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Question
What are ‘Volcanoes’?
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Solution
‘Volcanoes’ are the outlets of magma through a vent or cracks in the form of a conical volcanic hill or through various holes known as fissure eruption.
RELATED QUESTIONS
Give an example each of conical volcano and fissure volcano.
What do you understand by ‘Crater of the Volcano’?
Distinguish between the following pair of terms associated with vulcanicity:
Lava and Magma
Distinguish between the following pair of terms associated with vulcanicity:
Fissure-type Volcanoes and Central-types Volcanoes
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:
Earthquakes are common in the belt of young fold mountains.
Give reasons for the following:
Earth’s movements have modified the Earth’s surface.
Give reasons for the following:
Earth as a whole does not expand.
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.
Explain three major zones of volcanic activities in the world.
