Geography Flashcards
Outside bend
Water flows fastest
Inside bend
Water flows slowest
River sediments
Objects found in a river. (Rocks)
River velocity
How fast or slow a river flows. (M/sec)
Watershed Souse of the river Drainage basin Tributaries Confluence Mouth
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Precipitation
Anything that falls from the sky
Interception
The trees catch the rain and intercept it
Infiltration
Water goes from the surface to the soil layer
Percolation
Water goes from the soil layer to the ground rocky layer
Surface run - off
Water runs on the top of the surface because the ground is to dry or to damp for it to infiltrate. It runs into a river or stream
Soil moisture flow
The water flows on the soil layer it runs into a river or stream
Ground water flow
Water flows slowly on the ground layer and into a river or stream
Permeable rock
Softer rock that lets water run through it
Impermeable rock
Harder rock no water passes through it
Causes of rivers flooding
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Impermeable rock causes flooding because
Doesn’t let water throw it so it sits on top of it
Deforestation causes flooding because
There is no interception from the trees
Urbanisation / storm drains causes flooding because
Drains fill up quickly then flood
Saturated soil causes flooding because
No more water can go into the soil so it sits on top
Dry soil
It is too hard to infiltrate so it sits on top of the dry soil
