types of rivers in deserts Flashcards
exogenous river
source is outside the desert
endoreic river
flow into deserts
terminate in a lake or the sea
ephemeral river
only flow after extreme rainfall
only flow part of the year
episodic flash flood
infrequent rainfall events that lead to large amounts of water being released at one time.
hydraulic action
force of the water crashing and breaking off material to be transported away
splash erosion
force of rainwater displacing soil particles
sheet erosion
water running as a sheet over impermeable surfaces or compacted soil washing away disturbed particles
rill erosion
sheet wash wears down the soil to form a definite path to from rivulets in the soil called rills
gully erosion
over time, rills become wider and deeper to form gullies
bank erosion
fast water flow wears away the stream sides causing the bank to collapse and the channel to widen