Samacheer Kalvi 7th Social Science Term 3 Geography Solutions Chapter 2 Pdf

Samacheer Kalvi 7th Social Science Term 3 Geography Solutions Chapter 2 Pdf

Tamilnadu Board Samacheer Kalvi 7th Social Science Term 3 Geography Solutions Chapter 2: Tamilnadu State Board Solution Class 7 Social Science Term 3 Geography Chapter 2 – Map reading.

Samacheer Kalvi 7th Social Science Term 3 Geography Solution

 Samacheer Kalvi 7th Social Science Geography Solutions Chapter 2: Overview

Board

Samacheer Kalvi
Class

7

Subject

Social Science Geography
Term

3

Chapter Name

Map reading

 

Unit 2: Map reading

 

Multiple choice questions: (marks:1)

1.)  A collection of maps in a book is called:

A.) Atlas

B.) Wall maps

C.) Physical maps

Ans: atlas 

 

2.) The map that shows natural features are called:

A.) Geological map

B.) Physical map

C.) Cadastral map

Ans: physical map.

 

3.) The map that shows topographical features are called:

A.) Physical map

B.) Cadastral map

C.) Relief map

Ans: relief map.

 

Answer the following questions: (Marks:1)

 

1.) What is a map?

Ans: Map is a representation of the earth as a whole or a part of the earth drawn on a flat  surface according to a given scale.

 

2.) What is a scale?

Ans: A scale is a ratio between the actual distance of two points on the Earth and the distance on a map.

 

3.) What is called as cartography?

Ans: The science of map-making is called cartography. Carte means ‘map’ and graphic  means ‘drawing’.

 

4.) One who draws maps is called a…………

Ans: cartographer.

 

5.) What is known as digital maps ?

Ans: Digital maps is a web-based service that provides detailed information about geographical regions and sites around the world.

 

6.) What is the title of the map?

Ans: Every map has a title that describes the information given in the map. For example, a  map with the title India Rivers shows Rivers of India.

 

7.) What is cardinal directions?

Ans: East, West, North and South are called cardinal direction.

 

8.) What do you mean by legend or key of the map?

Ans: legend is a representation of different geographical features by using different colours and symbols.

 

9.) What is called as conventional sign and symbols?

Ans: The common signs and symbols which are internationally accepted and used in maps are called conventional signs and symbols.

 

10.) What is the full form of SOI?

Ans:  The Survey of India.

 

Answer the following questions: (marks:2/3)

 

1.) What are the colours used in a map and write about what they describes.

Ans: Various colours are used in a map. They are:

  • White describes Snow
  • Yellow – Agriculture
  • Green – Forest
  • Blue – Water bodies (oceans, seas and rivers)
  • Brown – Mountain, Hill and Contour
  • Red – Settlements, Road
  • Black – Railway line

 

2.) What is map? What are the uses of a map? (1+2)

Ans: Map is a representation of the earth as a whole or a part of the earth drawn on a flat  surface according to a given scale.uses:

  • Maps enable us to know details of the landforms.
  • Maps help the military personnel to campaigns.
  • It is used in the aero planes and ships.
  • Maps are used for weather forecasting.

 

3.) Write down the differences between a map and a globe 

Ans:

 

Answer the following questions: 

 

1.) Briefly discuss about the types of the map. (5)

Ans: Map is a representation of the earth as a whole or a part of the earth drawn on a flat  surface according to a given scale. There are various types of maps present:

Maps on the basis of scale:

  • Large scale maps: large scale maps show small areas in greater details because they are drawn on a relatively large scale.

Cadastral maps : These maps are village and town maps which show individual fields and house sites.

Topographical maps: topographical maps shows smaller areas in much greater details about small area.

Small scale maps : small scale maps show large areas like continent or countries. These maps are drawn on 1cm = 1000 kms. These are called small-scale maps.

~ Wall maps: wall maps are small-scale maps showing large areas. They are useful for students in classrooms and offices, small scale maps covers a larger area and depicts with limited information.

~ Atlas: atlas  is a collection of maps in a book.

Atlas maps are small-scale maps covering large areas like continents and countries. Only prominent relief features, main roads and railways important towns are shown in Atlas maps.

Maps on the basis of content:

  • Physical maps: physical maps show natural features such as relief, geology, soils, drainage, elements weather, and vegetation.

~  Relief maps: These maps show general topography like mountains valleys, plains, plateaus and rivers.

~  Geological maps: geological maps are drawn to show geological structures, rocks and minerals.

~  Climatic maps: climatic maps show the distribution of temperature, rainfall, clouds, relative humidity, direction and velocity of winds and other elements of wweather.

~ Soil maps: soil maps  are drawn to show the distribution of different types of soil and  their properties.

  • Cultural maps: The maps that shows the man-made features are called cultural mmaps.

~ Political maps : These maps show the administrative divisions of a country, state or district.

~  Population maps: population maps show the distribution, density and growth of population, occupation structure and literacy.

~ Economic maps: economic maps depict the production and distribution of different types of crops and minerals, location of industries, trade routes and flow of commodities. ~Transportation maps: transportation maps show roads, railway lines and the location of railway station, airports and seaports, etc.,

~ Thematic maps : Thematic maps represent the distribution of a particular feature or theme and its spatial variation.

 

2.) What is Atlas? What are the types of atlas? (1+4)

Ans: Atlas is a collection of maps in a book. Atlas maps are small-scale maps covering large areas like continents and countries. Only prominent relief features, main roads and railways important towns are shown in Atlas maps.

Types of Atlas : 

  • School Atlas: school atlas contains the maps giving sufficient details of the home and country.
  • Advanced Atlas: advanced atlas contains detailed maps of even small regions of the continents and are used as reference atlases.
  • Regional Atlas: regional atlas contains detailed maps of small areas, prepared with a view to help in regional planning.
  • National Atlas: national atlas contains detailed maps of a country. The maps of a national atlas are comparatively large-sized and they depict general and characteristic features of the geography of a country.

 

3.)  What are the elements of a map?(5)

Ans: Map is a representation of the earth as a whole or a part of the earth drawn on a flat surface according to a given scale. Elements of maps: Maps provide us with a lot of information and one must know how to read and interpret them. Every map is provided with certain features that help us to study the information presented in it. The basic essential elements of a map are :

  • Title : Every map has a title that describes the information given in the map. For example, a map with the title India Rivers shows Rivers of India.
  • Direction; In general maps are drawn with North orientation. It helps us to find other directions on the map like East, West and South. In addition to the North notation, latitudes and longitudes are depicted in the margins. The North is notified by the letter ‘N’ with an arrow mark.
  • Scale: The scale of a map is the ratio between the distance on the map between two points and actual distance between the two places on the ground. For example the scales can be represented as 1cm = 10km. It means 1cm on the map is equal to 10 km on the ground. It helps to find the distance on the map between two points
  • Legend / key: A legend or key of a map explains the symbols that are used on it to represent various physical and cultural features.
  • Conventional signs and symptoms: The common signs and symbols which are internationally accepted and used in maps are called conventional signs and symbols. On a map it is difficult to show the real shape such as settlements, bridges, post offices, railway lines and forests. They are depicted by using certain colours, symbols or letters. Such as white colour represents snow, green represents forests, blue represents water bodies etc. And several symbols such as PO in the map depict the post office, PS means police station , RS means railway station etc.

 

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Updated: August 29, 2022 — 1:31 pm

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