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SOCIAL SCIENCE (GEOGRAPHY)
Chapter-1 Environment
WORKSHEET (CLASS-VII)
Level -1 Questions :-
Q.1
Define the term Environment.
पर्यायवरण शब्द का वर्णन कीजिये |
1
Q.2
What are three components of Environment?
पर्यायवरण के तीन तत्व कौन-से है ?
3
Q.3
Give any two examples of natural Environment.
प्राकृतिक पर्यायवरण के कोई दो उदारहण दीजिये |
1
Q.4
Give any two examples of Human Made Environment.
मानव निर्मित पर्यायवरण के कोई भीदो उदारहण दीजिये |
1
Q.5
Give any three examples of Human Environment.
मानव पर्यायवरण कोई भीतीन उदारहण दीजिये |
3
Q.6
What are the Biotic and Abiotic components of environment?
जौविक एवं अजौविक पर्यायवरण के तत्व कौनसे है?
3
Q.7
Give any two examples each from Biotic and Abiotic environment.
जौविक एवं अजौविक पर्यायवरण के कोई भीदो उदारहण दीजिये |
3
Q.8
What is Natural Environment?
प्राकृतिक पर्यायवरण क्या होता है ?
1
Q.9
What are the four major domains of the Earth?
पृथ्वी की चार मुख्य परिमंडल कौन-सेहै ?
3
Q.10
Define the term Lithospare.
स्थल मंडल को परिभाषित कीजिये |
1
Level -2 Questions :-
Q.11
Explain the importance of Lithospare.
स्थल मंडल के महत्व का वर्णन कीजये |
1
Q.12
Explain the term Hydrosphere.
जल मंडल का वर्णन कीजिये |
1
Q.13
What do you mean by the Atmosphere?
वायुमंडल से आप क्या समझते है ?
1
Q.14
Write the composition of the Atmosphere.
वायुमंडल के संघटन को लिखिए |
1
Q.15
What is Biosphere?
जैव मंडल क्या है ?
1
Q.16
Why is Biosphere necessary for living organism?
जीव जन्तुओं के लिए जैव मंडल क्यों आवश्यक है ?
1
Q.17
Define the term Ecosystem.
पारिस्थितिकी तंत्र की व्याख्या कीजिये |
3
Q.18
When is world Environment day celebrated?
विश्व पर्यायवरण दिवस कब मनाया जाता है ?
1
Level -3 Questions and Answers:-
Q.19
Define Barter System.
वस्तु विनिमय प्रणाली की व्याख्या कीजिये|
1
Q.20
What is Human Environment?
मानव पर्यायवरण क्या है ?
1
Q.21
Why is Human Environment important for human beings?
मानव पर्यायवरण मनुष्यों के लिए क्यों आवश्यक है ?
3
Q.22
Give four examples of Human Made Environment.
मानव निर्मित पर्यायवरण के चार उदाहरण दीजिये |
3
Q.23
What are the major threats to Environment?
पर्यायवरण के लिए मुख्य चुनौतियाँ क्या है ?
3
Q.24
How men could modify his Environment?
मानव किस तरह से उसके पर्यायवरण को परिवर्तीत कर सकता है ?
3
Q.25
Explain the interdependence of Plants and Animals.
पौधों एवं जानवरों के मध्य आपसी निर्भरता का वर्णन कीजिए |
3
Q.26
Match the following:-
निम्न जोड़ों को मिलायें :-
A
Biosphere
जैव मंडल
i
Blanket of air which surrounded the earth.
वायु की परत जो कि पृथ्वी के चारों और घेरे हुई है |
B
Atmosphere
वायु मंडल
ii
Domain of water
जलीय क्षेत्र
C
Hydro spare
जल मंडल
iii
Narrow zone where land, water and air interacts.
वह संकीर्ण क्षेत्र जहाँ जल स्थल और वायु पारस्परिक क्रियां करते है |
D
Environment
पर्यायवरण
iv
Our surroundings.
हमारे आस पास का क्षेत्र |
3
Q.27
Fill in the blanks:-
रिक्त स्थानों की पूर्ति कीजिए :-
3
1. Plant and_____________ depend on each other.
पौधे एवं _____________________ एक दूसरे पर आश्रित होते है |
1. 5th June is celebrated in the world as ________________ day.
5 जून को ______________ दिवस के रूप में मान्य जाता है |
1. ______________is the example of Abiotic element.
__________________अजौविक तत्व का एक उदहारण है |
SOCIAL SCIENCE (GEOGRAPHY)
Chapter-1 Environment
WORKSHEET (CLASS-VII)
Level -1 Answers:-
Ans.1
Environment is our basic life system. It provides as air, water, and land.
1
Ans.2
1. Natural Environment.
2. Human Made Environment.
3. Human Environment.
3
Ans.3
Atmosphere, Hydrosphere, land.
1
Ans.4
Buildings, Roads, Industries, monuments.
1
Ans.5
Community, Educational, Economic, Religion.
1
Ans.6
Biotic
Abiotic
The world of living organism.
Example:-Plants and Animals.
The world of non-living elements.
Example:-Land, Clouds .
