Channel Processes Crossword Puzzle

QUESTIONS LIST:

• hydraulic action : air becomes trapped in cracks in the rock and causes the rock to break apart.
• abrasion : pebbles and rocks get picked by the river and grind along the river bed and bank in a sand-papering effect.
• attrition : rocks and pebbles are carried in the flow of a river. the rocks repeatedly knock into eachother, which causes the rocks to erode or break. as the rocks continue o collide, they erode more and more, getting smaller and smaller aswell as rounder until they are only sediment. rocks upstream tend to be bigger and more angular, whereas rocks downstream tend to be smaller and rounder.
• solution/corrosion : a chemical process where certain rock type, like chalk, dissolve in the river’s water.
• saltation : small stones bounced along river bed.
• suspension : very small particles of sand and silt carried in the flow.
• traction : large stones and boulders rolled along the river bed.
• solution : dissolved minerals within water.
• deposition : is where the river drops its material. it occurs when the velocity of the river decreases, energy is reduced and the river can no longer hold its material. factors leading to deposition: shallow water, at the mouth of the river or at the source of the river.
• global sediment yield : the amount of sediment leaving the watershed or catchment.