TERM II – CLASS IX CASE STUDY BASED GEOGRAPHY WORKSHEET ON CLIMATE

This year, Term II class IX Geography worksheet on climate is going to be very helpful for all Social Science students. You must be thinking why this year? This year because CBSE has changed the pattern of question paper. Now, there is no need to prepare short and long answer type questions from the Climate chapter. Moreover, even the teachers are preparing and encouraging students to solve case study based geography worksheet on climate. Therefore, this blog contains six case study based questions from climate chapter. There is one question which is data based as well. Solutions are also provided for term II, class IX case study based Geography worksheet on   Climate .

I. Read the following passage and answer the questions that follows:

Due to the curvature-of-the-earth , the amount of solar energy received varies according to latitude. As a result, air temperature generally decreases from the equator towards the poles. As one goes from the surface of the earth to higher altitudes, the atmosphere becomes less dense and temperature decreases. The hills are therefore cooler during summers. The pressure and wind system of any area depend on the latitude and altitude of the place. Thus it influences the temperature and rainfall pattern. The sea exerts a moderating influence on climate: As the distance from the sea increases, its moderating influence decreases and the people experience extreme weather conditions. This condition is known as continentality (i.e. very hot during summers and very cold during winters).

Ocean currents along with onshore winds affect the climate of the coastal areas, For example, any coastal area with warm or cold currents flowing past it, will be warmed or cooled if the winds are onshore.

1. Identify the six major control of climate. 1

2. Name the two factors that influence the amount of solar energy received by the earth . 1.

3. Give reasons: 2.

i) Why are hill stations cooler during summers? .

ii) What do you understand by continental type of climate?

Solutions:

Ans 1. Six major controls of climate are:

i) Latitude, Altitude, Pressure and wind system, Distance from the sea, Ocean currents and Relief features.

Ans 2. Two factors that influence the amount of solar energy received by the earth are:

i) curvature of the earth

ii) Latitude

Ans 3. i) We know that the as we go high from the sea level, the temperature decreases by 1° C with an ascent of 165m. As the hill stations are located at higher altitudes, therefore they are cooler during summers. For example Ooty is Cooler than Delhi.

ii) Continental type of climate means extremely hot in summers and extremely cold in winters.

They are not influenced by the sea. For example Delhi and Lucknow.

TERM II – CLASS IX CASE STUDY BASED GEOGRAPHY WORKSHEET ON CLIMATE

II. Read the following passage and answer the questions that follows:

The pressure and wind conditions over India are unique. During winter, there is a high-pressure area north of the Himalayas. Cold dry winds blow from this region to the low-pressure areas over the oceans to the south. In summer, a low-pressure area develops over interior Asia as well as over northwestern India. This causes a complete reversal of the direction of winds during summer. As the air moves from the high-pressure area over the southern Indian Ocean, in a south-easterly direction, crosses the equator, and turns right towards the low-pressure areas over the Indian subcontinent. These are known as the Southwest Monsoon winds. These winds blow over the warm oceans, gather moisture and bring widespread rainfall over the mainland of India. CLASS IX CLIMATE NOTES AND STUDY MATERIAL

The upper air circulation in this region is dominated by a westerly flow. An important component of this flow is the jet stream.

1. What makes the pressure and wind conditions over India unique? 1.

2. Define jet stream? 1.

3. What causes complete reversal of wind direction during summer? 2.

Solutions:

Ans 1.

Firstly, During winter, the winds blow in the NE direction from land to sea.

But, during summer the same winds reverse their direction and become SW winds.

Therefore, this complete reversal of the wind direction makes the pressure and wind conditions over India unique.

Ans 2.

As we know that Jet streams are the high velocity winds which blows in the upper layer of the atmosphere.

Ans 3.

We know that, during summer, direct rays of the sun falls on Tropic of cancer.

Due to which the air becomes hot and rises up.

As the air rises up, low pressure is created in the interiors of India.

This low pressure attracts winds from the Oceans where there is high pressure.

This causes complete reversal of wind direction during summer.

TERM II – CLASS IX CASE STUDY BASED GEOGRAPHY WORKSHEET ON CLIMATE

III. Read the following passage and answer the questions that follows:

By early June, the low-pressure condition over the northern plains intensifies. It attracts, the trade winds of the southern hemisphere. These south-east trade winds originate over the warm subtropical areas of the southern oceans. They cross the equator and blow in a south westerly direction entering the Indian peninsula as the south-west monsoon. As these winds blow over warm oceans, they bring abundant moisture to the subcontinent. These winds are strong and blow at an average velocity of 30 km per hour. With the exception of the extreme north-west, the monsoon winds cover the country in about a month.

The inflow of the south-west monsoon into India brings about a total change in the weather. Early in the season, the windward side of the Western Ghats receives very heavy rainfall, more than 250 cm. Deccan Plateau and parts of Madhya Pradesh also receive some amount of rain in spite of lying in the rain shadow area. The maximum rainfall of this season is received in the north-eastern part of the country. Mawsynram in the southern ranges of the Khasi Hills receives the highest average rainfall in the world. Rainfall in the Ganga valley decreases from the east to the west. Rajasthan and parts of Gujarat get scanty rainfall.

1. What are the two branches of Monsoon. 1.

2. Name the hills which receive highest rainfall in the world ? 1.

3. Give reasons: 2.

i) Why do Rajasthan and parts of Gujarat get scanty rainfall ?

ii) Rainfall in the Ganga valley decreases from the east to the west ?