3
Ans.7
Biotic
Abiotic
Example:-Plants and Animals.
Example:-Land, Clouds.
3
Ans.8
Land, Water, Air, Plants, and Animals comprise the Natural Environment. It includes Lithosphere, Hydrosphere, Atmosphere and Biosphere.
1
Ans.9
Lithosphere, Hydrosphere, Atmosphere and Biosphere.
3
Ans.10
Lithosphere is the solid crust, or a top layer of the Earth. It is made up of rocks and minerals and covered with the thin layer of soil.
1
Level -2 Questions and Answers:-
Ans.11
It is important because:-Lithosphere is a domain that provides us forest, grassland, agricultural land, minerals, and land for human settlement.
1
Ans.12
Hydrosphere compasses various sources of water and different types of water bodies like rivers, lakes, seas, ocean etc. it is essential for all living organism.
1
Ans.13
The Atmosphere is the thin layer of air that surrounded the Earth. The gravitational force of the earth holds the atmosphere around it.
1
Ans.14
Nitrogen and Oxygen are two gases which make up the bulk of the Atmosphere. Other gases are Carbon dioxide, Helium, Ozone, Argon and Hydrogen.
1
Ans.15
Biosphere is the narrow zone of the Earth where land, water and air interact with each other to support life.
1
Ans.16
The Biosphere is necessary because the land, water, air interact with each other to support life.
1
Ans.17
It is a system are formed by the interaction of all living organisms with each other and with the physical and chemical factors of the environment in which they live, all linked by transfer of energy and material.
3
Ans.18
5th June every year the world environment day is celebrated.
1
Level -3 Questions and Answers:-
Ans.19
It is a system of trade in which goods are exchange without use of money.
1
Ans.20
Human environment is the environment which reveals the activities, creations and interaction among the human beings.
1
Ans.21
1. Human being interacts with the environment and modifies it according to their needs.
2. Human learns new ways to use and change environment.
3
Ans.22
Transportation, Industries, Buildings and Monuments.
3
Ans.23
Pollution, Population explosion, Environmental degradation.
3
Ans.24
Human being interacts with the environment and modifies it according to their needs. Pollution, population explosion, environmental degradation. Containers for food and water are the examples of modification of environment.
3
Ans.25
Plants and animals are dependent on each other. This relation between the living organisms as well as relation between the organisms and their surroundings form an ecosystem.
3
Ans.26
A
Biosphere
जैव मंडल
i
Narrow zone where land, water and air interacts.
वह संकीर्ण क्षेत्र जहाँ जल स्थल और वायु पारस्परिक क्रियां करते है |
B
Atmosphere
वायु मंडल
ii
Blanket of air which surrounded the earth.
वायु की परत जो कि पृथ्वी के चारों और घेरे हुई है |
C
Hydro spare
जल मंडल
iii
Domain of water
जलीय क्षेत्र
D
Environment
पर्यायवरण
iv
Our surroundings.
हमारे आस पास का क्षेत्र |
Ans.27
(i) Animals.
(ii) World Environment day.
(iii) Land.
3
Lesson 2 InsideOur Earth
LEVEL -1 QUESTIONS:-
Q.1
Define the term Crust.
पर्पटी शब्द की व्याख्या कीजिये |
1
Q.2
Name the first layer which is inside of Earth.
पृथ्वी के अंदर की प्रथम परत का नाम बताईये |
1
Q.3
Define the term Sial.
सियाल शब्द को परिभाषित कीजिये |
1
Q.4
What is Sima?
सीमा क्या है ?
1
Q.5
Name the second layer of the Earth.
पृथ्वी के अंदर की द्वितीय परत का नाम बताईये |
1
Q.6
What is the depth of layer Mantle?
मेंटल परत की गहराई कितनी है ?
Q.7
Which is the innermost layer of the Earth?
पृथ्वी की आन्तरिक परत कौनसी है ?
1
Q.8
What is the radius of Core?
कोर की परिधि कितनी है ?
1
LEVEL -2 QUESTIONS:-
Q.9
Define the Nife.
नीफे को परिभाषित कीजिये |
1
Q.10
Core is made up of which mineral?
कोर किन खनिजों से बना हुआ है ?
1
Q.11
What is rock?
शैल क्या है ?
1
Q.12
Name three types of rocks.
तीन प्रकार की शैलों के नाम बताईये |
3
Q.13
What are Primary rocks?
प्राथमिक शैल क्या होते है ?
1
Q.14
Differentiate between intrusive rocks and extrusive rocks
बहिर्भेदी एवं अन्तर्भेदी शैलों के मध्य अंतर स्पष्ट कीजिए |
3
Q.15
Explain the extrusive igneous rocks
अन्तर्भेदी आग्नेय शैलों का वर्णन कीजिये |
1
Q.16
Explain the intrusive igneous rocks.
बहिर्भेदी आग्नेय शैलों का वर्णन कीजिये |
3
LEVEL -3 QUESTIONS:-
Q.17
What are the sedimentary rocks explain with examples?
