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प्रश्न
Distinguish between the following pair of terms associated with vulcanicity:
Acidic Lava and Basic Lava
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उत्तर १
| Acidic Lava | Basic Lava |
| It is rich in silica and poor in iron and magnesium. | It is poor in silica and rich in iron and magnesium. |
उत्तर २
Acidic Lava and Basic lava
Acidic Lava :
- It is a highly viscous lava.
- It is light coloured like granite.
- It has a low density.
- It has a high percentage of silica.
- It flows slowly and results in steep-sided cones or lava domes.
Basic Lava :
- It is highly fine and thin.
- It is dark coloured like Basalt.
- It has a high density.
- It is poor in silica.
- It flows rapidly as thin sheets resulting in shield cones.
संबंधित प्रश्न
What do you understand by ‘Crater of the Volcano’?
Distinguish between the following pair of terms associated with vulcanicity:
Laccolith and Lapolith
Distinguish between the following pairs of terms associated with the crustal movement of the earth:
Tilted Block mountains and Lifted Block mountains
Answer the following:
Some volcanoes erupt explosively.
Answer the following
The vent of a volcano when blocked results in an explosive eruption.
Give reasons for the following:
Earth as a whole does not expand.
Name one useful feature of vulcanicity other than soil fertility.
Out of the following words write down the four that are connected with volcanic activity.
Karst, crater, drumlin, stalactites, gully, pot holes, ash, basalt, swallow holes, dyke, domes, bluffs.
How the theory of plate tectonics has explained the formation of mountains like Himalaya or Alps and of the volcanic islands.
______ belt is known as the “Ring of Fire”.
