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प्रश्न
What do you understand by ‘Vulcanism’?
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उत्तर
The interior part of the earth is extremely hot temperatures up to 2000°C. in which every matter converts into a molten form. This molten material ‘magma’ always tries to burst out wherever it finds any crack or hole in the crust. The process of erupting out of magma is known as ‘vulcanism’.
संबंधित प्रश्न
Give an example each of conical volcano and fissure volcano.
What is the following:
Spine or plug
Distinguish between the following pair of terms associated with vulcanicity:
Crater and Caldera
Answer the following:
Some volcanoes erupt explosively.
Answer the following:
Some volcanoes develop parasitic cones.
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.
How the theory of plate tectonics has explained the formation of mountains like Himalaya or Alps and of the volcanic islands.
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.
The upper part of the earth’s crust ______.
