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Fill up the blanks in the following:
(a) The process of changing water into its vapour is called_______________ .
(b) The process of changing water vapour into water is called_____________ .
(c) No rainfall for a year or more may lead to _____________ in that region.
(d) Excessive rain may cause__________ .
(a) The process of changing of water into its vapour is called evaporation.
(b) The process of changing water vapour into water is called condensation.
(c) No rainfall for a year or more may lead to drought in that region.
(d) Excessive rain may cause floods.
[Extra information:
The process by which a liquid changes into vapor form, below its boiling point, is known as evaporation.
The various factors that affect evaporation are:
1. Temperature: The rate of evaporation increases with the increasing temperature. The rate of evaporation and temperature are proportional to each other.
2. Surface area: The rate of evaporation increases with the increased surface area. The rate of evaporation and surface area are proportional to each other.
3. Humidity: The rate of evaporation decreases with an increase in humidity. The rate of evaporation and humidity are inversely proportional to each other.
4. Wind speed: The rate of evaporation increases with wind speed. The rate of evaporation and wind speed are proportional to each other.
Condensation: The process in which a gas changes into a liquid on cooling is known as condensation.
A drought is an event of prolonged shortages in the water supply or lack of insufficiency of rain for an extended period of time.]
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