Question: What Is Rain Class 9?

Is rain water clean?

Most rain is perfectly safe to drink and may be even cleaner than the public water supply.

Rainwater is only as clean as its container.

Only rain that has fallen directly from the sky should be collected for drinking.

Boiling and filtering rainwater will make it even safer to drink..

Why is it called snow?

The word comes from a word in the Swiss dialect of French, and, prior to that, comes from the Latin word for snow (nix). Our language has used this Latin root to form a large number of words for snow-related things, although most of them are quite obscure.

Can we live without rain?

Rain is important . There is no rain we can’t survive, If there is no rain then the water content may decrease day by day. All the greenery will be disappeared and earth became a desert. and the temperature rate also increase and it cause global warming.

Do we need rain?

Rain is needed as a source of fresh water, which is essential for the survival of humans, plants and animals. Rain fills aquifers, lakes and rivers, maintaining the lives of living organisms. … Rain is essential because it removes the need for transporting water inland and desalination activities.

What is rain explain?

Rain is liquid water in the form of droplets that have condensed from atmospheric water vapor and then become heavy enough to fall under gravity. … The major cause of rain production is moisture moving along three-dimensional zones of temperature and moisture contrasts known as weather fronts.

Where is the rain formed Class 11?

It originates from the land and the deep sea. Then it rises upward to heaven where it changes its form into a cloud, yet remains the same in quality. From the sky it pours down on earth to wash the dry tiny particles and dust layers of the earth. The rain helps the unborn seeds to sprout.

What is the scientific name for rain?

(“Nimbus” comes from the Latin word for “rain.”) Two examples are the nimbostratus or cumulonimbus clouds. Nimbostratus clouds bring continuous precipitation that can last for many hours. These low-level clouds are full of moisture.

What is the study of rain called?

Earth rainfall climatology Is the study of rainfall, a sub-field of meteorology. Formally, a wider study includes water falling as ice crystals, i.e. hail, sleet, snow (parts of the hydrological cycle known as precipitation).

Where does the rain fall class 2?

Answer. The rain falls everywhere. It falls on trees, fields, umbrellas and ships.

How is rain formed Class 5?

Rain is droplets of water that fall from clouds. … This vapour rises, cools, and changes into tiny water droplets, which form clouds. The water droplets in the clouds join together to form bigger drops. When the water droplets get too large and heavy, they fall as rain.

Why is rain so important?

Rainfall is very important for the survival of plants and animals. It brings fresh water to the earth’s surface. If rainfall is less, there is water scarcity which sometime causes drought like situation. If there is excess rain, floods take place which make the life of the affected people miserable.

What causes wind class 9?

Ans: The uneven heating of the earth’s surface is the main cause for the winds. On being heated more the air raises up and hence low pressure is created. Hence, the air in high pressure occupy the low-pressure region causing the wind.

What is first rain called?

PetrichorIt’s called “Petrichor”; a word derived from Greek language, i.e. “Petra” meaning ‘stone’, while “Ichor” is the fluid that flows in the veins of the Gods – per Greek mythology.

What are the advantages and disadvantages of rain?

Rainwater is better than artificial methods of irrigation because it doesn’t have any added chemicals that the latter often have, such as chlorine. There is one caveat, however; when a polluted environment leads to acid rain, which harms human health and the environment, it limits the benefits of rainwater.

Why is it called rain?

Middle English rein, from Old English regn “rain, descent of water in drops through the atmosphere,” from Proto-Germanic *regna- (source also of Old Saxon regan, Old Frisian rein, Middle Dutch reghen, Dutch regen, German regen, Old Norse regn, Gothic rign “rain”), with no certain cognates outside Germanic, unless it is …

Is 1 to 2 inches of rain a lot?

1/2 (0.5) of an inch of rain – A light rain never reaches this amount, moderate rain for 1-2 hours or heavy rain for 30-45 minutes. … One (1.00) inch of rain – A light moderate rain never reaches this amount, heavy rain for several hours (2-5 hours). There would be deep standing water for long periods of time.

How clouds are formed?

Clouds form when the invisible water vapour in the air condenses into visible water droplets or ice crystals. … The amount of water in the air has increased – for example through evaporation – to the point that the air cannot hold any more water.

How are clouds formed and bring us rain?

Clouds are formed when water vapor rises high up into the air. When it reaches cold air, the vapor turns back into droplets of water! … When clouds get so full of water droplets that they can’t hold any more, the water falls back to the ground as rain!

How is rain formed Class 9?

As air rises, it expands and cools. This cooling causes the water vapour in the air to condense in the form of tiny droplets. … The water droplets then grow bigger by further condensation of the already formed droplets. When drops have grown big and heavy, they fall down in the form of rain.

What is rain in science?

Rain is liquid precipitation: water falling from the sky. Raindrops fall to Earth when clouds become saturated, or filled, with water droplets. Millions of water droplets bump into each other as they gather in a cloud. When a small water droplet bumps into a bigger one, it condenses, or combines, with the larger one.