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प्रश्न
What are the influences of volcanoes eruption on man?
OR
What is the importance of volcanoes?
OR
Mention adverse and beneficial effects of volcanoes.
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उत्तर
Adverse effects of volcanoes
- Most of the recently formed volcanic areas are barren and forbidding to man.
- The sudden flow of basic lava from an eruptive volcano may cause the total destruction of human life property and crops in the neighbouring areas.
- The Karakatoa volcanic eruption (in 1883) caused such high sea waves that Karakatoa and several other neighbouring islands were completely destroyed.
- Volcanoes eruption of Vesuvius in 79 A.D. buried and destroyed completely the two Roman towns of Pompeii and Herculaneum.
Beneficial effects of Volcanoes :
- The soil made up of lava is very fertile.
- Lakes are formed when the craters are filled up with waters.
- Several minerals which are found deep down come up near the surface of the earth.
- Lava flows have preserved many fossils which throw much light on the past life.
संबंधित प्रश्न
Give one example of volcanic mountains.
Give one example of an active volcano.
What is the difference between a dormant volcano and an extinct volcano?
Name two types of landforms made by volcanoes. Give an example of each type.
How are hot springs formed?
Match the Following:
| Column A | Column B |
| 1. Vent | (a) An active volcano |
| 2. Extinct | (b) Hot water fountain |
| 3. Geyser | (c) Dead Volcano |
| 4. Mt. Stromboli | (d) An opening in the earth's crust through which lava flows. |
| 5. Cinder Cone | (e) A volcanic landform. |
Explain the various parts of a volcano.
Which volcano is known as the ‘lighthouse of the Mediterranean?
In which belt most of the volcanoes of the world are found?
Describe the effect of volcanic eruption of Karakatoa in 1883.
Name a well known geyser.
Differentiate between active dormant and extinct volcanoes.
Give reasons for the following:
Basic lava cones are broader than Acid lava cones.
Give reasons for the following:
The Circum-Pacific Belt of volcanoes is called ‘The Ring of Fire’.
Answer the following:
Plate margins are zones of great volcanic activity.
Give one word for the following :
The funnel shaped hollow at the top of a volcanic cone.
Give one word for the following:
A large sill of acid lava which has solidified gradually giving a dome-like shape.
Give one word for the following :
A volcano whose eruption buried and destroyed two Roman towns.
Which type of lavas weather into more fertile soil. Name also one useful feature of volcanicity other than soil fertility.
What is the following :
Fissure type of volcanoes
Choose the odd one
Iceland, the most active volcanic area is located on the ______.
Choose the odd one
Mt. Popa, Mt. Fujiyama, Mt. Kilimanjaro, Mt. Kenya.
