Rivers - Storm Hydrograph

Question 1

What does the hydrograph show?

Answer 1

Relationship between precipitation and the level of a river.

Question 2

Lag Time

Answer 2

Difference between the time of the heaviest rainfall and the maximum level of the discharge of the river.

Question 3

Throughflow

Answer 3

The water that moves downslope through the sub soil.

Question 4

Throughfall

Answer 4

The water that drips off leaves during a rainstorm.

Question 5

Interception

Answer 5

Process by which raindrops are prevented from directly reaching the soil surface.

Question 6

Run Off

Answer 6

All the water that enters a river and eventually flows out the drainage basin.

Question 7

Evaporation

Answer 7

Process by which liquid water is transformed into water vapour.

Question 8

Evapotranspiration

Answer 8

Total amount of moisture removed by evaporation and transpiration from a vegetated land surface.

Question 9

Precipitation

Answer 9

Water in any form that falls from the atmosphere.

Question 10

Infiltration

Answer 10

The passage of water into the soil.

Question 11

Groundwater

Answer 11

Slowest transfer of water through bands of sedimentary rock.

Question 12

Stemflow

Answer 12

The water that runs down the stems and branches of plants and trees during and after a rainfall.

Question 13

Percolation

Answer 13

Downward movement of water within the rock under the soil surface.