Ppt rashi

WATER CYCLE

039|B.Ed|V.D.I.T|2016-2018

Most precipitation falls back into the oceans or onto land, where , due to gravity, the precipitation flows over the ground as surface runoff. A portion of runoff enters rivers in valleys in the landscape , with stream flow moving water towards the oceans.

WATER CYCLEMeaning-

The water cycle , also known as the hydrological cycle , describes the continuous movement of water on and above and below the surface of the earth.

The water moves from one reservoir to another, such as from river to ocean, or from the ocean to the atmosphere, by the physical process of the evaporation, condensation, precipitation, infiltration. In doing so, the water goes through different phases: liquid, solid(ice) and vapor.

The water cycle involves the exchange of energy, which leads to temperature changes.

For instance, when the water evaporates, it takes up energy from its surroundings and cools the environment.

When it condenses it releases energy and warms the environment.

These heat exchanges influence climate.

The water cycle is essential for the maintenance of most life and ecosystem on the planet.

“Evaporation”- The process of turning from liquid into vapor is called evaporation.

“CONDENSATION”- The process of conversion of vapor or gas to a liquid is known as condensation.

“PRECIPITATION”- Precipitation is water released from the cloud in the form of rain.

“INFILTRATION”- Infiltration is the process by water on the ground surface enters the soil.

ROLL NO.-03917402116RASHI SHARMA