Q) Explain the process of water cycle mentioning about " Evaporation, Precipitation, Condensation and Transpiration. Q) Explain how ground water gets recharged focusing on the following key terms: Water table, Infiltration and Aquifer. Q) Why do you think we are witnessing decline in the ground water levels across the country? Q) Explain how gravitational pull of sun and moon leads to increase and decrease in the sea levels? Q) How are Tidal waves different from Tid

The water cycle, also known as the hydrologic cycle, is the process by which water moves from place to place above, on, and below the Earth's surface. This is the process by which water moves around the Earth to different places. The total amount of water on the Earth is relatively unchanging, and it has remained about the same since our planet's formation. As the planet cooled, water vapor present at its formation condensed to fill the oceans and other places, like inland lakes and rivers.

evaporation

Evaporation is a purifying process. One of the ways you can purify sea water is to heat it so it evaporates and then collect the steam. The steam is pure water, and getting it back to a liquid requires our next phase of the water cycle.

Condensation

Condensation is the process by which water vapor is changed back into liquid water. Condensation is very important to our weather and climate because it is what is responsible for cloud formation.

Without clouds, we would not get to the third phase, called precipitation, which we will talk about in a minute. Clouds form when water vapor condenses around small particles, like bits of dust or smoke in the air. Depending on the size of the drops, these particles may or may not be visible. Even on a clear, cloudless day, water vapor is always present in the atmosphere, but it does vary in amounts. We know it is present on a very humid day; it often feels like we need to swim through the air! Fog is condensation near the ground.