Morning Star solutions for टोटल जियोग्राफी [इंग्रजी] इयत्ता ९ आयसीएसई chapter 12 - Composition and Structure of the Atmosphere [Latest edition]

The blanket of air surrounding the earth is known as the ______.

What is A% and B% as depicted in the diagram showing the composition of the atmosphere 

About 90 percent of air mass lies within about ______ from the earth's surface.

Name the densest layer of the atmosphere.

Mountain climbers set up camps at the base as well as at regular intervals along their climb. Why?

Assertion (A): The atmosphere is the most dynamic entity on the earth's surface.

Reason (R): Large masses of air are being moved up and down and across the surface of the earth.

The composition of the atmosphere makes it a dynamic entity, however there are four thermal layers. Which of the following is in the correct order from the surface of the earth?

Which amongst the following is not a domain of the Biosphere?

______ extends up to a height of about 400 km and is responsible for enabling radio communication.

The upper limit of the stratosphere is known as ______.

Assertion (A): About 90 per cent of the mass of air lies within a height of about 20 km from the surface of the earth.

Reason (R): The air of the lower layer is always heavier or denser, while the upper layers are thinner or less dense.

Name the uppermost layer in the structure of the atmosphere that gradually merges with interplanetary space.

Water vapour is added to the atmosphere by ______.

Clouds and weather phenomenon occur in the Troposphere but some clouds are found in the Mesosphere. Why?

Which of the following are the functions of the atmosphere?

The decrease in the temperature is known as the ______.

Name the layer which contains ions electrically charged particles which create a sheet like display of light known as Aurora Borealis in the northern hemisphere.

Assertion (A): The troposphere is heated more from below than from above.

Reason (R): The troposphere is heated by the incoming solar energy.

Which amongst the following is not a direct impact of Global Warming?

What is known as atmosphere?

Describe the composition of atmosphere.

Name the four layers of the atmosphere.

Give one function of the outer most layer which is Thermosphere.

What is known as troposphere?

List any two characteristics of the troposphere.

Mention the chief characteristics of stratosphere.

In which layer of atmosphere do all weather conditions occur?

Name the constituent gases of atmosphere which scientists consider responsible for climate change.

Pratap was travelling by air from Kolkata to Chennai. There was heavy storm and rain in Bhubaneswar. Pratap's flight had flown over Bhubaneswar during that storm and he did not feel any turbulence due to it. As a student of geography how would you explain this?

What is known as ozone layer?

What is leading to depletion of ozone layer in the atmosphere?

What would be the effect of Ozone Layer depletion?

List the natural causes of Ozone Layer depletion.

Could Ozone in the lower layer of the atmosphere make up for loss of Ozone in the Ozone Layer? Give reasons to support your answer.

What is known as Global Warming?

Name important Greenhouse gases.

Define atmosphere.

Name the four layers of atmosphere.

Mention any two functions of the atmosphere.

Give a reason for the following:

We find it difficult to breathe when we climb mountains.

Give a reason for the following:

The atmosphere is the most dynamic entity.

Give a reason for the following:

All the weather phenomena takes place in the troposphere.

What are the main components of the atmosphere? How does their composition support life on earth?

Describe the structure of the atmosphere based on the picture given above.

Explain the factors responsible for depletion of ozone in atmosphere.

State any three factors that lead to Global Warming.

Draw a well labelled diagram to explain the Greenhouse Effect.

Given below is the activity. How does which cause global warming?

Conversion of forest land into agricultural land.

Given below is the activity. How does, which cause global warming?

Construction of high rise buildings.

Given below is the activity. How does, which cause global warming?

Fossil fuel production.

Given below is the activity. How does, which cause global warming?

Transportation industry.

Do you think any one layer of the atmosphere is more significant than the other layers? If yes, which one and why? If not give reasons to support your answer.

How is the atmosphere responsible for Global Warming? What changes human beings can made in their lifestyle to preserve the atmosphere and check Global Warming?

Mention one significant effect of climate change that affects you.

Forest fires are becoming more frequent and disastrous sparking a global outrage. Prepare a project report on the causes and the effects, both short term and long term, of forest fires.