running Water Test Flashcards
water cycle
the unending circulation of earths water supply
The world water budget is in balance because
precipitation equals evaporation
local water budgets are
not balanced
what use the greatest amount of water
agriculture and industry
how much of this water that’s used is return to rivers lakes oceans etc.
90%
waste water treatment
remove as much suspended solids as possible before the remaining water called effluent is discharged back to the environment
Nonpoint sources of pollution
sedimentation and stormwater runoff
River systems
watershed, tributaries, divide, headwaters
watershed
land from which water runs off into streams – drainage basin
tributaries
feeder streams that flow into a main river
divide
ridges or elevated regions of higher ground that separate watersheds
headwaters
beginning of a stream
drainage patterns
water can travel in a variety of patterns – radial, rectangular, trellis, dendritic
Radio
streams radiate out words from a central High Point
rectangular
shape determined by underlying rocks
trellis
streams are parallel with tributaries forming right angles – alternating bands of hard and soft rock
dendritic
Waterflow resembles branches on a tree – most common pattern
Channel
The path that a stream follows
headword erosion
process of lengthening and branching of a stream
Stream piracy
The capture of a stream in one watershed by a stream with a higher rate of erosion in another watershed
four things that affect the rate of channel erosion
Stream load, velocity, discharge, gradient
Stream load
material carried by a stream
dissolved load
mineral matter transported in liquid solution
suspended load
particles of fine grains and silt suspended in the water
bed load
large, course or sand, gravel, and pebbles that move along the bottom
velocity
distance the water travels in a period of time