Geomorphology

Question 1

8 factors influencing water filtration:

Answer 1

1. Level of water saturation in soil low=high filtration
2. Area evaporation rate
3. Slopes gradient
4. Amount of rain and ground is hard/soft
5. Density and type of plant cover
6. Rock permeability
7. Soil type
8. Land use

Question 2

4 types of rivers:

Answer 2

1. Permanent/perennial
2. Periodic/non-perennial
3. Episodic
4. Exotic rivers

Question 3

7 drainage patterns:

Answer 3

1. Dendrite
2. Trellis
3. Radial
4. rectangular
5. Deranged
6. centripetal
7. Parallel

Question 4

Drainage density definition:

Answer 4

Total amount of length of streams per unit area of drainage basin

Question 5

7 Factors influencing drainage density:

Answer 5

1. Evaporation rates (high=low dd)
2. Amount of rainfall (more=high dd)
3. Infiltration rates (high=lower dd)
4. Vegetation cover
5. Slope/gradient
6. Soil moisture
7. Rock hardness and type

Question 6

What texture is resulted by low,medium,high and super high dd:

Answer 6

Low=coarse texture
Medium=medium texture
High=fine texture
Super high=super fine

Question 7

What is river discharge:

Answer 7

The amount of water flowing past a certain point at any given time in a river

Question 8

Laminar v turbulent flow:

Answer 8

Laminate= water flowing in layers
No level change
Even river bed
Less erosion
High flow speed
Turbulent = opposite

Question 9

The 4 erosion forces:

Answer 9

1. Attrition
2. Abrasian
3. Hydronic action
4. Suspension

Question 10

5 important reasons why managing drainage basins are important:

Answer 10

1. Store and protect water
2. Wet land preservation
3. Flood control
4. Agriculture
5. Preserves biodiversity