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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
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:
Crater and Caldera
Answer the following:
Hot springs are common in volcanic regions.
Give reasons for the following:
Earth as a whole does not expand.
Name one useful feature of vulcanicity other than soil fertility.
Give one word for the following :
The region where there are highest number of geysers and hot springs.
Distinguish between the following pairs of terms associated with vulcanicity:
Magma and Lava
Assertion (A): The Pacific Ocean includes two thirds of the world’s volcanoes.
Reason (R): The boundary along the Eastern and Western coast areas of the Pacific Ocean is known as the Pacific Ring of Fire.
How many major zones of volcanic activities in the world?
Choose the odd one
Vesuvius, Stromboli, St.Helena, Etna.
