geography
0.0 / 5
- Created by: fliss
- Created on: 05-04-16 20:17
elements of a drainage basin
infiltration, stem flow, evaporation, precepitation, interception, through flow, perculation, ground water flow
1 of 34
Evaportation
phsycial process by which liquid becomes a gas, function of wind temp and rock surface evapotranspiration= rate water transfers from earth to atmosphere
2 of 34
water balance-global
amount of water stored in various locations
3 of 34
water balance- drainage basin
relationship between evap and precip when evap is higher then soil moisture is utilized
4 of 34
hydrological cycle
transfer of water between sea and land
5 of 34
river regimes
season variation in volume, is the presence of snow fields or glaceiers, they depend on amount and nature of rain, vegeation and rock cover
6 of 34
wetted permiter
surface of bed and bank which is in contact with the water in the channel
7 of 34
hydralic radius
area divided by wetted permitter shows friction between the water and the channel
8 of 34
discharge
volume of water passing a given point of a set period og time, measured in cumex metres per sec
9 of 34
factors affecting discharfe
previous weather, relief, rock type, temperature, land use, amount and type of rain
10 of 34
flood prediction
using past storm hydrographs or records, rainfall graphs, flood recurance intervals and periods
11 of 34
hard engineering
man made structures which control flow of river e.g. dam
12 of 34
soft engineering
schemes to reduce effecrs e.g. prep
13 of 34
attrition
material moved along the river collides with others and breaks up
14 of 34
corrasion
fine material rub against the bank
15 of 34
corrosion
rocks disolve
16 of 34
hydralic action
force of the water hitting the bed
17 of 34
traction
large boulders rolled along
18 of 34
saltation
smaller stones bounced along
19 of 34
suspension
fine materal carried along
20 of 34
solution
disolved materal transported
21 of 34
factors effecting erosion
gradient, geology, ph, human activity, load and velocity
22 of 34
features of erosion
oxbow lake= neck becomes closer then river breaks through, deposition cuts of meander
23 of 34
features of deposition
levees and waterfalls
24 of 34
Aquifer
rocks which contain water
25 of 34
aquiclude
ricks which dont hold water or allow movement
26 of 34
Artisian basin
confined aquifer which contains ground water under postive pressure
27 of 34
if ground water is over used
rising water table, subsidence, well becomes not artisian
28 of 34
irrigation
artifical addition of water to soil
29 of 34
salinisation
as water passes over soil it dissolves material increasing salts which come to surface via capilarry action and dry on the surface
30 of 34
eutrophication
increased amount of nitrogen carried into lakes causing nutrient enrichment, leads to agal blooms, oxygen starvation
31 of 34
wetland
areas which are regually satuirated and water logged, transision zone between land and sea
32 of 34
benefits
recharge, purification, tourism, transport route
33 of 34
threat
population, motor boats, waterpolluted by oil, increase in nitrates, and infrastructure
34 of 34
Other cards in this set
Card 2
Front
Evaportation
Back
phsycial process by which liquid becomes a gas, function of wind temp and rock surface evapotranspiration= rate water transfers from earth to atmosphere
Card 3
Front
water balance-global
Back
Card 4
Front
water balance- drainage basin
Back
Card 5
Front
hydrological cycle
Back
Related discussions on The Student Room
- a bird that lives by water and has webbed feet »
- GCSE Narrative Writing English Language »
- geography paper 2 energy food water »
- People who study geography, what are your plans? »
- insecure body image »
- What is A-level geography like? »
- Why is this my best subject?? (Revision advice needed) »
- Plymouth univ vs Brighton »
- eating way too much during exam season !! »
- A-level Geography Study Group 2022-2023 »
Similar Early Education and Childcare resources:
0.0 / 5
0.0 / 5
0.0 / 5
0.0 / 5
0.0 / 5
0.0 / 5
0.0 / 5
0.0 / 5
0.0 / 5
0.0 / 5
Comments
No comments have yet been made