Geography Gcse Rivers Coursework

Geography Gcse Rivers Coursework-81
Flood Hydrograph a graph showing how a river responds to different rainfall levels in the drainage basin.

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In situations where access is more limited you may have to take a more opportunistic approach to sampling – however in this case it is sensible to get as close as possible to a systematic sample as possible.

An alternative approach would be to base your sampling on areas where you might expect significant changes in river discharge – By choosing sampling sites immediately downstream of confluences you may be able to identify the significant changes in discharge and consider the impact of stream order.

Source the starting point of a river Mouth where a river enters the sea or lake Tributaries smaller rivers which flow into a larger river Confluence the point where two rivers meet Drainage Basin the area of land drained by a single river Watershed the imaginary line which surrounds a drainage basin Hydrological Cycle (also called the Water Cycle) the cycle of water between the air, land and sea Channel the feature in which the river flows Hydraulic Action (or Hydraulic Power) a process of coastal and river erosion caused by the force of water wearing away the earths surface Corrasion (or Abrasion) a process of river erosion where a river transport rocks and boulders which knock against the bottom and sides of the river channel, eroding both the channel and the transported material itself. (Think of a scrape or abrasion on your knee) Corrosion the breakdown of rocks by chemical action e.g. V-Shaped Valley a river valley in the upper course with steep and high slopes.

Interlocking Spurs spurs of highland which overlap in the upper course of the valley.

For the collection of your qualitative data it is not necessary (or practical!

) to measure all parts of the river – you will need to take a sample.

For the question “How and why does discharge change downstream at Glenderaterra Beck?

” you will need to measure those variables required for the calculation of Discharge – Width, Depth and Velocity, but also may choose other variables that may help explain reasons for those changes.

These can be used to look at a view of the whole landscape from a given point, or in detail at given features.

You will be expected to use them in your examination answers and coursework. Attrition the process of erosion where the load transported knocks and rubs against each other thus making the load size smaller.

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