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6. What is the most common form of drainage network?
- Dendritic
- Deranged
- Rectangular
- Parallel
- Radial
7. On steeper slopes, what form of drainage network is most common?
- Rectangular
- Trellised
- Parallel
- Deranged
- Dendritic
8. What form of drainage network is formed around a volcano?
- Radial
- Trellised
- Deranged
- Dendritic
- Parallel
9. What is the key control of drainage networks?
- Sediments
- All of the above
- Tectonic/glacial activity
- Geology
- Relief
10. Stream ordering is a method of describing relative sizes of stream channels
11. What hierarchical ordering method of stream channels is most widely/commonly used?
- Horton-Strahler Method
- Shreve Method
12. The Horton-Strahler method works by..
- A and B
- Increasing the order by 1 when two streams of equal orders are confluent
- Two confluent stream orders are added together
- A and C
- If two stream orders are unequal when they meet, the highest order remains
13. Shallow, narrow, forested streams are of...... than bigger, more complex, wider streams
- A lower order
- A higher order
14. There is higher complexity/ habitat diversity/ biodiversity at...
- The confluences
- The mouth
- Estuary
15. Which of these increases downstream?
- A and B
- Substrate (cm)
- Slope (%)
- Width (m)
- Bank erosion (cm/yr)
16. Which are more complex?
- Network profiles
- Traditional long profiles
17. What are the three key factors influencing sediment yield?
- Relief, biodiversity, width of stream
- Geology, wind, sunlight
- Precipitation, geology and relief
- Precipitation, biodiversity, watershed level
- Relief, time of day, precipitation
18. Glaciers are a large contributer of sediment, with a fine sediment flux concentration in the summer period of glacial melt from turbid water
19. What is the main sediment supply to temperate systems?
- All of the above
- Landslides
- Rill erosion (through fields)(30cm)
- Rain splash
- Gully erosion (30cm+)
20. Turbidity is..
- Reduction of transparency of a liquid caused by the presence of undissolved matter
- Typically used as a simple and convenient surrogate for the measurement of suspended solids
- All of the above
- An expression of the optical ability of a medium which causes light to be scattered rather than transmitted in straight lines