The global water cycle

Question 1

Where is the majority of Earths water stored and give a %?

Answer 1

(Saline water) oceans (97.4%)

Question 2

What % of water is stored in freshwater (snow and ice and groundwater)?

Answer 2

2.5%

Question 3

Define an aquifer

Answer 3

underground reservoirs when freshwater is stored in rocks deep below the ground surface

Question 4

What % of freshwater is stored in aquifers?

Answer 4

30%

Question 5

What type of rocks is needed for aquifers to form?

Answer 5

commonly form in rocks such as chalk and sandstone as they need to be porous and permeable to allow water to pass through

Question 6

What is the soil water budget?

Answer 6

The soils capacity to store and transfer water

Question 7

What is the name for the upper level of saturated rock?

Answer 7

the water table

Question 8

What is the name for aquifers in the deserts of Africa, the Middle East and Australia?

Answer 8

fossil aquifers

Question 9

How did fossil aquifers form?

Answer 9

they were formed thousands of years ago when the climate in those regions were much wetter