| 1 |
The amount of fresh water that available to mankind is approximately to the total amount of water. |
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| 2 |
What is important in the neaural measure. |
- A. Minerals
- B. The decayed matter
- C. sand
- D. Salts
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| 3 |
The distance of earth from sun is approx |
- A. 160 million kilometer
- B. 150 million kilometer
- C. 140 million kilometer
- D. 170 million kilometer
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| 4 |
What are the main types of the soil? |
- A. Silt, Sand and rock
- B. Clay, humus and sand
- C. Sand, silt and clay
- D. silt, humus andclay
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| 5 |
Which type of soil is good for growth of plants. |
- A. Sand
- B. Silt
- C. Clay
- D. Rock
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| 6 |
Weight of the internal core of the earth is............ of the total weight of the earth. |
- A. 30%
- B. 16%
- C. 33%
- D. 34%
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| 7 |
What is therole of living organisms in the soil. |
- A. Making soild soft and airy
- B. Making soil hard
- C. Make soil unfit for cultivations
- D. Making the air dry
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| 8 |
In term of volume, largest part of the earth. |
- A. Crust
- B. Mantle
- C. Core
- D. External core
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| 9 |
The outer layer of the Earth is called. |
- A. External core
- B. Mantle
- C. Crust
- D. Inner core
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| 10 |
Which solls are found in beaches or rivers crossing. |
- A. Fertile soil
- B. Clay
- C. Slit
- D. Sand
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