Heat Transfer in Nature — Science STD 7 — Question

The water cycle is the process of continuous movement of water on Earth. It plays a very important role in supporting life by recycling and distributing water across the planet. The water keeps changing its form liquid, vapour, and sometimes solid and moves through different parts of the environment. The main processes involved in the water cycle are:
1. Evaporation: It is the process where water changes into vapour and rises into the atmosphere due to heat. This usually happens from oceans, rivers, lakes and other water bodies when the Sun shines on them.
2. Transpiration: It is the process where water is absorbed by plants from the soil and then released as water vapour through their leaves into the atmosphere. Together with evaporation, it adds moisture to the air.
3. Condensation: It is the process where water vapour cools down and changes back into liquid water, forming clouds in the sky.
4. Precipitation: It is the process when the water falls from the clouds to the Earth’s surface as rain, snow, or hail.
5. Infiltration: After precipitation, some water seeps into the ground and gets stored as groundwater. This process is called infiltration.