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Question
Distinguish between the following pair of terms associated with vulcanicity:
Geysers and Hot Springs
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Solution 1
| Geysers | Hot Springs |
| In a geyser, hot water and steam are thrown out at intervals in the form of a fountain. There is an old faithful geyser which erupts out exactly in a one-hour interval, these are about 100 geysers. | In a hot spring, the heated water flows out continuously without any eruptive activity such hot springs are common in Yellow stone park U.S.A. Badrinath and Mani Karan in India. These hot springs are very healthy for a bath. |
Solution 2
Hot Springs :
- It is a stream of hot water issuing from the ground. The hot water flows unobstructed quietly and continuously.
- Hot springs are common where joints fissures and porous beds allow the free exit of water to the surface. The water becomes hot when it comes into contact with the heated rocks or upper heated steam lying deep into the earth’s crust.
Geysers :
- It is a hot spring which at regular or irregular intervals throws a jet of hot water and steam into the air.
- In the case of geyser, the fissure or vent connecting the source of hot water to the surface is very narrow which greatly increases the pressure and temperature of the hot water and so when water comes out it rises high into the air.
RELATED QUESTIONS
Give an example each of conical volcano and fissure volcano.
What is‘magma’?
What is the following:
Caldera
What is the following:
Mud 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:
Some volcanoes erupt explosively.
Distinguish between the following pairs of terms associated with vulcanicity:
Magma and Lava
______ 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.
The upper part of the earth’s crust ______.