उदाहरणों की सहायता से अवसादी शैलों का वर्णन कीजिये |
1
Q.18
What are metamorphic rocks define and give two examples
कायांतरित शैलों किन्ही कहते है? किन्ही भी दो उदाहरणों की सहायता से बताईये |
1
Q.19
How the rocks are useful for us.
शैल किस प्रकार से हमारे लिए उपयोगी है ?
1
Q.20
What is rock cycle?
शैल चक्र क्या होता है ?
1
Q.21
Define the rock cycle with the help of labeled diagram in a neat manner.
साफ़ सुथरे चित्र की सहायता से शैल चक्र का वर्णन कीजिये |
3
Q.22
What are minerals?
खनिज क्या होते है ?
3
Q.23
Tick the correct answers:-
सही उत्तर को चिह्नित कीजिये:-
5
I.
The rock which is made up of molten magma is :-
पिघले हुए मैग्मा से निर्मित शैल को कहते है :-
A. Igneous
आग्नेय
B. Sedimentary
अवसादी
C. Metamorphic
कायांतरित
ii.
The inner most layer of the Earth is:-
पृथ्वी की आन्तरिक परत को कहते है:-
A. Crust
क्रस्ट
B. Core
कोर
C. Mantle
मैटल
iii.
Gold, petroleum and coal are the examples of:-
सोना, पेट्रोल एवं कोयला उदहारण है:-
a. Rocks
शैल
b. Minerals
खनिज
c. Fossils
जीवाश्म
iv.
Rocks which contains fossils are:-
शैल जो की जीवाश्म को धारित किये हुए होते है :-
d. Sedimentary
अवसादी
e. Metamorphic
कायांतरित
f. Igneous
आग्नेय
D. The thinnest layer of the Earth is:-
पृथ्वी की सबसे पतली परत है :-
a. Crust
क्रस्ट
b. Mantle
मेंटल
c. Core
कोर
Q.24
Match the following:-
निम्न जोड़ो को मिलाये :-
5
A
Sial
सियाल
I
Changes into slate
स्लेट में परिवर्तित होना
B
Clay
चिकनी मिट्टी
Ii
Used for roads and buildings
सड़के एवं भवनों के निर्माण में उपयोग करना
C
Rocks
शैल
Iii
Has definite chemical composition
सुनिचित रसायनिक सरचना का होना
D
Mineral
खनिज
Iv
Innermost layer
सबसे आन्तरिक परत
e
Core
कोर
v
Made up of Silicon and Alumina
सिलिकॉन एवं अलिमुनियम से निर्मित
Lesson 2 InsideOur Earth
LEVEL -1 ANSWERS:-
Ans.1
The uppermost layer of the Earth surface is called Crust.
1
Ans.2
The first layer of the Earth surface Core.
1
Ans.3
The continental mass of the crust consisting of Silicon and Alumina is called Sial.
1
Ans.4
The oceanic Crust purely made of Silicon and Magnesium is called as Sima.
1
Ans.5
Mantle is the second layer of the Earth.
1
Ans.6
The depth of Mantle is2900 km.
1
Ans.7
The innermost layer of the Earth is Core.
1
Ans.8
The radius of the core is 3500 km.
1
LEVEL -2 ANSWERS:-
Ans.9
The innermost layer of earth made of Nickel and Ferrous is called Nife .
1
Ans.10
Core is madeup of Nickel and Iron.
1
Ans.11
Natural mass of mineral matter that makes up Crust of the Earth is called rock.
1
Ans.12
1.Igneous rock
2.Sedimetory rocks
3. Metamorphic rocks.
3
Ans.13
Igneous rock is also called Primary rocks are formed by the solidification of lava .
1
Ans.14
Extrusive rock
Intrusive rock
When magma comes out of the earth, it cool down and turns in to solid rocks, is called extrusive rock. eg.- Basalt.
When the molten magma cools down within the interior of the earth, it becomes the solid to form intrusive rock.
3
Ans.15
When magma comes out of the earth, it cool down and turns in to solid rocks, is called extrusive rock. eg.- Basalt.
1
Ans.16
When the molten magma cools down within the interior of the earth, it becomes the solid to form intrusive rock.
3
Ans.17
Deposition and accumulation of sediments from sedimentary rocks for eg. Sand stone.
1
Ans.18
When under heat and pressure igneous rock and sedimentary rocks change their form and more precious rock are formed to be known as metamorphic rocks.
1
LEVEL -3 ANSWERS:-
Ans.19
Used in making building, Bridges.
Used in numerous games: stapu and phitthoo.
1
Ans.20
One type of rock changes in to another type under certain conditions in a cyclic manner. This process of transformation of the rock from one to another is known as rock cycle.
1
Ans.21
The process of transformation of the rock from one to another is known as the rock cycle .When the magma cools it solidifies to become igneous rock. These rock are change in to sedimentary rock under heat and pressure change in to metamorphic rock into igneous rock or sedimentary rock due to melting down .This process is called rock cycle.
3
Ans.22
Minerals are the naturally occurring substances which have certain physical properties and chemical composition .Minerals are used in fuels, medicines and industries.
3
(i) The rock which is made up of molten magma is :-
5
Ans.(i)
Igneous.
ii.
