section 08 (quiz & script sheets & exercise videos)

Question 1

List the partial steps of sub-basin creation.

L8-1

Answer 1

1. Digital Terrain Model
2. Flow Direction
3. Flow Accumulation
4. water network
5. Sub-basins

Question 2

Is the following statement correct?

“For the calculation of a basin you use the initial DEM for all calculation steps.

(L8-2)

Answer 2

WRONG

Question 3

List 3 tools that are part of hydrology modelling.

L8-3

Answer 3

Watershed
Fill
Flow Accumulation

Question 4

Is the following statement correct?

“We have to fill sinks, because we do not want to consider lakes or ponds in our calculations.”

(L8-4)

Answer 4

WRONG

Question 5

Is the following statement correct?

“According to the method of Strahler, the stream order only increases when two streams of the same order intersect.”

(L8-5)

Answer 5

TRUE

Question 6

Is the following statement correct?

“If a stream of order 4 and a stream of order 2 intersect,
which stream order does the resulting stream have
according to Shreve?

(L8-6)

Answer 6

6

Question 7

The Rhine Basin consists of how many major subbasins?

L8-7

Answer 7

10

NOT nine

Question 8

How many possible directions do exist when calculating the flow direction of water in a grid?

(L8-8)

Answer 8

8

When calculating the flow direction of water in a grid, there are eight possible directions.

Question 9

What is the Pour Point?

L8-9

Answer 9

the Pour Point:

the point on the surface where water flows out of the area

Question 10

Is the following statement correct?

“Pour points can easily be calculated with the “pour point” tool.”

(L8-10)

Answer 10

WRONG