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प्रश्न
Distinguish between the following pairs of terms associated with vulcanicity:
Magma and Lava
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उत्तर
Magma and Lava :
Magma :
- Magma is hot sticky molten material.
- It contains solutions to water and gases.
- It comes out during volcanic eruptions.
Lava :
- Lava is solidified magma.
- Gases and water disappear after evaporataion.
- It cools down as it comes into contact with the atmosphere.
संबंधित प्रश्न
What do you understand by ‘Vulcanism’?
Distinguish between the following pair of terms associated with vulcanicity:
Lava and Magma
Distinguish between the following pair of terms associated with vulcanicity:
Acidic Lava and Basic Lava
Distinguish between the following pair of terms associated with vulcanicity:
Cinder Cone and Composite Cone
Distinguish between the following pair of terms associated with vulcanicity:
Laccolith and Lapolith
Match the items given in Column A with the correct ones in Column B.
| Column A | Column B |
| 1. A Rift valley lake | (a) Deccan Trap region of India |
| 2. A horst | (b) Fujiyama |
| 3. A basic lava sheet | (c) Tanganyika |
| 4. Composite cones | (d) Black forest plateau |
| 5. An active volcano | (e) Corndon Hill |
| 6. A Batholith | (f) The Alps |
| 7. A Phaccolith | (g) Upland of Britain is France |
| 8. A young Fold mountain | (h) Stromboli |
Answer the following:
Some volcanoes erupt explosively.
Give reasons for the following:
Earth’s movements have modified the Earth’s surface.
Name one useful feature of vulcanicity other than soil fertility.
Explain three major zones of volcanic activities in the world.
