Sketch and plan of maps.

welcome to the video. In the previous chapter, we have learned about various symbols used in maps. It is difficult to draw on a map the actual shape and size of any feature like buildings, roads, and bridges, so these are represented by using certain letters, shades, colors, and pictures. The use of these symbols provides a lot of information in a limited space.

Now, what are the sketch and plans of a map? A sketch is a rough drawing of only small areas. It is a simplified illustration of an area which represents only the position of some features. It is based on spot observation and not to scale. A plan is a dimensional representation of a place, structure, location, etc., which also shows various detailed information.

A drawing that is mainly built on memory and on-spot observation and not to scale is known as a sketch. When we need a rough drawing of an area to locate a particular place with respect to other places, then we use a sketch of a map. A sketch of a map lowers down the irrelevant details and increases major geographic points. It shows things that are sometimes hidden in maps.

Well, we can take an example. Let us suppose that we want to go to a market near one of our friend's houses, but we do not know the way to the market. Our friend may draw a rough drawing to show the way to the market. Such a rough drawing is drawn without scale, so it is known as a sketch map.

Learners, you may now think, what are the features of a sketch map? No, don't worry. I'll tell you. The feature of a sketch map is that it usually represents the main features of an area and it doesn't show unnecessary details. It is a simplified illustration of an area. Well, a sketch map is usually drawn by hand and shows only a few details. The difference between a sketch and a map is that a map of a smaller or bigger place can be drawn on paper, while a sketch of only small areas can be drawn.

The drawing of a small area on a large scale is known as a plan. A large-scale map provides a lot of information. Learners, can you now think of what certain other things are located on a map? I'll tell you. Well, there are certain things which we may sometimes want to know, like the length and breadth of a road, which cannot be represented on a map. At that time, we can indicate drawings drawn to scale called plans.

Plans are a set of two-dimensional drawings used to describe a place or an object. It generally shows the layout of buildings, parks, hospitals, roads, etc. Well, plans are accurate drawings that are made to scale and show correct directions. It can show the length and breadth as well.

Finally, we can say that a map is a detailed drawing of the whole or a part of it, whereas a plan is a detailed drawing of small areas. Thus, we can say that a map is drawn to scale while a sketch is a rough drawing.

Now it is time to explore. Can you think of what mistake students can make while distinguishing between a sketch and a map? In this video, we have learned about the sketch and plan of maps. In the next video, we will learn about geographical features. I'll take your leave till then. Bye, stay happy!

Scales, in terms of mapping, are normally only relevant on printed maps. However, several of our products are named using scale numbers like 1:250,000 and 1:25,000. These are scales of map data, and you may also come across terms such as small scale and large scale. What do these mean?

With numbered scales, the larger the number on the right, the smaller things will appear on the map. For example, the most detailed product the Ordnance Survey produces is captured at a 1:1,250 scale, where features appear larger, and the least detailed products will be those at a 1:1,000,000 scale, where features appear smaller. As you can see, the scale with the largest number is the least detailed, and vice versa.

Using these two products, we can also look at the phrases "large scale" and "small scale." In large scale data, features on the map appear quite large; for example, you can see individual buildings and pavements, and so on. In small scale data, features appear quite small, so the entire town of Helensburgh is represented by a dot.

One way to show the difference that scale makes is to compare a series of products at different scales. Each image shows what 1 centimeter on the map represents in the real world. So, a 1:2,000,000 scale shows kilometers, a 1:50,000 scale shows kilometers, a 1:25,000 scale shows kilometers, a 1:10,000 scale shows meters, and a 1:1,250 scale shows meters. This also highlights that these products should be used for different purposes. So, if you want to produce an overview map of a county, you need to use smaller scale data. However, a map of a housing estate would be better with large-scale mapping, where features such as houses or roads can be seen clearly.

Explain the major components of maps.

Ans. There are three Components of Maps – distance, direction and symbol.

Distance – Maps are drawn to reduced scales. But this reduction is done very carefully so that the distance between the places is real. Therefore, a scale is chosen for this purpose. When large areas like continents or countries are to be shown on a paper, then we use a small scale. When a small area like village or town is to be shown on paper, then we use a large scale.

Direction - Most maps contain an arrow marked with the letter ‘N’ at the upper right hand corner. This arrow shows the north direction. It is called the north line. When we know the north, we can find out other directions, for example east, west and south.

Symbols - It is not possible to draw on a map the actual shape and size of different features such as buildings, roads, bridges, trees, railway lines or a well. So, they are shown by using certain letters, shades, colours, pictures and lines. These symbols give a lot of information in a limited space. With the use of these symbols, maps can be drawn easily and are simple to read.

Explain the major components of maps.

Ans. There are three Components of Maps – distance, direction and symbol.

Distance – Maps are drawn to reduced scales. But this reduction is done very carefully so that the distance between the places is real. Therefore, a scale is chosen for this purpose. When large areas like continents or countries are to be shown on a paper, then we use a small scale. When a small area like village or town is to be shown on paper, then we use a large scale.

Direction - Most maps contain an arrow marked with the letter ‘N’ at the upper right hand corner. This arrow shows the north direction. It is called the north line. When we know the north, we can find out other directions, for example east, west and south.

Symbols - It is not possible to draw on a map the actual shape and size of different features such as buildings, roads, bridges, trees, railway lines or a well. So, they are shown by using certain letters, shades, colours, pictures and lines. These symbols give a lot of information in a limited space. With the use of these symbols, maps can be drawn easily and are simple to read.

What are the three main components of maps?

Ans. There are three Components of Maps – distance, direction and symbol.

Distance – Maps are drawn to reduced scales. But this reduction is done very carefully so that the distance between the places is real. Therefore, a scale is chosen for this purpose. When large areas like continents or countries are to be shown on a paper, then we use a small scale. When a small area like village or town is to be shown on paper, then we use a large scale.

Direction - Most maps contain an arrow marked with the letter ‘N’ at the upper right hand corner. This arrow shows the north direction. It is called the north line. When we know the north, we can find out other directions, for example east, west and south.

Symbols - It is not possible to draw on a map the actual shape and size of different features such as buildings, roads, bridges, trees, railway lines or a well. So, they are shown by using certain letters, shades, colours, pictures and lines. These symbols give a lot of information in a limited space. With the use of these symbols, maps can be drawn easily and are simple to read.