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3/12 – Today you have a test! Get out your notes and study!

3/12 – Today you have a test! Get out your notes and study!. DSQ #3 – What do deltas, bars, and sand dunes all have in common?. Lets Review!. What is the difference between a u-shaped valley and a v-shaped valley?. U – Shaped is made by glaciers. V-shaped is made by rivers. Rill – Smallest

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3/12 – Today you have a test! Get out your notes and study!

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  1. 3/12 – Today you have a test!Get out your notes and study! DSQ #3 – What do deltas, bars, and sand dunes all have in common?

  2. Lets Review! • What is the difference between a u-shaped valley and a v-shaped valley?

  3. U – Shaped is made by glaciers. V-shaped is made by rivers.

  4. Rill – Smallest • Gully – Next smallest • Stream – Larger • River Largest

  5. Abrasion • A form of erosion that results in pitted or smoothly polished rocks.

  6. Where is chemical weathering more rapid? • In moist, warm air

  7. What do deltas, bars, and sand dunes have in common? • They all are created because sediment accumulates.

  8. What is a delta? • A landform created when sediment accumulates in large amounts at the mouth of a river.

  9. Mechanical Weathering • Animals • Ice wedging (freezing and thawing) • Plant roots • NOTICE: Sunlight DOES NOT cause weathering!

  10. Chemical Weathering • Acids • Oxidation (When iron is exposed to water and oxygen)

  11. Canyons • Formed by streams (water)

  12. AND • WATER IS THE MOST IMPORTANT AGENT OF EROSION!

  13. Rock Flour • A fine powder left behind when GLACIERS scrape rock.

  14. SOIL • A mixture of organic matter, weathered rock, air, and water. • It is affected by organisms, parent rock type, and climate.

  15. Deflation • WIND picks up small sediment and leaves behind larger sediment.

  16. LOESS • Silt that is carried by the wind then deposited

  17. MASS MOVEMENT • Creep – slowly moves downhill • Mudflow – sediment mixes with water • Slump – along a curved surface • Rockslide – break loose and fall

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