Page 2 - 1.Mindmap-Water

NOTES:

WATER CYCLE:

• The repeated change of water to water vapour and then back to water,
which is occurring continuously in nature, is called water cycle.
• The processes involved in this cycle are evaporation, condensation and

precipitation.

EVAPORATION:

The process by which water changes into water vapour on heating is known as

evaporation.

Factors for evaporation:

• The rate of evaporation is faster in areas with high temperature.
• Evaporation is faster in areas that are less humid.

• Strong wind increases evaporation.
• If the exposed surface area is more, then the rate of evaporation also

increases.

CONDENSATION: It is the process by which water vapour changes to water on
cooling.

If the atmospheric temperature is low or below freezing point, then water

vapour freezes to form snowflakes.

PRECIPITATION: When clouds pass through cooler air, they become heavy.
Eventually, they become so heavy that they fall on land as rain
drops.aibecomeheavy, and they fall on land.