Tag: atmosphere and its structures

Questions Related to atmosphere and its structures

The part of atmosphere which is consists of variable gasses with unknown composition is called ____________.

geography what is around us? atmosphere and its structures the atmosphere components of earth elements of weather and climate : temperature the earth's structure

  1. Stratosphere

  2. Hetrosphere

  3. Homosphere

  4. None of these

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Correct Option: B
Explanation:

The part of the atmosphere which is consists of variable gasses with unknown composition is called Hetrospere.
The heterosphere is the upper portion of the Earth's atmosphere, in which gases are fractionated according to their molecular weight. It lies above the homosphere, where chemical constituents are well mixed.

The narrow band of land, water and air where all kinds of life is possible is known as ___________.

evs - i what is around us? atmosphere and its structures the atmosphere components of earth elements of weather and climate : temperature the earth's structure

  1. Atmosphere

  2. Biosphere

  3. Lithosphere

  4. Hydrosphere

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Correct Option: B
Explanation:

The biosphere is the narrow band of land, water and air where all kinds of life on earth live. This layer ranges from heights of up to ten kilometers above sea level. It is the fourth component of the earth. Biosphere is a life-supporting global ecosystem, where each living things depends on each other and the environment. The biosphere extends over the Earth's surface in a thin layer from a few kilometres into the atmosphere, in very cold environments, to the deep-sea vents of the ocean depths and in very hot and cold environments as well.

Percentage of oxygen in the earth's atmosphere is __________.

geography what is around us? atmosphere and its structures the atmosphere components of earth elements of weather and climate : temperature the earth's structure

  1. 21%

  2. 78%

  3. 20.94%

  4. 10%

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Correct Option: A
Explanation:

According to NASA, the gases in Earth's atmosphere include: Nitrogen — 78 percent. Oxygen — 21 percent. Argon — 0.93 percent.

Our country India is one of the twelve __________ countries of the world.

geography what is around us? atmosphere and its structures the atmosphere components of earth elements of weather and climate : temperature the earth's structure

  1. Densely populated

  2. Economically developed

  3. Mega bio-diversity

  4. None of the above

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Correct Option: C

How many biosphere reverses have been set up in the country to protect flora and fauna?

geography what is around us? atmosphere and its structures the atmosphere components of earth elements of weather and climate : temperature the earth's structure

  1. Fifteen

  2. Sixteen

  3. Seventeen

  4. Fourteen

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Correct Option: D

The most abundant constituent of dry air in terms of volume is ________.

    geography what is around us? atmosphere and its structures the atmosphere components of earth elements of weather and climate : temperature the earth's structure

    1. carbon dioxide

    2. nitrogen

    3. oxygen

    4. none of these

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    Correct Option: B
    Explanation:

    Nitrogen is important gas of which about 78% of the atmosphere's volume is made up. Nitrogen serves mainly as a diluent. It is relatively inactive chemically, though many f its compounds are very active. Its main function in the atmosphere is to regulate combustion by diluting oxygen. It also indirectly helps in oxidation of different kinds.

    Gases which increase the temperature of the atmosphere such as carbon dioxide, methane, chlorofluorocarbon, etc are known as ___ gases.

    evs - i what is around us? atmosphere and its structures the atmosphere components of earth elements of weather and climate : temperature the earth's structure

    1. Green house

    2. Blue house

    3. White house

    4. Red house

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    Correct Option: A
    Explanation:

    Greenhouse gases,

    Some greenhouse gases occur naturally and enter the atmosphere as a result of both natural processes (such as decomposition of organic matter) and human activity (such as burning fossil fuels and agriculture). Greenhouse gases that occur both naturally and from human activities include water vapor, carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O) and ozone (O3). Other greenhouse gases have essentially no natural sources, but are side products of industrial processes or manufactured for human purposes such as cleaning agents, refrigerants, and electrical insulators. These include the fluorinated gases: chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), hydrofluorocarbons (HCFCs), bromofluorocarbons (halons), perfluorocarbons, PFCs, nitrogen trifluoride, NF3, and sulfur hexafluoride, SF6.

    These gases contribute to atmospheric warming when they absorb infrared radiation emitted by the solar-warmed Earth and transfer their extra energy to the surrounding atmospheric gases.

    The most important layer of the atmosphere is ________.

    geography what is around us? atmosphere and its structures the atmosphere components of earth elements of weather and climate : temperature the earth's structure

    1. Troposphere

    2. Thermosphere

    3. Mesosphere

    4. Stratosphere

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    Correct Option: A
    Explanation:

    Troposphere is considered as the most important layer of atmosphere. It is the lower most layer of the Atmosphere. Its average height is 13 km. The thickness varies from 8 km to 18 km, with maximum at equator and minimum poles. All the atmospheric phenomena such as rains, wind, clouds, etc. take place in this layer. Troposphere contains roughly 80% of the mass of Earth's atmosphere and it composed of composed of nitrogen (78%) and life giving gas oxygen (21%) with small concentrations of other trace gases. Hence, Troposphere is very important for the existence of life on earth as it causes the cloud formation, raining and maintaining the heat balance of the earth.

    The lower layer of the atmosphere is known as __________.

    geography what is around us? atmosphere and its structures the atmosphere components of earth elements of weather and climate : temperature the earth's structure

    1. Mesosphere

    2. Ionosphere

    3. Troposphere

    4. Stratosphere

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    Correct Option: C
    Explanation:

    Troposphere,

    The troposphere is the lowest layer of the Earth's atmosphere. The air is very well mixed and the temperature decreases with altitude. Air in the troposphere is heated from the ground up. The surface of the Earth absorbs energy and heats up faster than the air does.

    As we go up the layers of the atmosphere, the pressure ________.

    evs - i what is around us? atmosphere and its structures the atmosphere components of earth elements of weather and climate : temperature the earth's structure

    1. Increases

    2. Decreases

    3. Remains the same

    4. All of these

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    Correct Option: B
    Explanation:
    The weight of the atmosphere acts as a force upon the underlying surface of the Earth. The amount of force exerted over an area of surface is called atmospheric pressure or air pressure. In the atmosphere, the air pressure at any point is caused by the weight per area of the air above that point. As we go up the layers of the atmosphere, fewer air molecules are above us. So, there will be less weight of air above us. Hence, atmospheric pressure always decreases as we move upward in the atmosphere.