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Today

Today. Get out you ESRT and a piece of paper The following questions are from your ESRT. You’ll have a minute per question…. 1. (40pt) List 4 types or agents of Erosion. 2. (10pt) ______ is when particles SLIDE along bottom rather then floating or bouncing. 3.

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Today

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  1. Today • Get out you ESRT and a piece of paper • The following questions are from your ESRT. • You’ll have a minute per question…

  2. 1 • (40pt) List 4 types or agents of Erosion

  3. 2 • (10pt) ______ is when particles SLIDE along bottom rather then floating or bouncing.

  4. 3 • (10pt) List a difference between Soil and Dirt.

  5. 4 • (10pt) What is the driving force of Erosion.

  6. Answers • (40pt) List 4 types of Erosion • Wind, Water, Gravity, Glaciers • (10pt) ______ is when particles SLIDE along bottom rather then floating or bouncing. • Creep • (10pt) List difference between Soil and Dirt. • Soil has black nutrient rich minerals in it. • (20pt) List 2 types of erosion that sort sediment. • Wind and Water • (10pt) What is the driving force of Erosion. • Gravity

  7. Streams and Rivers

  8. Vocabulary • Stream Velocity • Meander • Oxbow

  9. Stream Velocity • Stream Velocity is the speed of the water. • The streams like wind can carry particles depending on their size and sort them when deposited. • Fast = large particles (boulders) • Slow = small particles (sand)

  10. Moving water makes V’s • V shaped valleys are created by running water. • Size of the V tells us how much water and for how long. • Big V = lots of water over a long time • Small V = Little water over short time

  11. Stream Velocity • The fastest water is located in the middle of the stream away from the banks (sides).

  12. Streams Shape • Streams for the most part look like an S from space. • The faster water will erode while the slower water deposits. • Where is the fast & slow water??

  13. Streams (birth) • Young streams have few meanders. • Meanders are where the rivers turn. • Water velocity is usually high in young rivers. • Small flood plain

  14. Mature Streams or Rivers • Older rivers have lots of meanders and travels slower • The flood plain is large (Mississippi River) • Old streams have Oxbows

  15. Aging rivers • Young • Fast water, high erosion • Mature • Slower water, Moderate erosion • Old • Slow water, Low erosion

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