The inner most layer of the Earth is:-
Ans.
Core
iii.
Gold, petroleum and coal are the examples of:-
Ans.
Minerals
iv.
Rocks which contains fossils are:-
Ans.
Sedimentary
D. the thinnest layer of the earth is:-
Ans.
Crust.
Q.24
Match the following:-
5
Ans.24
A
Sial
सियाल
I
Made up of silicon and alumina
सिलिकॉनएवंअलिमुनियमसेनिर्मित
B
Clay
चिकनीमिट्टी
Ii
Changes into slate
स्लेटमेंपरिवर्तितहोना
C
Rocks
शैल
Iii
Used for roads and buildings
सड़केएवंभवनोंकेनिर्माणमेंउपयोगकरना
D
Mineral
खनिज
Iv
Has definite chemical composition
सुनिचितरसायनिकसरचनाकाहोना
e
Core
कोर
v
Innermost layer
सबसेआन्तरिकपरत
5
Chapter-3 Our Changing Earth
LEVEL-1 QUESTIONS:-
Q.1
Distinguish between the following:-
निम्न के मध्य अंतर स्पष्ट कीजिये :-
A
The difference between vent and crater
वेंट एवं क्रेटर के मध्य अंतर |
2
B
The difference between dormant and extinct volcanoes
सक्रीय एवं सुप्त जवालामुखियों के मध्य |
3
C
The difference between focus and epicenter
केंद्र एवं अभिकेन्द्र के मध्य |
2
D
The difference between seismology and seismologist
सिस्मोलोजी एवं सिस्मोलोजिस्ट के मध्य |
2
Q.2
Explain the following terms:-
निम्न शब्दों को परिभाषित कीजिये :-
6
1 Pangaea2. Plate Tectonics3. Active volcanoes4. Primary waves5. Surface waves6. Richter scale.
1.पौन्जिया 2. प्लेट विवर्तनी 3. सक्रिय ज्वालामुखी 4. प्राथमिक तरंगे 5. धरातलीय तरंगे 6. रिचटर स्केल
LEVEL-2 QUESTIONS:-
Q.3
Give very short answers for these questions:-
निम्न प्रश्नों के लिए अति लधु उत्तर दीजिये :-
A
Name the force which originates from within the earth.
पृथ्वी के द्वारा स्वंय उत्पन्न किये जाने वाले बल का नाम बताईये |
1
B
What is the name given to those volcanoes which have not erupted for hundreds of years?
उन ज्वालामुखियों का क्या नाम दिया गया है जोकि लगभग 100 वर्षो से लुप्त से हो गए है ?
1
C
What is the shaking of the earth’s surface due to sudden movement called?
अचानक से होने वाले झटकों से पृथ्वी के हिलने को क्या नाम दिया गया है ?
1
D
Name the instrument used to record earthquake tremors.
भूकंप को मापने वाले यंत्र का नाम बताये |
1
LEVEL-3 QUESTIONS:-
Q.4
Give short answers (in 20-40 words) for these questions.
निम्न प्रश्नों के संक्षिप्त उत्तर दीजिये (20-40 शब्दों में )
A
Explain Wegener’s Theory of Continental Drift.
वेगनर के महाद्वीपीय विस्थापन के सिद्धांत को बताईये |
3
B
Explain how earthquakes occur?
वर्णन कीजिये की किस प्रकार से भूकंप आते है?
3
C
3. Name the major earthquake belts of the earth. Where are they located?
पृथ्वी के प्रमुख भूकंप प्रभावित क्षेत्रों के नाम बताईये | वे कहाँ पर स्थित है ?
3
D
What are the causes of the Bhuj earthquake?
भुज में आने वाले भूकंप के प्रमुख कारक क्या थे ?
3
i.
Q.5
Give long answers in (50-70 words) for these questions.
निम्न प्रश्नों के विस्तृत उत्तर दीजिये (50-70 शब्दों में )
A
Explain the concept of Plate Tectonics.
प्लेट विवर्तनी के सिद्धांत को समझाए |
4
B
Explain the different types of forces.
विभिन्न प्रकार के बालों का वर्णन कीजिये |
4
C
How are volcanoes distributed on the earth?
ज्वालामुखी किस प्रकार से पृथ्वी पर वितरित किये हुए है ?
4
D
Describe the different types of earthquake waves.
विभिन्न प्रकार की भूकंपीय तरगों को बताईये |
4
i.
Chapter-3 Our Changing Earth
LEVEL-1 ANSWERS:-
ANS.1. A
Vent
Crater
A vent is a circular opening through which molten material erupt suddenly.
A crater is a funnel shape hollow formed at the top of a volcanic cone.
2
ANS.B
Dormant volcano
Extinct volcano
a. The volcanoes which have become quiet after erupting are called dormant volcanoes.
a. The volcanoes which have not erupted for hundreds of years are called extinct volcanoes.
b. These volcanoes are also called sleeping volcanoes.
b. These volcanoes are also called dead volcanoes.
c. Vesuvius is an example of dormant volcano.
c. Kilimanjaro and Rainier are examples of extinct volcanoes.
