1. Most soil in New York State is made from
1) Weathered bedrock
and dead animals
2) Human intervention
of rock materials and
accumulated water
3) Eroded rainwater
and plant remains
4) Weathered and
eroded bedrock and
organic material

2. River velocity changes with
Volume of water, gradient of land, and the Shape of the river.
Because of these factors, rivers evolve over time.

3. Evolving Rivers… Rivers begin in mountains: steep, fast, and V-shaped.
Rivers erode land and become less steep, wider and slower.

4. Which agent of erosion carved the V-shaped valley shown in the photograph?
1) River water
2) Glacial Ice
3) Mass wasting
4) Hurricane winds

8. Flooding widens, flattens, and slows the river.
Curves called MEANDERS develop.

9. Straight river is fastest in middle below surface.

10. Meandering river is fastest on the outside of the curve.

13. DEPOSITION
EROSION
EROSION
DEPOSITION

16. And from outer space…

17. Oxbow lakes

18. The map shows a meandering stream. Points A, B, C, and D
Inside of meander!
The map shows a meandering
stream. Points A, B, C, and D
represent locations along the stream bottom.
At which location is water velocity most likely the slowest?
(1) A (3) C
(2) B (4) D