mid term assessment practice yr8 Flashcards
what is interception
water perciptiation is temporaily caught by plants or leaves before reaching the ground by dripping or stemflow
what is surface storage
water is held on the surface in lakes ponds or puddles
soil moisture
water stored or held in the soil
ground water
a store of water held below the surface in the ground above the base rock
stem flow
water running down a plant stem or a trunk of a tree
infiltration
a proccess by which surface water enters the soil by filtering it through soil pores /small openings
surface runoff
the transfer of water over the surface of the ground . it is easiest to see where it forms river
through flow
the downhill transfer of water through pores and small cavites in the soil
percolation
the down ward flow of water through cracks and joints in the underlying rock
groundwater flow
the downslope movement of water through underlying rocks
scource
where a river begins
mouth
where a river meets the sea
confluence
the point at which two rivers meet
tibrutry
a small river joining a bigger one
channel
where a river flows
erosion
the process that wears away the river bed and banks.
hydraulic action
the power of the water
corrosion/solution
when minerals and salts get dissolved in the water
attrition
when the rocks bumping into each other and breaking it down
abrasion
when the large rocks get dragged across the river bed it scrapes material apart
suspension
when fine light material is carried along by the river
solution
minerals are dissolved in the water. this is chemical change
traction
large boulders and rocks are rolled along the river bed
saltation
small pebbles and stones bounce along the river bed
waterfall
when water falls over a step in the course of a river
UPPER
interlocking spur
projections of land that stick out . the river winds around these
UPPER
Gorge
steep sided almost vertical valley sides left as a waterfall retreats
UPPER
meander
when a river bends a curves
