The process through which a liquid changes into its gaseous state is known as evaporation. The rate of evaporation increases when there is an increase in temperature. Water is evaporated from sea and rivers, and it exists as vapors in the air.

Match the statements in Column A with those in Column B. Column A Column B 1. A mixture of water vapor, dust particles and air on high altitude. (a) Drought 2. Journey of water from ocean to land and back to the ocean (b) Water harvesting 3. Collection of rooftop rainwater. (c) Cloud 4. A situation caused by no rain for a year. (d) Water cycle

A mixture of water vapor, dust particles and air on high altitude is known as cloud. The drops of water fall from the clouds towards the ground is called rain. The journey of water from ocean to land and back to the ocean is known as water cycle. It is powered by the heat of the sun and the force of gravity. The collection of rooftop rainwater for future use is known as water harvesting. It is a method of conservation of water. A situation caused by no rain for a year is known as drought. It results in loss of human life as well as of animal and plant life. The correct matches can be given as, Column A Column B 1.A mixture of water vapor, dust particles and air on high altitude. (c) Cloud 2.Journey of water from ocean to land and back to the ocean (d) Water cycle 3. Collection of rooftop rainwater. (b) Water harvesting 4.A situation caused by no rain for a year. (a) Drought

Evaporation is the process of conversion of water into its vapours by absorbing heat. Drying clothes under the sun is an example of this.

EASY

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What is evaporation?

Important Questions on Water

EASY

Column A	Column B
1. A mixture of water vapor, dust particles and air on high altitude.	(a) Drought
2. Journey of water from ocean to land and back to the ocean	(b) Water harvesting
3. Collection of rooftop rainwater.	(c) Cloud
4. A situation caused by no rain for a year.	(d) Water cycle

Evaporation	Condensation

What is evaporation?

Important Questions on Water

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