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प्रश्न
Distinguish between the following pair of terms associated with vulcanicity:
Cinder Cone and Composite Cone
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उत्तर १
| Cinder Cone | Composite Cone |
| It is made of small pieces and fragments of solidified lava and ash. | It is made of layers of cinders and ash, alternating with layers of lava. |
उत्तर २
Cinder Cone: Volcanic cones are called Cinder cones when the material erupted consists of cinder and other solid particles. These cones have steep slopes because they consist of particles of large size.
Composite Cone: The volcanoes which start as cinder cone and grown into large volcanic hills with alternating layers of lava and ash are called Composite cones. These cones are formed due to an explosive eruption followed by eruption of lava. Explosive eruption leads to the formation of a layer of ash while lava solidifies as a sheet on the layer of ash. This is followed by a quiet period and then the process gets repeated.
संबंधित प्रश्न
What do you understand by ‘Vulcanism’?
How are volcanoes formed?
What is the following:
Caldera
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:
Fissure-type Volcanoes and Central-types Volcanoes
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 develop parasitic cones.
How the theory of plate tectonics has explained the formation of mountains like Himalaya or Alps and of the volcanic islands.
The upper part of the earth’s crust ______.