3
ANS.C
Focus
Epicenter
Focus is the place of origin of an earthquake inside the earth.
Epicenter is the point on the earth’s surface which is vertically above the focus.
2
ANS.D
Seismology
Seismologist
The science which deals with the earthquakes is called seismology.
The scientist who studies earthquakes is called seismologist.
2
ANS.2
1. Millions Of years ago, all continents were joining together into a supercontinent. This super continent was known as Pangaea. The concept of Pangaea was put forward by a German meteorologist named Alfred Wegener while attempting to explain the present day distribution of continents and oceans through his continental drift.
6
2. The improvement of Wagener’s theory of continental drift and the inclusion of the idea of sea-floor spreading led to the development of the concept of Plate Tectonic. According to Plate Tectonics, the earth’s crust consists of six major and 20 minor tectonic plates all of which float independently. The energy required to move these plates is produced by the internal heat of the earth.
3. The volcanoes which erupt frequently and throw out lava, gases, ashes and rocks are called active volcanoes. Ex:- Stromboli, Etna volcanoes.
4. The earthquake waves which are the first to arrive are called the primary waves. These waves travel very fast at a speed of about six km per second and cause small displacements.
5. The earthquake waves which travel over the surface of the earth are called surface waves. These waves are last to arrive. They are very powerful and cause most of the damage.
6. The instrument used to measure the intensity of earthquake is the Richter scale. This scale ranges from zero to nine. It shows the force of the earthquake.
LEVEL-2 ANSWERS:-
ANS.3
1. The force which originates from within the earth is called endogenic force.
1
ANS
2. Volcanoes which have not erupted for hundreds of years are called extinct or dead volcanoes.
1
ANS
3. The shaking of the earth’s surface due to sudden movement is called earthquake.
1
ANS
4. The instrument used to record earthquake tremors is called seismograph.
1
LEVEL-3 ANSWERS:-
ANS.4
1. In 1912 Alfred Wegener put forward the theory of continental drift to explain the present day distribution of continents and oceans. The theory states that millions of years ago all land mass were joined together into a supercontinent called the Pangaea. Later, the Pangaea broke and the continents drift apart due to horizontal displacement.
3
ANS
2. Earthquake can occur as a result of volcanic eruption, movement o f lithospheric plate and bomb explosions. An earthquake occurs due to lithospheric plate movement when two plates move past each other in opposite directions. The edges of the plates grind with each other while passing and this build up pressure on the rocks. When the pressure exceeds the rock strength, the rocks fracture to cause an earthquake.
3
ANS
The major earthquake belts of the Earth are:-
3
Circum-Pacific belt: It is located along the coastal margins of North America, South America and east Asia.
i. Mid-Continental Belt: It is located in the Alpine mountains, Mediterranean Sea, northern and eastern Africa and the Himalayas.
ii. Mid- Atlantic Ridge belt: It is located along the Mid-Atlantic ridge and in the adjoining islands.
The earthquake belt in India is mainly confined to the Himalayan region and the Ganga-Brahmaputra valley.
ANS
The causes of the Bhuj earthquake were:-
ii. Sea-floor spreading of the Indian Ocean at the rate of five cm per year.
iii. Gradual northward movement of the Indian plates.
iv. The reactivated faults below the surface in the Kachchh region.
3
ANS.5
1. The concept of plate tectonic is based on Wagener’s Theory of continental drift and the idea of sea-floor spreading. According to Plate Tectonics, the earth’s crust consists of six major and 20 minor tectonic plates. These plates are called lithospheric or tectonic plates. All the plates float independently. They move continuously but very slowly at the rate of about a few millimeters every year. The energy required to move these plates is produced by the internal heat of the earth.
4
ANS
2. The forces help in the movements of the lithospheric or tectonic plates. On the basis of their sources of origin, forces are of two types namely endogenic and exogenic.
4
Endogenic Forces:- The forces which originate from within the earth are called endogenic forces. These forces can produce slow or sudden movement or both. They also cause horizontal and vertical movements.
Exogenic Forces:- The forces which originate on the earth’s surface are called exogenic forces. Erosional and depositional work by rivers, wind, glaciers and sea waves are examples of exogenic forces.
ANS
3. The volcanoes of the world are distributed along two major belts namely the Pacific Ring of fire and the Mid-World Mountain belt. Most of the active volcanoes of the world are located along a circular belt around the Pacific Ocean. Thus this belt is known as the ‘Pacific Ring of Fire’ and it coincides with the edge of the lithospheric plates. The dormant and extinct volcanoes are mostly located along the Mediterranean Sea. This belt is known as the Mid-World Mountain belt.
4
ANS
4. There are three types of earthquake waves classified on the basis of their mode of travel. They are-
ii. Primary Waves:- The earthquake waves which are the first to arrive are called the primary waves. These waves travel very fast at a speed of about six km per second and cause small displacements.
iii. Secondary Waves:- The secondary waves arrive after the primary waves. They produce a strong shaking action.
iv. Surface Waves:- The earthquake waves which travel over the surface of the earth are called surface waves. These waves are last to arrive. They are very powerful and cause most of the damage.
