clips/how-does-weather-change-the-shape-and-appearance-of-mountains/325.html

What is weathering? Weathering is the gradual…………………………….. of rocks ……………. by physical, c………………… and …………………… processes. It releases sediment that can form ……………………….. rocks. breakdown in-situ hemical biological sedimentary Biological Weathering (by plant roots and organic acids) Chemical Weathering (carbon dioxide mixing with water in the atmosphere to make carbonic acid) Physical Weathering (by freeze/ thaw producing angular fragments)

TASK 1 Types of Weathering Now Explain each of these types in your book P.42 - Physical weathering is……. Biological weathering is….. Chemical weathering is…….

Weathering Products PAIRS TASK: Physical Weathering Produces angular fragments and will vary in size e.g. Granite PAIRS TASK: On mini WB What are the minerals in granite and how will each weather? P.44 helps Chemical Weathering Produces: Elements in solution New minerals Residue Rocks Produced?

Title: Physical Weathering TASK 3 Page 43. Title: Physical Weathering 1. Draw a series of cartoons to explain Frost Shattering. 2. Explain how exfoliation ‘onion skin’ weathering operates? Title: Chemical Weathering 1. Complete your worksheet on chemical weathering and glue it in. Extension: Why is weathering also known as landform creation?

What do you think the difference between weathering and erosion is? Erosion is the removal of broke-up rock by rivers, ice, wind, the sea and by Man!

Grey in colour contains fossils http://www.bbc.co.uk/schools/gcsebitesize/geography/rock_landscapes/processes_video.shtml Plenary Rock: Grey in colour contains fossils Fizzes with HCl By which method of weathering is this most likely to have formed and why?