1. The atmosphere is usually divided into …………….. layers.

Question

Fill in the Blanks

1. The atmosphere is usually divided into …………….. layers. 

2. The 99% of water is in the form of …………….. . 

3. The third layer …………….. is the interior of the earth. 

4. The topmost layer of the earth is …………….. . 

5. Nicolaus copernicus is a …………….. astronomer. 

6. Ptolemy is a …………….. astronomer.

7. Georges Lemaitre is a ……………..

Answer 1

1. 5

2. ice, saline water 

3. Core 

4. Crust 

5. Polish Astronomer 

6. Egyptian Astronomer 

7. Belgian