4
Chapter-4 AIR
LEVEL-1 QUESTIONS:-
Q.1
What is Atmosphere?
वायुमंडल किसे कहते है ?
1
Q.2
Name any two major gases of Atmosphere.
वायुमंडल की दो प्रमुख गैसों के नाम लिखिए ?
1
Q.3
What is the percentage of oxygen in the Atmosphere?
वायुमंडल में ओक्सिजन गैस का प्रतिशत कितना है ?
1
Q.4
What is the percentage of Nitrogen in the Atmosphere?
वायुमंडल में नाइट्रोजन गैस का प्रतिशत कितना है ?
1
Q.5
Which gas creates green house effect in the Atmosphere?
वायुमंडल में कौन-सी गैस हरित गैसीय प्रभाव को व्यक्त करती है ?
1
Q.6
In how many layers our atmosphere is divided?
वायुमंडल को कितनी परतों में बंटा गया है ?
1
Q.7
Name the three layers of the Atmosphere.
वायुमंडल की किन्ही भी तीन परतों के नाम लिखिए |
3
Q.8
Why troposphere is most important layer of the Atmosphere?
समतापमंडल को वायुमंडल की एक अति महत्वपूर्ण परत के रूप में क्यों जाना जाता है ?
3
Q.9
Write four features of Stratosphere.
समतापमंडल की चार विशेषताएं को लिखिए ?
4
Q.10
Write a short note on Mesosphere.
मध्यमंडल पर एक टिप्पणी लिखिए |
4
LEVEL-2 QUESTIONS:-
Q.11
Write four features of layer Thermosphere.
बाह्य मंडल की चार विशेषताएं को लिखिए |
4
Q.12
Differentiate between Weather and Climate.
मौसम एवं जलवायु के मध्य अंतर स्पष्ट कीजिये |
3
Q.13
Define the term temperature.
तापमान शब्द को परिभाषित कीजिये |
3
Q14
Define the term Isolation.
आतपन (सूर्यताप) शब्द को परिभाषित कीजिये |
3
Q15
What is air pressure? Explain it.
वायुदाब क्या होता है ? वर्णन कीजिये |
3
Q.16
Draw the diagram of layer of atmosphere.
वायुमंडल की परतों का एक चित्र बनाईये |
3
Q.17
What is wind?
वायु क्या है ?
3
Q.18
Name the three types of winds.
तीन प्रकार की वायु के नाम लिखिए |
3
Q.19
Define the permanent wind.
स्थाई पवनों को परिभाषित कीजिये |
3
Q.20
Explain the seasonal winds.
मौसमी पवनों का वर्णन कीजिये |
3
LEVEL-3 QUESTIONS:-
Q.21
What is local wind? Give two examples.
स्थानीय पवने क्या होती है ? कोई दो उदारहण दीजिये |
3
Q.22
Write a short note on cyclone.
चक्रवात पर एक संक्षिप्त टिप्पणी लिखिए |
4
Q.23
Name the three types of rainfall.
तीन प्रकार की पवनों के नाम लिखिईये |
3
Q.24
Explain the orographic rainfall.
पर्वतीय वर्षा किसे कहते है
3
Q.25
Explain the conventional rainfall.
संवहनीय वर्षा किसे कहते है वर्णन करे .
3
Q.26
Explain the cyclonic rainfall.
चक्रवातीय वर्षा का वर्णन कीजिये |
3
Q.27
What is Precipitation?
वर्षण किसे कहते है
Q.28
Define the term humidity.
आर्दता किसे कहते है
3
Q.29
Name three forms of perception.
वर्षण के तीन प्रकार लिखिए
3
Q.30
Name the gas which protects us from harmful sun rays.
कौन सी गैस हमें सूर्य की हानिकारक किरणों से बचाती है
1
Chapter-4 AIR
LEVEL-1 ANSWERS:-
Ans.1
Blanket off air surrounding the earth is known as the atmosphere.
1
Ans.2
Nitrogen-78%, Oxygen-21%.
1
Ans.3
Oxygen-21%.
1
Ans.4
Nitrogen-78%.
1
Ans.5
Carbon dioxide.
1
Ans.6
Our atmosphere is divided into five layers.
1
Ans.7
1. Troposphere 2. Stratosphere. 3. Mesosphere.
3
Ans.8
It is most important layer of the atmosphere.
1. Its average height of 13 kms.
2. The air we breathe exist here.
3. All the weather phenomena like rainfall, fog occur in this layer.
3
Ans.9
1. It extents up to the height of 50 kms.
2. This layer is almost free from weather phenomena.
3. It has most ideal conditions for flying aero planes.
4. It has layer of ozone gas.
4
Ans.10
1. This is the third layer of the atmosphere.
2. It lies above the stratosphere.
3. It extents up to the height of 80 kms.
4. Meteorites burn up to in this layer on entering from the space.
4
LEVEL-2 ANSWERS:-
Ans.11
1. In thermosphere temperature raises very rapidly with increasing height.
2. Ionospheres are the part of this layer.
3. It extends between 82-400 kms.
4. This layer helps in radio transmit ion.
4
Ans.12
Weather
Climate
1
Weather is this hour to hour, day to day condition of the atmosphere.
