Streams and Rivers. Carry water over land to oceans Almost ½ of the water that falls to Earth’s surface eventually ends up in a stream or river. Essential part of the water cycle Account for most of the erosion of Earth’s surface (most important agent of erosion). Chapter 13 Section 1.
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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Chapter 13 Section 1
flows to the Atlantic
flows to the Pacific
in a given amount of time
a river has
change in distance
and may flood banks
Chapter 13 Section 2
How Streams Transport Materials
3. Bed Load
The size and amount of sediment carried by a stream depends on:
•Velocity (speed of stream)
• Discharge (volume of water)
Which stream carries larger/more sediment?
vertical sorting animation
settling rate by size, shape, density animation
Horizontal sorting in a stream animation
(instead of silt and clay)
Chapter 13 Section 3
~waterfall recedes further upstream
*Ex. Niagra Falls
Chapter 13 Section 4
Features of a Floodplain
Life of a Stream
1. Small sediments are deposited where the stream slows down.
Friction causes slow down
Small Sediment (Sand)
Cross Section on next slide
Cross Sectional View of a Meander
Cuts into curve (erosion)
Profile of a Straight Section of a Stream
The river becomes so s-shaped, that the next time the river floods…
it is easier for the water to "take a short cut" and go straight across the flood plain.