Advertisements
Advertisements
प्रश्न
Describe the materials thrown out during volcanic eruption.
Advertisements
उत्तर
The materials thrown out of a volcano due to eruptions are of three types :
- Solid materials:- The solid materials include large fragments of rocks known as volcanic Bombs. The finest particles include cinder volcanic ash dust.
- Liquid materials:- The liquid materials include basic lava and Acid lava. Acid lava has more silica while Basic lava has a low content of Silica.
- Gaseous materials:- The gaseous material is mainly composed of steam. The other gases include Oxygen Hydrogen Sulphuric acid Carbon dioxide etc.
संबंधित प्रश्न
Explain the types of volcanoes on the basis of periodicity of eruption with examples.
What is the difference between a dormant volcano and an extinct volcano?
Name the three types of volcanoes on the basis of the frequency of their eruption.
What are known as Shield volcanoes?
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.
Name the three belts where volcanoes are found.
Distinguish between :
Seismology and Volcanology.
Describe the effect of volcanic eruption of Karakatoa in 1883.
Why is volcanic activity often associated with mountain building ?
State two ways in which lava may come out of the earth’s crust giving an example of each type of these volcanic activities.
What is the following:
‘Ring of Fire’
Give reasons for the following:
The Circum-Pacific Belt of volcanoes is called ‘The Ring of Fire’.
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.
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 :
Epicentre
An example for active volcano is ______.
Choose the odd one
Name the three types of volcanoes based on periodicity of eruption.
Describe the classification of volcanoes based on the eruptions.
Iceland, the most active volcanic area is located on the ______.
Choose the odd one.
Stromboli, Helens, Hawaii, Fujiyama
Choose the odd one
Mt. Popa, Mt. Fujiyama, Mt. Kilimanjaro, Mt. Kenya.
