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प्रश्न
What is the following :
Spine or plug
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उत्तर
Spine or plug: Acid lava dome is formed when viscous lava solidifies quickly and gives rise to steep sloping cones. This is known as a spine or plug. Sometimes these spines and plugs are exposed by denudation.
संबंधित प्रश्न
Explain the types of volcanoes on the basis of periodicity of eruption with examples.
Give one example of volcanic mountains.
Fill in the blanks with suitable words:
Volcanic activity is a ______ movement.
Give one example of an active volcano.
What are known as Shield volcanoes?
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. |
Name the three belts where volcanoes are found.
Distinguish between :
Volcanic Dust and Volcanic Ash.
Describe the effect of volcanic eruption of Karakatoa in 1883.
Give two of its main characteristics of Geysers
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 one word for the following :
The lava which is poor in silica and rich in iron and magnesium.
Which type of lavas weather into more fertile soil. Name also one useful feature of volcanicity other than soil fertility.
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 are the influences of volcanoes eruption on man?
OR
What is the importance of volcanoes?
OR
Mention adverse and beneficial effects of volcanoes.
What is the following :
Fissure type of volcanoes
What is the following :
Epicentre
Give an example of extinct volcano.
Distinguish between Active volcano and dormant volcano
How many active volcanoes in the world?
Choose the odd one
An active volcano, Dormant volcano, Extinct Volcano, Shield volcano
Choose the odd one
Mt. Popa, Mt. Fujiyama, Mt. Kilimanjaro, Mt. Kenya.
