Question 11 mark
Which store holds the largest share of the Earth's fresh water?
Water and carbon cycles · AQA, Edexcel, OCR
The water cycle as a system
1 of 6
Question 21 mark
Why is the global water cycle called a closed system?
Question 31 mark
Which is an output from a drainage basin system?
Question 41 mark
What is infiltration?
Question 51 mark
The chart shows a lowland basin's water budget. In which months is there a soil moisture deficit?
| Category | Precipitation (mm) | Potential evapotranspiration (mm) |
|---|---|---|
| Jan | 95 | 10 |
| Feb | 70 | 15 |
| Mar | 65 | 30 |
| Apr | 50 | 50 |
| May | 55 | 75 |
| Jun | 50 | 95 |
| Jul | 55 | 100 |
| Aug | 65 | 85 |
| Sep | 70 | 60 |
| Oct | 95 | 35 |
| Nov | 100 | 15 |
| Dec | 105 | 10 |
Question 61 mark
Using the water budget chart, what is the water surplus in December?
| Category | Precipitation (mm) | Potential evapotranspiration (mm) |
|---|---|---|
| Jan | 95 | 10 |
| Feb | 70 | 15 |
| Mar | 65 | 30 |
| Apr | 50 | 50 |
| May | 55 | 75 |
| Jun | 50 | 95 |
| Jul | 55 | 100 |
| Aug | 65 | 85 |
| Sep | 70 | 60 |
| Oct | 95 | 35 |
| Nov | 100 | 15 |
| Dec | 105 | 10 |