Students who are looking for DAV Books Solutions you are in right place, we have discussed the solution of Science class 6 book Chapter 2 Representation of the Earth which is followed in all DAV School Solutions are given below with proper Explanation please bookmark our website for further updates!! All the Best !!
Class- 8 DAV Social Science Representation of the Earth Question and Answer
A. Tick the correct Option:
1. Which one of the following is a representation of the earth drawn on a flat surface?
Ans: Map
2. Which one of the following symbols represents a bridge?
Ans: |==============|
3. A compass is mainly used to-
Ans: Show the directions.
4. Large scale maps are used for-
Ans: Small areas
5. Which type of map represents relief features like mountains, plateaus, plains and deserts?
Ans: A physical map
B.Fill in the blanks
1. A globe represents the three-dimensional view of the earth.
2. The technique or skill of making maps is called cartography .
3. Sketch is a drawing of a small area drawn from one’s observation and memory without directions.
4. A compass is a device consisting of a magnetic needle, which always points towards north.
5. Snow capped area are shown by using white colour on maps.
C. Read the statements given below and write an appropriate term for each.
Ans:
| 1. The most perfect approximation of the earth. | Globe |
| 2. The device that helps the mariners to sail in the desired direction. | Plan |
| 3. The experts of map-making. | Cartographers |
| 4. Maps showing distribution of rainfall, population, etc. | Thematic map |
| 5. A collection of maps of the world, continents and selected countries in a bound form. | Atlas |
D. Answer the following questions in brief.
1. What are the limitations of a globe?
Ans:
The main limitations of a globe are as follows:
- It is difficult to carry.
- The space on it is limited and large-scale details cannot be shown on it.
- It cannot be made for a part of the Earth.
- Details of geographic features cannot be properly shown on it.
2. Mention the advantages of a map.
Ans: The advantages of a map are:
- Maps requires very less space therefore it is easier to use and easier to carry around.
- They can show the earth’s entire surface or just a small part and can show even a small locality in great detail.
3. What is a thematic map?
Ans: A thematic map is a type of map that portrays the geographic pattern of a particular subject matter (theme) in a geographic area.Ex: Map of the average distribution of rainfall, distribution of crops, minerals, population, lines of transport, etc.
4. Name the cardinal points along with intermediate directions.
Ans: Cardinal points along with intermediate directions are:
| Cardinal points | Intermediate directions |
| North | North-West |
| South | South-West |
| East | North-East |
| West | South-East |
5. How do conventional symbols help in reading maps?
Ans: Conventional symbols help in reading maps because, with the help of these symbols, we can read a map made in any country without knowing the languages of that country.
E. Answer the following questions.
E. Answer the following questions.
1. Why is a globe considered a perfect representation of the earth? Give any three reasons.
Ans: Globe is considered a perfect representation of the earth because-
- It represents the 3-dimensional view of the earth.
- It shows the shape of the oceans and the continents correctly.
- It also shows their correct relation to one another as they are on the earth
- A globe gives us a better idea of parallels (latitudes) and meridians (longitudes).
- Only a globe gives us an idea about the tilt of the earth’s axis.
2 What is a scale? Why is it an important component of a map?
Ans: The scale of a map is the ratio of a distance on the map to the corresponding distance on the ground. It is an important component of a map as it helps to measure distance.
3. Distinguish between a physical map and a political map.
Ans:
| PHYSICAL MAP | POLITICAL MAP |
|---|---|
| They represent physical or relief features of a place. | They represent the political boundaries of a village, city, state, country and continent. |
| Raised or dipped | Flat |
| Dull colours are used. | Bright colours are used. |
| Mountains, plateaus, plains, rivers, lakes, etc are displayed. | Countries, States are displayed. |
4. If you are lost in a jungle, how can a topographic map help you to come out of the jungle?
Ans: Topographic maps represent the small areas on large scale. They represent details with the help of contours and symbols. For example, the scale may be 1 cm = 1 km. It means one centimetre on a map is representing corresponding one kilometre of the ground.
5. Highlight the significance of a common colour scheme in the maps. Give examples to support your answer.
ANS: Blue colour is used for showing water bodies, like oceans, seas, etc. Low lands and plains are represented by green colour. Higher parts, like plateaus and hills, are shown by yellow and orange colours, while brown colour is used for showing mountain Snow-capped areas are shown by using white colour. This scheme of colours for showing relief features on maps is the same throughout the world.
6. Describe the history of map-making.
Ans: • The earliest map was made in 2300 BC in Mesopotamia (Iraq). It was made on a clay tablet. But the maps of that period were not very clear.
• Different techniques of map-making were adopted in different parts of the world. Eskimos made maps by sewing animal skins of different colours. The Egyptians engraved the boundaries and features on metal plates.
• Ptolemy, an Egyptian, was the first cartographer, who made the map of the world according to scale and direction. He was the first person to represent the earth as a sphere. He was known as the ‘Father of map-making.