Moisture

Somedays we see that clothes take a longer time to dry, and sweat from our body does not go off easily.

This is because of the presence of heavy moisture in the air.

Moisture is also present in Jet engines. It comes out after getting cooled and forms a white trail behind the Jet planes.

Moisture is the water present in the air in the form of gas. It is also called water vapour.

When water from any water body evaporates due to the heat of the sun, it becomes water vapour.

As the air gets warmer, its capacity to hold water vapour increases, so it becomes more humid.

When the air is full of water vapour, we call that day a humid day.

The water vapour in the air helps in the formation of rainfall.

Let us discuss the formation of rainfall.

When water vapour rises, it starts cooling and then condenses, causing the formation of droplets of water.

Condensation is the process of changing a gas into the form of liquid.

Clouds are just masses of such water droplets.

When these droplets of water become too heavy to float in the air, they come down as precipitation or rainfall.

When the rainfall is less, it causes drought. And when the rainfall is more, it causes floods.

Rainfall is very important for the survival of living beings. It brings freshwater to the earth's surface.

Most of the groundwater comes from this rainwater.

Plants help us preserve this rainwater.

But when we cut trees, especially on mountains, rainwater flows downhill and causes floods in low lying areas.

Revision

Moisture is the water present in the air in the form of gas. It is also called water vapour.

When the air is full of water vapour, we call that day a humid day.

When water vapour rises, it starts cooling and then condenses causing the formation of droplets of water.

Rainfall occurs when these water droplets become too heavy to float in the air and come down.

Less rainfall causes drought and excessive rainfall causes a flood.

Rainwater brings freshwater to the earth. Plants help us to preserve this water.

The End