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प्रश्न
Explain the various parts of a volcano.
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उत्तर
A volcano represents some typical parts e.g. the molten rock or magma mostly lava makes the conical body of a volcano. Magma chamber is the source of erupting magma. Vent is the main channel through which the magma erupts outwards. Crater is the mouth or uppermost part of a volcano which is a big hole from which magma erupts and spreads all over.
संबंधित प्रश्न
Fill in the blanks with suitable words:
Volcanic activity is a ______ movement.
What is a volcano?
What is the difference between magma and lava?
Give one example of an active volcano.
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. |
Fill in the blank below:
A lava ___________is made up of basic lava flows solidified away from the vent.
In which belt most of the volcanoes of the world are found?
Indicate the world distribution of active volcanoes.
Distinguish between :
Volcanic Dust and Volcanic Ash.
Why is volcanic activity often associated with mountain building ?
What is a geyser?
Give two of its main characteristics of Geysers
What is the following:
‘Ring of Fire’
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 :
A volcano which has the possibility of erupting in future.
Give one word for the following :
A volcano where magma reaches the surface through a vent or a pipe..
Which four of the following words are connected with volcanic activity:
Karst, crater, drumlin, stalactite, gully, potholesl, ash, basalt, swallow, holes, dyke, domes, bluffs.
What is the following :
Fissure type of volcanoes
What is the following :
Epicentre
______ Volcano is known as light house of Mediterranean Sea.
An example for active volcano is ______.
Distinguish between Active volcano and dormant volcano
Iceland, the most active volcanic area is located on the ______.
Choose the odd one
An active volcano, Dormant volcano, Extinct Volcano, Shield volcano