Solutions:

Ans 1.

Two branches of Monsoon are:

a) Arabian sea branch and

b) Bay of Bengal branch.

Ans 2.

Khasi Hills, which lie in the North Eastern parts of India receives the highest rainfall in the world.

 Ans 3.

(i) Rajasthan and parts of Gujarat receive rainfall from the Bay of Bengal branch of Monsoon.

b) Therefore, by the time the Bay of Bengal branch of monsoon reaches Gujarat and Rajasthan, the winds looses its moisture.

c) Further, Aravali hills stop these winds and it rains on the windward side.

d) Therefore, rest part of Gujarat and Rajasthan get scanty rainfall.

Ans 3 ii) a) As we know that the Bay of Bengal branch of Monsoon move from East to West.

b) Moreover, these move up the Ganga valley along with Himalayas.

c) As these winds move from east to west, these become drier.

d) Therefore, rainfall in the Ganga valley decreases from the east to the west.

TERM II – CLASS IX CASE STUDY BASED GEOGRAPHY WORKSHEET ON CLIMATE

IV. Read the following passage and answer the questions that follows:

During October-November, with the apparent movement of the sun towards the south, the monsoon trough or the low-pressure trough over the northern plains becomes weaker. This is gradually replaced by a high-pressure system. The south-west monsoon winds weaken and start withdrawing gradually. By the beginning of October, the monsoon withdraws from the Northern Plains. The months of October-November form a period of transition from hot rainy season to dry winter conditions.

The retreat of the monsoon is marked by clear skies and rise in temperature. While day temperatures are high, nights are cool and pleasant. The land is still moist. Owing to the conditions of high temperature and humidity, the weather becomes rather oppressive during the day. This is commonly known as ‘October heat’

1. What do you understand by “period of transition”? 1.

2. What do you mean by “October heat”? 1.

3. Mention two features of retreating monsoon. 2.

Solutions:

Ans 1.

· Period of transition means period of change.

· In this case, during October and November, the weather changes from hot rainy season to dry winter conditions.

· This is known as period of transition.

 Ans 2.

·As we know that by the beginning of October, the monsoon withdraws from the Northern Plains.

· Moreover, the land is still moist.

· Due to the heat of the sun, evaporation takes place.

· Thus it makes the weather hot and humid which is very uncomfortable.

· It is known as “October heat”.

Ans 3.

Two features of retreating monsoons are:

a) The monsoon starts withdrawing gradually in the month of October.

b) It is marked by clear skies and rise in temperature.

TERM II – CLASS IX CASE STUDY BASED GEOGRAPHY QUESTIONS

V. Read the following passage and answer the questions that follows:

A striking feature of the hot weather season is the ‘loo’. These are strong, gusty, hot, dry winds blowing during the day over the north and northwestern India. Sometimes they even continue until late in the evening. Direct exposure to these winds may even prove to be fatal. Dust storms are very common during the month of May in northern India. These storms bring temporary relief as they lower the temperature and may bring light rain and cool breeze. This is also the season for localised thunderstorms, associated with violent winds, torrential downpours, often accompanied by hail. In West Bengal, these storms are known as the ‘Kaal Baisakhi’.

Towards the close of the summer season, pre-monsoon showers are common especially, in Kerala and Karnataka. They help in the early ripening of mangoes, and are often referred to as ‘mango showers’

1. Why is “Loo” considered to be fatal? 1.

2.Name two pre monsoon showers? 1.

3. With which states “Kaal Baisakhi” and “Mango Showers” associated? 2.

Solutions:

Ans 1.

Loo is a local wind which blows in the Northern plains during summer.

Moreover,  these winds are hot and dry, they pull moisture from the body and causes dehydration or shortage of water.

Therefore, direct exposure to these winds can be fatal.

Ans 2.

Two pre monsoon showers are Mango showers and Kaal Baisakhi.

Ans 3.

Firstly, Kaal Baisakhi is associated with West Bengal.

Secondly, Moreover,Mango showers are associated with Kerala and Karnataka.

TERM II – CLASS IX GEOGRAPHY WORKSHEET ON CLIMATE

You may find the following links useful:

CLASS IX – CLIMATE MCQ’s FOR NTSE PREPARATION

Class IX Term II Climate: How to write short answers in points?

GEOGRAPHY LESSON PLAN – IX – TERM II

QVI. Study the table given below and answer the following questions:

DATA BASED QUESTIONS FROM GEOGRAPHY WORKSHEET ON CLIMATE CLASS IX

Study the table given above and answer the following questions:

(a) Calculate the average temperature of this place.

(b) Which are the rainiest month and the driest month of this station?

(c) What is the range of temperature of this station?

(d) What type of climate does the place have and why?

Solutions:

(a) 28.6° C

(b) November is the rainiest month and February and March are the driest months.

(c) Range of Temperature is (33.0 – 24.5) = 8.5°C.

(d) The respective station has a maritime climate. Moreover,  It is because there is not much difference between the highest and lowest temperature of the year. So, In other words it has an equable climate.

CONCLUSION: TERM II – CLASS IX GEOGRAPHY WORKSHEET ON CLIMATE

Hope you will find this Geography worksheet on climate helpful. This Geography worksheet on climate is hot only for students but for the teachers as well. Now onwards students don’t need to learn long answers from climate for term II. As the CBSE has changed the pattern, now you need to solve this type of Geography worksheet on climate. But, for competitive exams, you also need to know difficult concepts from this chapter. 

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