Voyage Solutions for ICSE Class 7 Geography Chapter 1 Topographical Sheets Colours Signs And Symbols

THINK AND ANSWER

Question: If maps were only black and white, will they be difficult to read ?
Answer: If the maps were only black and white it would be difficult to understand as we would be unable to know the natural and man-made features of the region e.g. the rivers, roads, railways, sand dunes, jungles, etc.
Colors provide a visual code that our brains can process much faster than plain text labels. They allow us to instantly distinguish between a blue river and a brown contour line without getting confused.
Teacher's Tip: Think of colors as a map's "secret language" that tells you what things are at a single glance.
Exam Tip: Always mention specific examples like "blue for water" or "green for vegetation" when explaining the importance of color.

VALUES AND LIFE SKILLS

Question: Using colours and symbols is an intelligent way of providing information. It helps cartographers to make beautiful and easy-to-read maps. Can you think of a situation where you can use this method in your day-to-day life ?
Answer: Yes, we use different colours and symbols while preparing notes. We use green or black colour pen for writing questions and blue colour pen for writing answers. We also use symbols like Q. for questions and Ans. for Answers.
You could also use different colored folders to organize your school subjects, such as red for Math and yellow for Science. Symbols like stars or hearts can be used in your planner to mark important deadlines or birthdays.
Teacher's Tip: Color-coding your closet or bookshelf can make finding your favorite items much easier and faster.
Exam Tip: This question tests your creative thinking; providing multiple diverse examples shows higher-level application skills.

EXERCISES

A. Fill in the blanks
1. Mountains, hills, rivers, etc. are natural features shown on a map.
2. Roads, rail tracks, wells, etc. are man-made features on a map.
3. Contour lines on a map join points of equal height on the surface or the earth above or below a reference point.
4. The colour white is used to show barren land on topographical sheets.
5. The colour yellow is used to show cultivated land on topographical sheets.
Natural features are those made by nature, while man-made features are built by humans. Colors on topo sheets are standardized globally so that anyone from any country can read them easily.
Teacher's Tip: Use "N" for Nature and "M" for Men to distinguish between the two types of features.
Exam Tip: Ensure you underline the blank word when writing your final answer in the exam paper.

B. Match the following
A --- B
1. Camping Ground --- (iv) CG
2. Seasonal streams --- (iii) Wavy blue lines
3. Palms --- (ii) Symbols of palm trees
4. River --- (v) Solid blue line with arrow
5. Footpath --- (i) Dotted black line
Answer:
1. Camping Ground - (iv) CG
2. Seasonal streams - (iii) Wavy blue lines
3. Palms - (ii) Symbols of palm trees
4. River - (v) Solid blue line with arrow
5. Footpath - (i) Dotted black line
Learning these symbols is like learning the alphabet for geography students. Once you know what "CG" stands for, you can locate camping grounds anywhere on a topo sheet.
Teacher's Tip: "CG" is an abbreviation for Camping Ground; most abbreviations on maps are very logical!
Exam Tip: Draw the symbol next to the word in your notebook to memorize it more effectively for the test.

C. Write True or False. Correct the false statements.

Question 1: The distance between the two tracks in broad gauge is 1 m.
Answer: False.
Correct : The distance between the two tracks in broad gauge is 1.67 m.
Railways use different gauges to suit the terrain and speed requirements. The broad gauge is the standard for main line trains in India.

Question 2: A metalled road is shown by two blue lines.
Answer: False.
Correct : A metalled road is shown by two Red parallel lines.
Red is the standard color for all types of roads and settlements on a topographical map. Blue is strictly reserved for water-related features.

Question 3: Settlements can either be temporary or permanent.
Answer: True.
Nomadic people often build temporary homes that they can move easily. Permanent settlements are built by people who intend to stay in one location for a long time.

Question 4: In permanent settlements, houses are build for a short period of time.
Answer: False.
Correct : In permanent settlements, houses are build for a long period of time.
Permanent houses are usually made of strong materials like brick, cement, and stone. They are designed to withstand weather and last for many years.

Question 5: Terrace farming is undertaken on hilly slopes.
Answer: True.
Terraces look like giant steps cut into the mountain to create flat land for growing crops. This method also helps prevent soil erosion by slowing down the flow of rainwater.

