Morning Star solutions for Total Geography [English] Class 9 ICSE chapter 14 - Atmospheric Pressure and Winds [Latest edition]

Assertion (A): Variations in pressure cause horizontal movements of air called winds.

Reason (R): Winds transport heat and moisture from one region to another and affect both temperature and humidity.

The decrease in the pressure per unit distance in the direction in which the pressure decreases most rapidly is called ______.

What are also called the Horse Latitude?

Which pressure belt is also called Doldrums?

Which amongst the following is NOT a characteristic of Trade Winds?

Alps: ______ : : Rockies : ______

What is the tropical cyclone over land called?

Study the direction of wind in the picture. The anticyclone is occurring in the ______.

The concentrated bands of rapid air movement at the tropopause ______.

Which of the following is true about Jet streams?

Calm region in the centre of the cyclone:

Which of the following is NOT a tropical cyclone?

Your uncle was puzzled because his flight from Delhi to London was more than `9 1/2` hours long but his return from London was about `8 1/2` h hours. As a student of geography how would you explain this to him?

Name the four main pressure belts of the earth.

What is Circum-polar Low-Pressure Belt?

How does the Coriolis Force vary latitudinally?

Name the three chief types of wind.

What are periodic winds?

What are local winds?

Name any two local winds.

Name two types of variable winds? Why are they so called?

Why are cyclones frequent in summer in the tropical region?

Mention any two differences between tropical cyclones and temperate cyclones.

How are cyclones named differently in different parts of the world? 

What are the two chief characteristics of anticyclones?

Define the following term:

Pressure Gradient

Define the following term:

Winds

Define the following term:

Coriolis force

Define the following term:

Altitude

Define the following term:

Monsoons 

Distinguish between the following:

Cyclones and Anticyclones.

Distinguish between the following:

Permanent and Periodic Winds.

Distinguish between the following:

Summer and Winter Monsoons.

What is meant by the term ‘Atmospheric Pressure’?

Explain briefly the factors that affect Atmospheric Pressure.

Give reasons for the following:

The Westerlies in the Southern Hemisphere blow with greater force than those in the Northern Hemisphere.

Give reasons for the following:

There is a seasonal shifting in pressure belts.

Give reasons for the following:

As we go higher, the atmospheric pressure decreases.

Draw a well labelled diagram showing the pressure and wind belts of the earth.

Briefly explain the three chief types of winds.

Describe some of the important types of local winds.

Give reasons for the following:

The winds are directed to the right of their flow in the Northern Hemisphere.

Give reasons for the following:

Temperature and pressure are inversely related to one another.

Give reasons for the following:

Humid air is lighter than dry air.

What is Coriolis Effect?

How does Coriolis affect the planetary winds?

Explain the weather conditions associated with tropical temperate cyclone.

Explain the weather conditions associated with temperate cyclone.

What are the Jet Streams? 

What is the significance of the Jet Streams?

Give a geographical reason for the following:

Doldrums is a low pressure belt.

Give a geographical reason for the following:

Equatorial regions have low atmospheric pressure throughout the year.

Give a geographical reason for the following:

Low atmospheric pressure prevails over the Circum-polar region.

Draw a well labelled diagram showing a cyclone in the Northern Hemisphere.

State two situations when you physically felt the effect of the atmospheric pressure. Give reasons to support your answer.

You must have read in newspapers or seen on TV channels, the news of cyclonic storms like Amphan, Nisarga, Fani, Yaas, Tauktae, Gulab, etc. affecting different parts of the country. Find out the origin and effects of at least three of these cyclonic storms.

In 2019, the Arabian Sea recorded the formation of four cyclones, Vayu, Hikka, Kyarr and Mahaa phenomenon after more than a century. Formation of cyclonic storms is normal in the Arabian Sea but rare if it develops in October-November. Usually the Bay of Bengal sees cyclones during this period. Prepare a project report tracing cyclonic storms that occurred along the eastern coast as well as the western coast of India over last ten years.