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Questions
What is the magma chamber of a volcano?
What do you mean by the magma chamber of a volcano?
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Solution
The magma chamber of a volcano is a large underground reservoir where molten rock (magma) is stored beneath the Earth’s surface. It supplies magma to the volcano during an eruption. The magma in this chamber contains dissolved gases and crystals, and when pressure builds up, it forces the magma upward through vents, leading to an eruption.
RELATED QUESTIONS
What do you understand by ‘Vulcanism’?
What are ‘Volcanoes’?
Distinguish between the following pair of terms associated with vulcanicity:
Geysers and Hot Springs
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 as a whole does not expand.
______ belt is known as the “Ring of Fire”.
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?
The upper part of the earth’s crust ______.