1
The average weather condition of a place for a longer period of time represents the Climate.
2
It is state of atmosphere at any given point of time.
2
Climate is not at any given point of time it is long duration of time.
3
Ans.13
The temperature you feel everyday is the temperature of the atmosphere. The degree of coldness and hotness of the air is known as temperature.
3
Ans.14
Isolation is the incoming solar energy intercepted by the earth .
3
Ans.15
1. Air pressure is defined as the pressure exerted by the weight of air on the earth surface.
2. Horizontally the distribution of air pressure is influence by the temperature of the air at a given place.
3. In areas where temperature is high the air gets heated and rises.
3
Ans.16
Layers of the atmosphere [Fig ;: 2 on peg 22 ]
3
Ans.17
The movement of air from high pressure to low pressure areas is called wind.
3
Ans.18
1. Permanent wind
2. Seasonal wind.
3. Local wind
3
Ans.19
Permanent winds: The trade winds; western lies and easterlies are the permanent winds. These blow constantly throughout the year in a particular direction.
3
Ans.20
Seasonal winds:- These winds change their direction in deferent seasons .
3
LEVEL-3 ANSWERS:-
Ans.21
Local winds: These blow only during particular period of the day in a small area .Eg : land breeze sea breeze and Loo .
3
Ans.22
A powerful destructive storm with very high speed winds that moving in the circular motion around an area of low pressure.
3
Ans.23
1. Cyclonic rainfall
2. Relief rain fall
3. Convectional rainfall
3
Ans.24
Orographic rainfall: - It is called relief rain fall also.
3
Ans.25
Conventional rainfall often occurs in interior areas of the earth.
3
Ans.26
Cyclone originated depression in the bay of Bengal.
3
Ans.27
When the droplets of water became too heavy to float in the air then they come down as a perception. For example rain, hail snowfall shower.
3
Ans.28
Moisture in the air at any time is known as humidity. When the air is full of water vapors we call it humid day.
3
Ans.29
(1) Hail (2) Rain (3) Snowfall.
3
Ans.30
Ozone gas.
1
LESSON-5 WATER
LEVEL-1 ANSWERS
Q.1
Define the term Terrarium.
थलशाला शब्द की व्याख्या कीजिये |
1
Q.2
Explain the term Evaporation.
वाष्पीकरण शब्द का वर्णन कीजिये |
1
Q.3
Define the Condensation.
संघनन शब्द को परिभाषित कीजिये |
1
Q.4
What is Prepetition?
वर्षण किसे कहते है ?
3
Q.5
Explain water cycle with the help of neat diagram.
जलचक्र शब्द की व्याख्या चित्र की सहायता से कीजिये |
4
Q.6
Why water is important for us?
जल हमारे लिए क्यों महत्वपूर्ण है ?
3
Q.7
Suggest some ways in which water can be conserve at school.
विद्यालय में जल संरक्षण के कुछ तरीके बताइए
3
Q.8
Suggest some ways in which water can be consumed at home.
घर में जल संरक्षण के कुछ उपायों को बताइए |
3
Q.9
Name the largest ocean.
सबसे बड़े महासागर का नाम लिखिए |
1
Q.10
Name the largest lake of the world.
विश्व की सबसे बड़ी झील का नाम लिखिए |
1
LEVEL-2 ANSWERS
Q.11
Name the largest river of the world
विश्व की सबसे बड़ी नदी का नाम लिखिए |
1
Q.12
Write the percentage of saline water in oceans.
महासागरों में खारे पानी की प्रतिशतता कितनी है ?
1
Q.13
Draw the table of distribution of water in percentage.
प्रतिशतता में जल के वितरण की एक तालिका को बनाईए |
3
Q.14
Name the three movement of oceanic water.
महासागरीय जल की तीन गतियाँ कौन-सी है?
3
Q.15
How does waves are formed?
तरंगे कैसे बनती है ?
3
Q.16
Which factor effects the movement of ocean water?
महासागरीय जल परिसंचरण को प्रभावित करने वाले कारक कौन से है?
3
Q.17
Define the term Tsunami.
सुनामी शब्द की व्याख्या कीजिये |
1
Q.18
Name two type of tides.
दो प्रकार के ज्वार-भाट्टा कौन-से है ?
1
Q.19
What do you mean by tide?
ज्वार शब्द से आप क्या समझते है ?
1
Q.20
Differentiate between high tide and neap tides.
उच्च ज्वार एवं निम्न ज्वार के मध्य अंतर स्पष्ट कीजिये |
4
LEVEL-3 ANSWERS
Q.21
Write three merits of high tides.
उच्च ज्वार के तीन लाभ लिखिए |
3
Q.22
What are tides and how are they caused?
ज्वार क्या होते है एवं उनके उत्पन्न होने के क्या कारण है?
3
Q.23
What are ocean currents?
महासागरीय धाराएं क्या है?
1
Q.24
Why do we face water scarcity?
हम पानी के आभाव को क्यों मह्सुश कर रहे है ?
