Regions of Earth

Which are the constituents in the air?

What do you mean by poles of the Earth?

Air contains $78$ percent oxygen and $21$ percent nitrogen.

The main gases present in air are oxygen and carbon dioxide. 

Name the following with the word beginning with the letter N.

I am the main gas in the atmosphere. Who am I? 

Name the following.

The gases which are present in air _____.

There is _____ percentage of Nitrogen in air. 

Oxygen and nitrogen are the two gases which make 50% of air.

Name the gases present in air.

Look at the following picture and name it.
               

What is a globe?

A model of the earth is called a _____.

Differentiate between an island and a peninsula. Give examples. 
 

Is India an island or a peninsula? Why? 

Which seas lie adjacent to India? 
 

What are the advantages of seas?

Fill in the blank with the correct answer.

A _____ is a model of the earth. (Hint: Unscramble the word to get the answer: OLEBG)

What is air made up of?

Write the two uses of the globe.

What is a globe?