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21/12/2021

What is the role of atmosphere Class 9?

What is the role of atmosphere Class 9?

The atmosphere is a protective layer that safeguards the earth from the harsh conditions of the solar system. During the day, it prevents a sudden increase in the temperature of the earth and prevents the heat to escape to the outer space during the night. It keeps the average temperature of the earth steady.

What are the types of atmosphere?

The different layers of the atmosphere. The atmosphere can be divided into layers based on its temperature, as shown in the figure below. These layers are the troposphere, the stratosphere, the mesosphere and the thermosphere. A further region, beginning about 500 km above the Earth’s surface, is called the exosphere.

What is called impalpable in the poem?

Impalpable means unable to touch or feel. The water which rises from the land and the oceans cannot be touched and also cannot be easily comprehended as its state keeps on changing but the content remains the same. Hence, the rain calls itself impalpable.

What are the uses of atmosphere?

The Earth’s atmosphere protects and sustains the planet’s inhabitants by providing warmth and absorbing harmful solar rays. In addition to containing the oxygen and carbon dioxide, which living things need to survive, the atmosphere traps the sun’s energy and wards off many of the dangers of space.

Why should we protect atmosphere?

A stable atmosphere is essential for maintaining human, animal and plant health. The Earth’s protective ozone layer is being depleted by chlorofluorocarbons (CFCs) and other ozone-destroying chemicals.

Do you like to play in water 2nd class?

Yes, I like to play in water. I also play music while playing in water. Many things live in water like frogs, crocodiles, fish, whales, tortoises, etc.

What is the composition of the atmosphere Class 7?

The majority of the atmosphere is made up of nitrogen (78%) and oxygen (21%). The other gases that are present in small quantities are: Carbon dioxide (0.03%), Argon (0.93%) and Others ( helium, hydrogen, ozone). Tiny dust particles are also present in the air, apart from the above gases.

What is the importance of atmosphere for Class 6?

The atmosphere protects the Earth from the solar radiation. It filters the harmful ultraviolet rays of the Sun. The atmosphere traps the required heat of the Sun and allows the rest to escape into space, thus maintaining a moderate temperature on the Earth. This ensures the existence of various life forms.

How rains are formed?

Within a cloud, water droplets condense onto one another, causing the droplets to grow. When these water droplets get too heavy to stay suspended in the cloud, they fall to Earth as rain. Water vapor turns into clouds when it cools and condenses—that is, turns back into liquid water or ice.

How is freezing rain formed?

Freezing rain develops as falling snow encounters a layer of warm air deep enough for the snow to completely melt and become rain. When the supercooled drops strike the frozen ground (power lines, or tree branches), they instantly freeze, forming a thin film of ice, hence freezing rain.

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.

Why is the composition of the atmosphere important?

The atmosphere is made of gases that are essential for photosynthesis and respiration, among other life activities. The atmosphere is a crucial part of the water cycle. The atmosphere moderates Earth’s temperature because greenhouse gases absorb heat.

How is rain caused Class 9?

Rain is formed by evaporation and condensation of water through water cycle. Acid rain is caused by the release of the gases like SO2 (sulphur dioxide) and NO2 (nitrogen dioxide) released from the emission of vehicles and combustion of fuels. These gases dissolve in rain water to form nitric acid and sulphuric acid.

What are the composition and the structure of the atmosphere?

The atmosphere has 4 layers: the troposphere that we live in near the surface of the earth; the stratosphere that houses the ozone layer; the mesosphere, a colder and lower density layer with about 0.1% of the atmosphere; and the thermosphere, the top layer, where the air is hot but very thin.

What is the composition of atmosphere?

The atmosphere is composed of a mix of several different gases in differing amounts. The permanent gases whose percentages do not change from day to day are nitrogen, oxygen and argon. Nitrogen accounts for 78% of the atmosphere, oxygen 21% and argon 0.9%.

What causes rain Class 9?

Rain is produced by two natural processes, i.e., evaporation and condensation. The water from water bodies evaporates into the air and gets condensed in the form of tiny droplets. Enormous droplets of water appear in the form of clouds. When the droplets become big and heavy, they fall down in the form of rain.

What is the importance of atmosphere Class 9?

It acts as a protective blanket for organisms existing on earth. As air in the atmosphere is bad conductor of heat, it helps to maintain the erth’s temperature by preventing the sudden increase in temperature during day and also during the night, it slows down the escape of heat into the outer space.

What is the importance of atmosphere Class 7?

The atmosphere blocks harmful ultra-violet radiations to reach Earth. The atmosphere contains oxygen, the gas living beings need to breathe to stay alive. The moisture it contains is an essential part of the water cycle. Green plants need the carbon dioxide present in the atmosphere for making food.

What are the main features of atmosphere?

Earth’s atmosphere is composed of about 78% nitrogen, 21% oxygen, and one percent other gases. These gases are found in layers (troposphere, stratosphere, mesosphere, thermosphere, and exosphere) defined by unique features such as temperature and pressure.