1 / 12

Recap Rivers

Recap Rivers. Rivers work hard. They are always E________ and moving this material downstream (T __________). Rivers are eroding down the way and across the way. This makes the river D_________ and W_________ .

alameda-garza
Download Presentation

Recap Rivers

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Recap Rivers Rivers work hard. They are always E________ and moving this material downstream (T __________). Rivers are eroding down the way and across the way. This makes the river D_________ and W_________ . One place along the river where erosion is obvious is at the features called W_____________ . Waterfalls are _________ (write a definition of waterfalls using your notes) ______________ .

  2. River Structure

  3. Upper Course Waterfall and Gorge 1 (OBLIQUE AERIAL VIEW) EROSION TYPE: Vertical and Headward

  4. Upper Course Waterfall and Gorge 2 (PROFILE VIEW) EROSION TYPE: Vertical and Headward

  5. Middle Course Also known as the ‘Mature’ stage Meanders 1 (Aerial View) Meanders are formed because the current swings to the outside of a bend and concentrates the erosion there. Deposition occurs on the inside of the bed where there is not enough energy to carry load. EROSION TYPE: Lateral

  6. Middle Course Meanders 2 (Profile View / Cross Section X - Y) EROSION TYPE: Lateral This cross section clearly shows the eddy current (near ’X’) formed by the velocity of the river being concentrated on the outside of the bend. These UNDERCUT the bank causing the formation of a RIVER CLIFF. On the inside (NEAR ‘Y’), a SLIP-OFF-SLOPE is formed where current is too slow to carry any load.

  7. Middle Course Ox-Bow Lake 1 (Aerial View) Ox-bow lakes are formed when two meander RIVER CLIFFS are being eroded towards each other. These will eventually meet, causing the river to then flow across the bottom of the diagram. EROSION TYPE: Lateral

  8. Middle Course Ox-Bow Lake 2(Aerial View)

  9. What's the Point of all This? Can you work out what the river is trying to do by using this diagram?

More Related