The Main Hydrological Characteristics And Processes Which Operate In Rivers And Drainage
Muhtasari
Every drop of rain that falls on a hillside has somewhere to go. Some soaks into the soil, some trickles slowly underground, and some races over the surface into a stream. Trace these journeys and you have the story of a drainage basin: a single river system fed by every slope that drains towards it. Understand the basin and you understand why rivers flood, why they carve valleys, and why the water you drink is never far from the sky it fell from.
This lesson builds the vocabulary and the mechanics you need for the whole rivers theme. You will learn the parts of a river and its basin, how discharge, velocity and the channel are linked, how water moves through the basin as part of the water cycle, and exactly how a river erodes, transports and deposits its load.
Malengo
- Characteristics of rivers and drainage basins: the long profile, width, depth, speed of flow/velocity, discharge, wetted perimeter, channel, watershed, tributary, confluence, source, mouth.
- The Bradshaw model.
- How the drainage basin operates within the water cycle.
- Processes which operate in a drainage basin: precipitation, interception, infiltration, percolation, overland flow, channel flow, throughflow, groundwater flow, transpiration, evaporation, evapotranspiration.
- Processes which operate within a river: • erosion; hydraulic action, abrasion, attrition, solution • transportation; traction, suspension, saltation, solution • deposition.
Maelezo ya Somo
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Utakutana na mchanganyiko wa aina mbalimbali za maswali, ikiwemo maswali ya kuchagua jibu sahihi, maswali ya majibu mafupi, na maswali ya insha. Kila swali limebuniwa kwa umakini ili kupima vipengele tofauti vya maarifa yako na ujuzi wa kufikiri kwa makini.
Tumia sehemu hii ya tathmini kama fursa ya kuimarisha uelewa wako wa mada na kubaini maeneo yoyote ambapo unaweza kuhitaji kusoma zaidi. Usikatishwe tamaa na changamoto zozote utakazokutana nazo; badala yake, zitazame kama fursa za kukua na kuboresha.
- The high ground separating two drainage basins is called the: A. confluence B. watershed C. source D. mouth Answer: B
- Discharge is measured in: A. metres per second B. cubic metres per second (cumecs) C. square metres D. kilograms Answer: B
- Which process moves the heaviest material by rolling it along the bed? A. suspension B. solution C. traction D. saltation Answer: C
- According to the Bradshaw model, which variable DECREASES downstream? A. discharge B. channel depth C. load particle size D. channel width Answer: C
- The wearing away of the bed by the load scraping against it is: A. hydraulic action B. abrasion C. attrition D. solution Answer: B
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Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
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Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
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