Water Cycle

Water cycle is essential for the maintenance of life and ecosystem on Earth.

Water cycle describes the continuous movement of water on, above and below the surface of the Earth.

The processes involved in the water cycle are evaporation, transpiration, condensation, precipitation, and runoff.

During these processes water changes into different forms like liquid, solid (ice) and vapour.

Here we can see the cyclic movement of water.

Let’s understand about the different processes involved in water cycle.

Let’s discuss about evaporation .

In Evaporation transfer of water from the surface of the Earth to the atmosphere takes place.

During evaporation, water in the liquid state is transferred to the gaseous state.

Let’s discuss about condensation .

The transition process from the vapour state to the liquid state is called condensation.

Condensation of water vapour in atmosphere occurs when the air cools down .

By condensation, water vapour in the atmosphere is released to form precipitation.

Let’s discuss about precipitation .

During precipitation condensed water vapor falls on the Earth's surface.

Most precipitation occurs as rain, but also includes snow , hail, fog, etc .

Let’s understand about Runoff .

The water can travels through land by various ways .

This includes both surface runoff and groundwater runoff .

In surface runoff , water flows directly into the sea via channels like rivers , streams etc .

In groundwater runoff, water passes deep into the soil .

Let’s understand how the mass of water on Earth remains constant .

So , we can say that approximately all the water that is evaporated returns to its source according to water cycle.

Therefore, the mass of water on Earth remains fairly constant over time.

Revision

The water cycle describes the continuous movement of water on, above and below the surface of the Earth.

The processes involved in the water cycle are evaporation, transpiration, condensation, precipitation, and runoff.

The water cycle can be described as above

Evaporation is the transfer of water from the surface of the Earth to the atmosphere.

Transpiration is the evaporation of water through minute pores, or stomata, in the leaves of plants.

The transition process from the vapour state to the liquid state is called condensation.

During precipitation condensed water vapour falls on the Earth's surface.

The End