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प्रश्न
What is a volcano?
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उत्तर
A volcano is a vent in the earth’s crust from which fiery hot magma erupts from the earth's interior.
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संबंधित प्रश्न
Give one example of volcanic mountains.
Name two types of landforms made by volcanoes. Give an example of each type.
What is called the Pacific Ring of Fire? Why is it called so?
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. |
The forces arising from the interior of the earth:
Fill in the blank below:
The molten rock that reaches the surface of the earth is called ______.
Fill in the blank below:
A lava ___________is made up of basic lava flows solidified away from the vent.
Name the largest active volcano in the world.
Name the three belts where volcanoes are found.
In which belt most of the volcanoes of the world are found?
Describe the effect of volcanic eruption of Karakatoa in 1883.
Describe any three advantages of volcanoes.
State two ways in which lava may come out of the earth’s crust giving an example of each type of these volcanic activities.
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:
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 :
Spine or plug
What is the following :
Epicentre
Name the three types of volcanoes based on periodicity of eruption.
Distinguish between Active volcano and dormant volcano
Iceland, the most active volcanic area is located on the ______.
