I. Copy down new words in page number 52 under the heading define the following. 

II. Answer the following. 

1. What is a mountain range? Give an example. 

Ans. A chain of mountains which are formed together is known as mountain range. Eg – The Himalayas.

2. How rivers are formed?

Ans. Rivers are formed when water flows continuously from high land to low land.

3. What is a plain ?

Ans. A stretch of low , flat land or almost flat land is called a plain. 

4. How is a plain formed ?

Ans. A plain is formed when rivers bring down mud and soil from the mountains. 

5. What is a desert ?

Ans. A desert is a dry land which receives little or no rainfall every year. 

6. What is the difference between hotand cold deserts ? Give an example each.

Ans. Hot deserts are sandy,windy,hot and very dry.Eg – Sahara desert.

Cold deserts are large areas of frozen land.  Eg – Antarctica. 

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