The water balance Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

What is the water balance equation?

A

P = O + E +/- S

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the soil water budget graph?

A

They show the water balance of a particular location. They also show the relationship between temperature, precipitation and evaporation rates over the year.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Define dynamic equilibrium

A

The system is in a state of balance.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How is runoff measured?

A

It is written as a percentage of precipitation.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Why might runoff vary?

A

Heavily forested river basins
Permeable rocks
Intensity of rainfall

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What does positive water balance mean?

A

Precipitation exceeds evapotranspiration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What does negative water balance?

A

Evapotranspiration exceeds evapotranspiration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is surplus?

A

When all space in the soil has been filled

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What happens during the early months of the year?

A

Soil moisture recharge (replenished)- precipitation is greater than evapotranspiration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What happens during the early summer months of the year?

A

Soil moisture utilisation - evapotranspiration exceeds precipitation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What happens towards the end of the summer months?

A

The soil moisture has all been utilised and it goes into a potential soil moisture deficit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How is discharge measured?

A

Cross-sectional area x velocity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is discharge?

A

The volume of water passing a measuring point in a given time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is a river regime?

A

Used to measure the variability in discharge over a given year

How well did you know this?
1
Not at all
2
3
4
5
Perfectly