Geomorphology A (spring 2016) Flashcards
All rivers in the world flow?
downhill
Foreset beds of mud settled out at the Mississippi river delta are valuable economically because
they contain trapped crude oil
What is a Stream bed composed of many sand bars and have small water channels around them?
They have steep gradients and erodible banks
Braided Streams
The faster the river velocity the ______
The more erosion is likely to occur.
The more sediment is likely to move as the river’s load
The larger sediment size the river can suspend and move
The point where 2 streams join into one is called a _____
confluence
know the life of an oxbow
- A meandering stream is born
- meander grows
- Mature oxbow
- oxbow is cut off
- meander fills to form an oxbow lake
Small streams on a delta are called _____. They are a rivers attempt to flow over the sediment dumped at the end of the river.
tributaries
Water going from water vapor to liquid water is called?
condensation
Water going from liquid water to water vapor is called?
evaporation
Water going from solid water to water vapor is called?
sublimation
Water going up the roots of plants a liquid and leaving as water is called?
evapotranspiration
Water soaking into the ground after a rain to become drinking water is called?
infiltration
What did we measure the average gradient of the Mississippi to be ______
.5 pounds per square inch
Why did the meander stop developing and incise into the prairie to make the Grand Canyon
The canyon floor was uplifted under the river
What conditions make a Braided stream?
Large gradients
cohesive river banks held together by plant roots
A wide floodplain and a single channel
