Question

Е. Answer the following questions : 1. How was it proved that the Earth is spherical in shape? 2. How is globe useful to us? 3. How do maps help us? Why is a map less accurate than a globe? What are the features that help us to read a map? 4. ​

Answer 1

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Answer 2

Answer:

1. The Earth is spherical in shape can be proved by :-

a. Sunrise and Sunset : The fact that the time of sunrise varies from place to place on the Earth proves that the Earth is not a flat disc. If the Earth was a flat disc, all the places on the Earth would have sunrise and sunset at the same time.

b. Sighting of a ship : As one observes a ship coming towards a port, the smoke is first noted. Later the funnel and the mast of the sip are seen and finally the hull of the ship comes into view. This shows that the sea level has a curved surface. If the Earth were a flat disc, the entire ship would be seen from a distance.

c. The Spherical Horizon :- the limit of the horizon at a place is circular and the horizon widens as the height of the observer increases. This again shows that the Earth is spherical in shape.

2. It assists in the search for various nations and oceans. The spread of water and land on the earth's surface is illustrated by the globe. It shows the right shape, location and size of the earth's continents and oceans.

3. Maps use symbols like lines and different colours to show features such as rivers, roads, cities or mountains. All these symbols help us to visualise what things on the ground actually look like. Maps also help us to know distances so that we know how far away one thing is from another.

                   Maps are less accurate than globe because map is a flat presentation of our earth but globe is the spherical presentation of the earth and globe are more accurate than maps because globe is a model of earth and we can imagine how our earth looks like by the globe. So these are more accurate and maps are less accurate.

                                               The scale, symbol, and direction are important tools that help you to read the map conveniently. The map is used for showing as well as recording the information such as relief features, social feature, political boundaries and others.

I hope that you have understood my explanation.

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