River hydrographs 1st Year

What is meant by the term precipitation?

• rain, sleet, hail and snow

• water caught by leaves of trees

• water sinking into the ground

• rocks that allow water to sink in

What is the imaginary line surrounding a river basin called?

• watershed

• border

• sky

• sea

What is the area of land surrounding a river called, from where it collects rain?

• drainage basin

• stream

• hills

• fields

Discharge is the volume of water flowing down a river in cumecs which means...

• cubic metres per second

• column of water passing a point

• stream depth in metres

• speed of the river in centimetres per second

What is Label 1 showing on this hydrograph?

• the peak discharge (maximum flow)

• the base discharge (normal river flow)

• peak rainfall

The highest river level reached after heavy rain is called...

• peak discharge

• normal flow

• drought

• peak rainfall

On this hydrograph what is the arrow pointing to?

• stream flow

• rainfall amount

• depth of river

On a hydrograph what is shown by the blue line labelled at 1?

• river discharge (flow)

• rainfall

• amount of sunshine

Line 1 on a hydrograph shows a...

• rising river discharge

• falling river discharge

• peak discharge

• steady discharge

Line 2 on a hydrograph shows a...

• rising river discharge

• falling river discharge

• peak discharge

• steady discharge