Question 6: Land use refers to the way a piece of land is used in the area.
Answer: True.
Land use can include farming, building factories, making parks, or leaving areas as forests. It tells geographers how humans are interacting with the environment in that specific region.
Teacher's Tip: Broad gauge is wider than a meter; remember the number $1.67$ for full marks.
Exam Tip: For false statements, always provide the "Correct" version to demonstrate complete knowledge to the examiner.

D. Answer the following questions briefly.

Question 1: What are topographical maps ?
Answer: Topographical maps are large-scale maps that show both natural features such as mountains, hills, rivers, lakes, plateaus, cliffs, etc., and man-made features such as settlements, roads, railway tracks, wells, and embankments.
These maps provide a very detailed view of a small area, showing both the height of the land and human structures. They are essential tools for engineers, hikers, and the military.

Question 2: What is a contour line ?
Answer: A contour line is an imaginary line on a map connecting points at the same height above sea level.
If you were to walk along a contour line in real life, you would never go up or down a hill; you would stay at the exact same elevation. These lines help represent three-dimensional mountains on a flat piece of paper.

Question 3: Explain why colours are used in topographical maps.
Answer: The colours are used to represent certain physical, economic and cultural features. In the absence of colour it would become impossible to interpret the map so colour are integeral part of topographical maps.
Colors act as a shorthand that saves space on the map so that thousands of labels aren't needed. For example, seeing a green patch immediately tells you there is a forest there without having to write the word "forest."

Question 4: Name the features shown in blue, green and brown colours on a map.
Answer: Blue colour depicts all perennial water bodies like rivers, wells, tanks, ponds, lakes, seas, etc.
Green shows all forests and jungle areas including woodlands are shown in green.
All contour lines are brown in colour. The figures denoting the height of the contour line are also in the some colour as the contour lines, eg. Sand hills, sand dunes etc. And shifting sands are also indicated by brown colour.
Using standardized colors like brown for contours and blue for water makes maps easy to read for everyone. Even without knowing the local language, you can understand the geography of the area through these colors.

Question 5: How would you recognize a metalled road and an unmetalled one on a topographical map ?
Answer: A metalled road means a tarred road. It is shown by two red parallel lines. A metalled road indicates that the region is developed.
Unmetalled roads (or Kutcha roads) are shown by a set of ! broken parallel lines in red on the map. They indicate that the area is underdeveloped.
Road symbols help geographers understand how easy it is to travel or transport goods in a region. A dense network of solid red lines usually indicates a wealthy, urbanized area.

Question 6: What do you understand by settlements ?
Answer: Settlements are groups of houses, usually in villages or towns, where people live. The size of settlements depends on the availability of roads, railways, hospitals, police stations, administrative buildings, rest houses and so on. Settlements grow over a period of time. The location and type of settlements are determined by various factors such as the terrain, presence of water, suitable climate, presence of employment opportunities, etc.
Settlements are the most important man-made features on a map because they show where human life is centered. They usually develop in places where it is easy to find food, water, and work.

Question 7: Distinguish between a temporary settlement and a permanent settlement.
Answer: Temporary Settlement
1. These settlements are built and occupied for a short period of time.
2. People practice hunting, gathering, shifting, cultivation.
3. Due to climatic conditions or circumstances, people need to change their homes.
Permanent Settlement
1. These settlements have permanent houses.
2. People practice manufacture, trading and other services.
3. People build permanent house.
Permanent settlements are the hallmark of modern civilization where people stay in one place to build stable communities. Temporary settlements are still found in remote areas where people follow the seasonal movements of animals or crops.
Teacher's Tip: Think of contour lines like "height circles"—the closer they are, the steeper the hill!
Exam Tip: When asked about colors, always link the color to its specific feature, such as blue to perennial water.

