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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
Give one example of volcanic mountains.
Fill in the blanks with suitable words:
Volcanic activity is a ______ movement.
What is the difference between magma and lava?
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?
Name the three types of volcanoes on the basis of the frequency of their eruption.
What are known as Shield volcanoes?
Fill in the blank below:
A lava ___________is made up of basic lava flows solidified away from the vent.
Name the three belts where volcanoes are found.
In which belt most of the volcanoes of the world are found?
Distinguish between :
Seismology and Volcanology.
Describe any three advantages of volcanoes.
What is a geyser?
Give two of its main characteristics of Geysers
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:
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’.
Give one word for the following :
The funnel shaped hollow at the top of a volcanic cone.
Give one word for the following :
A volcano where magma reaches the surface through a vent or a pipe..
Give one word for the following :
A volcano whose eruption buried and destroyed two Roman towns.
What are the influences of volcanoes eruption on man?
OR
What is the importance of volcanoes?
OR
Mention adverse and beneficial effects of volcanoes.
Choose the odd one
Name the three types of volcanoes based on periodicity of eruption.
Describe the classification of volcanoes based on the eruptions.
How many active volcanoes in the world?
Choose the odd one.
Stromboli, Helens, Hawaii, Fujiyama
