Term
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Definition
| the path water takes in our environment etiher through ground, plants, or atmostphere |
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Term
| hydrologic cycle can occur in ground by... |
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Definition
| evaporation from soil, ground water, runoff |
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Term
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Definition
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| paths water can take from plants: |
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Definition
| transpiration Animals: Respiration + perspiration (evapotranspiration) |
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Term
| path water cantake in the atmosphere:(3) |
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Definition
| evaporation, precipitation, clouds |
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Term
Global water Budjets:
Oceans.. %
Icecaps/glaciers..
ground and soil water..
rivers and lakes..
atmosphere.. |
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Definition
oceans 97.6
icecaps/galciers 1.9
ground and soil water .5
rivers and alkes .02
atmosphere .0001 |
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Term
Run off and stream flows
storage in: |
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Definition
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Term
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Definition
| an underground rock layer that holds water (not an underground lake) |
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Term
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Definition
| precipitations- evapotranspiration +/- change in storage runn off is the movement of water over the surface of the land |
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Term
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Definition
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Term
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Definition
| the amount of runoff that goes into river and streams |
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Term
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Definition
| cross-sectional area of stream X mean velocity of stream. 1mph is about 1.5 foot/sec |
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Term
| river flows at 30mph. depth is 5ft. width is 10 frt. what is the discharge? |
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Definition
5X10=50
velocity= 30X1.5= 45
45X50= 225cfs |
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Term
discharge depends on gradient
the larger the gradient the ____ the discharge |
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Definition
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Term
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Definition
| land area that contriubtes runoff to river system |
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Term
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Definition
| boundary between drainage basins (the higher the elevation) |
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Term
explain the stream network?
stream of 1st order
stream of 2nd order
stream of 3rd order |
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Definition
the system of the main river channel plus its tributaries (heiarchial ranking system)
1st- no tributaries
2nd- merging or joining of two 1st order streams
3rd- merging of two 2nd order streams |
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Term
| when2 streams of same order merge the merged streams will be one order..(higher/lower) |
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Definition
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Term
| when 2 sreams of different order merge the merged stram will be the same order as (higher/lower) stream |
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Definition
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Term
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Definition
| ground water runoff released over large periods of time (the avg. flow of a stream) |
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Term
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Definition
| overland flow (the extra water running off land from a storm) |
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Term
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Definition
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Term
| what influences the shape of hydrography? |
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Definition
a. size of basin
b. type of surface
c. shape of watershed
d. slope
e. intensity and duration of rain
f. urbanization |
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Term
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Definition
| pavement and concrete are impermeable to water so water must flow across surface |
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Term
| urban flood occur faster after the rain and are bigger in magnitude than ruralfloods |
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Definition
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Term
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Definition
landform created by running WATER
-fluvial processes have done more to shape our earth than any other process |
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Term
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Definition
| the wearing away of land and soil through the process of running water (ex. gully and arroyos) |
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Term
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Definition
| the placement of the material carried by running water (ex. deltas) |
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Term
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Definition
| direct force of falling drops on base soil causing a geyserlike splashing in which soil particles are liften and then dropped into new positions |
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Term
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Definition
the removal of soil much faster than it can be formed (overgrazing, forest fires remove vegetation and erosion starts)
ex- badlands (in s. dakota and colorado) |
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Term
| badlands are underlain by ____which do not allow water to seep through therefore the water must go as runoff and it erodes the surface features. |
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Definition
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Term
| what are the 3 mechanisms of stream geology? |
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Definition
stream erosion
stream transporation
stream deposition |
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Term
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Definition
| removal of material from the floor andsides of a channel |
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Term
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Definition
movemeent of the eroded particles
thru...
suspension (material help up by water)
dissolved(mixed with the water (salt))
bed load: sand, gravel and cobbles move by rolling or sliding from water flow
Stream deposition: depositing the material carried by the stream:occurs when there is a major change in stream discharge. |
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Term
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Definition
| bouncing or skipping along stream bed |
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Term
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Definition
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Term
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Definition
| the slow reduction in the height of the headwater of a stream through time as the stream eroded away the surrounding materials there are 4 steps |
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Term
| what are william morris davis's 4 steps of stream gradiation? |
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Definition
1.stream established on land recently uplifted
2. gradiation in grogres (lake draining and deepening gorge
3.graded profile attained. beginning of floodplain. valley widening
4. flood plain widened to hold meanders |
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