(English Medium) ICSE Class 9 - CISCE Question Bank Solutions for Geography

Why is volcanic activity often associated with mountain building ?

Describe any three advantages of volcanoes.

What is a geyser?

Give two of its main characteristics of Geysers

Name a well known geyser.

State two ways in which lava may come out of the earth’s crust giving an example of each type of these volcanic activities.

Differentiate between active dormant and extinct volcanoes.

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 :
The funnel shaped hollow at the top of a volcanic cone.

Give one word for the following :
The lava which is poor in silica and rich in iron and magnesium.

Give one word for the following :
A volcano which has the possibility of erupting in future.

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 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.

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.

Describe the distribution of volcanoes in the world.
OR
Name the important belts of volcanoes.