The global hydrological cycle describes the continuous movement of water on, above, and below the Earth's surface. It is powered by solar energy and is a closed system that circulates water in a continual loop. While 70% of the Earth's surface is covered in water, 97.5% of it is salt water found in oceans. Fresh water makes up only 2.5% of the planet's water, with 1% located on the Earth's surface in lakes, rivers, and 20% in groundwater and 79% in ice caps and glaciers. The hydrological cycle involves processes like evaporation, condensation, transportation, precipitation, groundwater, transpiration, and runoff that move and distribute water around the

1. Global Hydrological cycle
Presented by
Manzar Abbas Khan
Department of
Soil science

2. What is Global hydrological cycle?
 The continuous movement of water on, above and below the
surface of the Earth.
 The global hydrological cycle is powered by solar energy. It is
a closed system, in continual circulation.
 There is a definite amount of water in the system and this
amount does not change.

3. Water distribution
 70% of the Earth’s surface is covered with water.
 BUT 97.5% of this water is salt water (ocean).
 Only 2.5% of the planet’s water is fresh water,and only 1% of
that exists on Earth’s surface
 It includes,1%=lakes, rivers ,20%=groundwater 79%=ice
caps and glaciers

4. Water distribution

5. Proceses involve in hydrological Cycle
 Evaporation
 Condensation
 Transport
 Precipitation
 Groundwater
 Transpiration
 Runoff

6. Hydrological cycle

7. Proceses involve in hydrological Cycle
 Evaporation
The transformation of water from a liquid into a gas, a process which humidifies the atmosphere.
 Condensation
The transformation of water from a gas into a liquid, and the processes that lead to condensation.
 Transport
The movement of water through the atmosphere.
 Precipitation
The transfer of water from the atmosphere to land. Rain, snow, hail, sleet, and freezing rain are discussed.
 Groundwater
Water located below ground and how it returns to the surface.
 Transpiration
Transfer of water to the atmosphere by plants and vegetation.
 Runoff
Rivers, lakes, and streams transport water from land to the oceans. Too much rainfall can cause excess
runoff, or flooding.

8. Thanks