3
Q.25
Differentiate between Cold current and warm current.
ठंडी धाराओं एवं गर्म धाराओं के मध्य अंतर स्पष्ट कीजिये |
3
Q.26
Why ocean water is saline?
समुद्री जल नमकीन क्यों होता है?
3
Q.27
Why the quality of water is deterioting?
जल की गुणवक्ता का ह्रास क्यों हो रहा है ?
4
Q.28
Match the following:-
निम्न जोड़ों को मिलाये:-
A
Caspian sea
केस्पियन सागर
i
Periodic rise and fall of water
जल में आवधिक उतार एवं चढाव
B
Tide
ज्वार भाट्टा
ii
Largest lake
विशालतम झील
C
Tsunami
सुनामी
Iii
Streams of water moving along definite path
निश्चित मार्ग में भने वाली जल धाराएं
D
Ocean current
महासागरीय धाराएं
iv
Strong seismic waves.
तीर्व भूकंपीय तरंगे
4
Q.29
On the given outline map of the world mark and label the following:-
Mediterian sea, Dead sea, Arabian sea, Indian ocean, Caspian lake, Victorial lake.
Rivers:-Nile, Ganga, Amazon.
भारत के दिए गए रखिये मानचित्र में निम्न स्थानों को दर्शाए :-
भूमध्य सागर, मृत सागर, अरब सागर, हिन्द महा सागर, केस्पियन झील, विक्ट्रोरिया झील |
नदियाँ:- नील, गंगा, अमेज़न |
10
LESSON-5 WATER
LEVEL-1 ANSWERS
Ans.1
A Terrarium is an artificial enclosure used for keeping small house plants. Our earth is like Terrarium.
1
Ans.2
Process through which water turns into vapors is called Evaporation.
1
Ans.3
Process in which water vapors turns into water droplets is called Contestation.
1
Ans.4
Precipitation is the fall of moisture on the ground in the form of rainfall, snow hails.
3
Ans.5
The circulation of water through atmosphere, lithosphere, hydrosphere and atmosphere is called a water cycle.
4
Ans.6
Water is necessary for survival, irrigation use in industries etc.
3
Ans.7
Control over wastage of water, rainwater harvesting, proper and planned use of the water.
3
Ans.8
Control over wastage of water, rainwater harvesting, proper and planned use of the water.
3
Ans.9
Pacific ocean.
1
Ans.10
Caspian lake.
1
LEVEL-2 ANSWERS
Ans.11
Nile river.
1
Ans.12
97%.
1
Ans.13
3
Ans.14
Waves, tides, currents.
3
Ans.15
Rise and fall of ocean water alternately at its place is called waves.
3
Ans.16
Waves, tides, and currents.
3
Ans.17
Tsunami is the Japanese word which means harbor waves.
1
Ans.18
High tide and neap tide.
1
Ans.19
Rise and fall of ocean water twice a day due to the gravitational pull of the sun and moon is known as the tide.
1
Ans.20
High tide
Neap tides
High tides occur twice in a month.
Neap tides are of the lowest height.
This happens because of combined pull of the sun and the moon.
The gravitational pull is minimum when the moon and the sun are at right angle.
4
LEVEL-3 ANSWERS
Ans.21
High tides help in fishing.
This helps the ships to arrive the harbor more easily.
Help in navigation.
3
Ans.22
Tides are the redamic rise and fall of ocean water twice a day. Rise and fall of ocean water twice a day due to the gravitational pull of the sun and moon.
3
Ans.23
Streams of water flowing constantly on the surface of ocean in definite direction are called a ocean currents.
1
Ans.24
Over use and wastage of water.
Unequal distribution of water.
Unequal distribution of rainfall.
3
Ans.25
Cold current
Warm current
A cold current flow from high latitude to low latitude.
Warm currents flows from the low latitude to high latitude.
Cold currents tend to make the place colder.
Warm current rises the temperature of nearby areas.
3
Ans.26
Ocean water is saline due to the dissolvance of large amount of salt in it.
3
Ans.27
Due to water pollution,
Mixture of Industrial wastages,
Urbanization.
3
Ans.28
A
Caspian sea
केस्पियन सागर
i
Largest lake
विशालतम झील
B
Tide
ज्वार भाट्टा
ii
Periodic rise and fall of water
जल में आवधिक उतार एवं चढाव
C
Tsunami
सुनामी
Iii
Strong seismic waves.
तीर्व भूकंपीय तरंगे
D
Ocean current
महासागरीय धाराएं
iv
Streams of water moving along definite path
निश्चित मार्ग में भने वाली जल धाराएं
4
Q.29
On the given outline map of the world mark and label the following:-
Mediterian sea, Dead sea, Arabian sea, Indian ocean, Caspian lake, Victorial lake.
Rivers:- Nile, Ganga, Amazon.
भारत के दिए गए रखिये मानचित्र में निम्न स्थानों को दर्शाए :-
भूमध्य सागर, मृत सागर, अरब सागर, हिन्द महा सागर, केस्पियन झील, विक्ट्रोरिया झील |नदियाँ:- नील, गंगा, अमेज़न |
10