Exercise Solutions Available
Step-by-step answers for all textbook questions in this chapter
What is a Map?
A map is a representation or drawing of the Earth's surface, or a part of it, drawn on a flat surface according to a scale. A globe is round, but a map is flat and easy to carry, fold and study.
Types of Maps
| Type of map | What it shows | Example |
|---|---|---|
| Physical map | Natural features such as mountains, rivers, plains and plateaus | A map showing the Himalayas and the Ganga |
| Political map | Boundaries of countries, states, districts and cities | A map showing the states of India |
| Thematic map | One particular topic or theme | A rainfall map, a road map, a population map |
The Three Components of a Map
Every useful map has three components:
1. Distance — shown with the help of a scale. 2. Direction — shown with the help of cardinal directions. 3. Symbols — signs and colours that stand for real features.
1. Distance (Scale)
The scale is the ratio between the distance on the map and the actual distance on the ground. Maps cannot be drawn the same size as the real place, so they are reduced using a scale.
| Way of showing scale | Example |
|---|---|
| Statement (words) | 1 cm on the map = 5 km on the ground |
| Ratio / fraction (RF) | 1 : 100000 |
| Graphical (a drawn line) | A bar line marked with distances |
2. Direction
- The four main cardinal directions are North, East, South and West.
- Between them are the four intermediate directions: North-East (NE), South-East (SE), South-West (SW) and North-West (NW).
- On most maps, North is shown at the top, with a north arrow or a compass rose.
- A compass has a magnetic needle that always points roughly north-south.
3. Symbols
It is impossible to draw every feature in its real shape, so symbols are used. Symbols are also called conventional signs because they are used in the same way everywhere.
| Colour / symbol | Stands for |
|---|---|
| Blue | Water bodies — rivers, ponds, seas |
| Green | Forests, grasslands, natural vegetation |
| Yellow | Cultivated (farming) areas / crops |
| Brown | Mountains, plateaus, highlands |
| Black / grey | Boundaries, roads, railways |
Symbols make a map language-independent — a person of any language can read it using the same signs.
Sketch and Plan
| Sketch | Plan | |
|---|---|---|
| Made from | Memory or rough observation | Careful measurement |
| Scale | No scale | Drawn to a scale |
| Use | A rough idea of a route or place | An accurate drawing of a small area (e.g. a room, a school) |
Key Vocabulary
| Term | Meaning |
|---|---|
| Map | A drawing of the Earth's surface or part of it on a flat surface |
| Scale | The ratio of map distance to actual ground distance |
| Cardinal directions | North, South, East and West |
| Physical map | A map showing natural features |
| Political map | A map showing boundaries of countries and states |
| Thematic map | A map showing one special topic |
| Sketch | A rough drawing without a scale |
| Plan | An accurate, scaled drawing of a small area |
Exam Tips
- The three components — distance, direction, symbols — is a very common short-answer question; learn them in order.
- Know which colour stands for what: blue = water, green = forests, yellow = crops, brown = highlands.
- Sketch = rough, no scale; Plan = accurate, to scale — a favourite 1-mark "difference" question.
- A compass needle points north-south; the cardinal direction at the top of a map is usually North.
- The three map types: physical (nature), political (boundaries), thematic (one theme).