Water: Properties and Importance

When water freezes, its size (volume) increases. This is one of the reasons for the bursting of water pipeline in winter because when water freezes, it converts into ice and increases in size. Water is one of the few substances that expand on cooling.

Water is colourless, tasteless and also takes the shape of any container as it is liquid. No life is possible on the earth without water.

Rain gauge is an instrument, which measures the amount of rainfall. When rain falls, many times it is absorbed into the earth, making it hard to figure out how much rain fell. Weather forecasters use rain gauges to provide accurate information about rainfall.

Water boils when it reaches its boiling point of 100ºC. This is the temperature at which water turns to steam or water vapour. Steam is an invisible gas. At this temperature, water evaporates very fast.

We cannot survive without water because water is very important component of our life. Living things need water to grow and survive. They cannot survive without water for very long. All kind of processes, like growth, metabolism of food depend on water.

We cannot survive without water because water is very important component of our life.Living things need water to grow and survive. They can not survive without water for very long. Water is essential for all living things.All kind of processes like growing, food,metabolism of food depends on the water.

This is correct option. Ice and snow are solid forms of water, water is liquid and steam is solid.

Ice is the solid form of water, it is obtained when water freezes up to its freezing point. It is cool, and we usually put it in drinks in summers. It disappears when it melts and gets converted into water.

This is right option because when we heat water it reaches to its boiling point and starts boiling and making bubbles.

When rain is poured from the sky, it gives everybody relief from the heat, so everybody rejoices. It also helps plants and trees to grow. Ponds, rivers and seas, which get dried because of transpiration of water get a refill due to rain.

Plants need water. If there is no water, all plants will die as water helps them to grow, to prepare food etc.

Dew is the tiny droplets of water found on the surface of leaves and flowers. Dew is formed when air contains water in the form of water vapor. In the evenings, when warm, moist air passes over cool surfaces, the air cools down.

Water pollution is very harmful. It is affecting our life in many ways. So, we should not make the ponds, rivers and seas dirty by throwing wastes in it.

This statement is correct. We should filter or boil water before drinking as it contains lots of bacteria, viruses and dust particles that are harmful for our body.

This is a right option, here all are correctly matched. The tiny drops of water are the clouds, evaporation is the water rising to the sky, 0 degree Celsius is the freezing point of water and 100 degree celsius is the boiling point of water.