E. Answer the following questions in one or two paragraphs.

Question 1: How can the occupation of people be inferred directly from a topographical sheet ?
Answer: OCCUPATIONS - Occupations of people can be inferred directly from a topographical map. The type of settlements in the region as well as the way in which the local people use the land can give you an idea in this regard. Some of the common ways by which the local inhabitants use the land are:
1. Agriculture: If large tracts of land indicate cultivation of crops then most of the people are farmers or cultivators.
2. Mining : If there are indications of mines and quarries (especially marble and stone quarries) then mining or working in quarries can be inferred as the main occupation.
3. Fishing: If a settlement is near a large river or the sea coast, fishing will obviously be the main occupation of the inhabitants.
4. Manufacturing: Large settlements such as towns will indicate the presence of factories and hence manufacturing will be the main occupation.
5. Trading: A large settlement with many cart tracks, roads and railway lines converging will indicate that the town is a market town with access to trade and commerce.
Maps tell us how people make a living by showing what resources are available nearby. If we see many "quarry" symbols, we know people there likely work in mining stones or minerals.

Question 2: How can topographical maps help us to know about the transport and communication of an area ?
Answer: TRANSPORTAND COMMUNICATION - When we look at a topographical map we will notice many different red lines of varying width running all across it There are also some black lines that go across the map. These lines are symbols of roadways and railway tracks. These lines indicate the type of communication present in the area. They also reflect file various modes of transport that are being used in the area.
Transport networks show how connected a place is to the rest of the world. Thick red lines indicate major highways for fast travel, while thin dotted lines show footpaths used in more remote or rural areas.

Question 3: How does relief of an area affect land use ?
Answer: Land use refers to the way a piece of land is used in the area. The relief of the land determines the type of activity that takes place on the land. In highlands, such as hills, mountains and plateaus, where the slope of the land is generally steep, the land is used for grazing sheep and goats.
Most of the land is covered by forests which facilitates economic activities such as forest harvesting and lumbering. Terrace farming is also undertaken on hilly slopes to grow crop such as rice, barley and tea. Various agricultural activities take place on lowlands since cultivation of crops is easier on a flat surface than on a sloping surface.
In highlands, the steep terrain makes building roads difficult, so people often rely on smaller paths. Lowlands are the heart of human activity because they provide easy transport and fertile soil for food production.
Teacher's Tip: "Relief" is just a fancy geography word for the "shape of the land" (high or low).
Exam Tip: Structure your long answers with numbered points to make them easier for the teacher to grade.

F. Draw a sketch map of your neighbourhood using different colours for different areas, for example, red for residential areas, green for parks and playgrounds, and yellow for commercial areas. Use symbols to mark out roads and special places like temples, post offices, old monuments, or railway stations. Make a proper key for it.
Answer: (Students should refer to the diagram on page 6 of the PDF which shows a sample sketch map with symbols for PO, Well, Mall, Dispensary, etc.)
Creating a sketch map helps you observe details about your surroundings that you might usually overlook. It acts as a simplified representation of real-world distances and landmarks.
Teacher's Tip: Use a ruler for roads and simple icons like a small box for houses to keep your sketch neat.
Exam Tip: Every map must have a "Key" or "Legend" to explain what the colors and symbols mean.

G. Picture study
Look at the symbols given here and answer the questions that follow.
1. [Solid Black Square] --- 2. [Outline Square]
Question 1: What does symbols 1 and 2 show?
Answer:
Symbol 1 shows a Permanent Hut.
Symbol 2 shows a Temporary Hut.

Question 2: How do the features shown by these two symbols differ?
Answer: Temporary huts that could be pulled down at any time in the foreseeable future. Permanent huts will not be taken down in the foreseeable future and has been built on a permanent basis.
A solid black box represents a permanent structure, while an outline indicates it is temporary. This distinction helps geographers understand the population stability of a region.
Teacher's Tip: "Filled-in" means it's solid and permanent; "Empty" means it can be moved.
Exam Tip: Draw the symbols clearly if asked to reproduce them in an exam.

LET'S DO SOMETHING

Form a group in your class and obtain a topo sheet from the Geography Department of your school. Look at it carefully and identify the following features:
1. settlements
2. railway lines
3. agricultural fields
4. roads
Answer: Do it Yourself.
Working with actual topo sheets is the best way to practice your map-reading skills in a group. It allows you to collaborate with classmates to solve geographical puzzles together.
Teacher's Tip: Topo sheets are usually huge; lay them out on a large table so everyone in the group can see.
Exam Tip: Focus on recognizing "settlements" (red blocks) and "roads" (red lines) as they are the easiest features to find first.