Morning Star solutions for Total Geography [English] Class 9 ICSE chapter 7 - Volcanoes [Latest edition]

What is a volcano?

What is the difference between magma and lava?

Give one example each of an active volcano and a dormant volcano.

What is the difference between dormant volcano and an extinct volcano?

What is the magma chamber of a volcano?

Name two types of landforms made by volcanoes.

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?

Mention any two extrusive landforms caused by volcanic eruptions.

Name any two intrusive landforms made by volcanic eruptions.

How are hot springs formed?

What is called the Pacific Ring of Fire? Why is it called so?

Give an example each of conical volcano and fissure volcano.

What is the difference between dormant volcano and an extinct volcano?

Match the Following:

Fill in the blank below:
The forces arising from the interior of the earth are called _________ forces

Fill in the blank below:
The molten rock that reaches the surface of the earth is called ______.

Fill in the blank below:
A lava ___________is made up of basic lava flows solidified away from the vent.

Fill in the blank below:
______are intrusions of igneous rock that are vertical in shape

Fill in the blank below:
The Circum-Paciflc Belt is also called ____________.

Explain the various parts of a volcano.

Describe the causes of volcanic eruptions.

Explain briefly the landforms created by volcanoes on the surface of the earth.

Write any three destructive effects of volcanoes.

Describe the distribution of volcanoes in the world.

Describe important volcanic landforms on earth.

Name three causes of volcanic eruptions.

Name the largest active volcano in the world.

Which volcano is known as the ‘lighthouse of the Mediterranean?

Name the three belts where volcanoes are found.

In which belt most of the volcanoes of the world are found?

Name three causes of Earthquakes.

What is epicentre?

Indicate the world distribution of active volcanoes.

Give two reasons why tremors occur inside the earth?

Distinguish between :
Seismology and Volcanology.

Distinguish between :
Volcanic Dust and Volcanic Ash.

Describe the materials thrown out during volcanic eruption.

Describe the effect of volcanic eruption of Karakatoa in 1883.

Why is volcanic activity often associated with mountain building ?

Describe the materials thrown out during volcanic eruption.

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.

What do you understand by ‘Vulcanism’?

 What are ‘Volcanoes’?

How are volcanoes formed?

Differentiate between active dormant and extinct volcanoes.

What is‘magma’?

What do you understand by ‘Crater of the Volcano’?

Describe the distribution of volcanoes in the world.

What are the influences of volcanic eruptions on man?

Give two major causes of earthquakes.

Mention some of the main effects of earthquakes.

What is the following:

Fissure type of volcanoes

What is the following:

Spine or plug

What is the following:

Caldera

What is the following:

Mud volcanoes

What is epicentre?

What is the following:

‘Ring of Fire’

What is the following:

Cinder Cone

Distinguish between the following pair of terms associated with vulcanicity:

Acidic Lava and Basic Lava

Distinguish between the following pair of terms associated with vulcanicity:

Cinder Cone and Composite Cone

Distinguish between the following pair of terms associated with vulcanicity:

Fissure-type Volcanoes and Central-types Volcanoes

Distinguish between the following pair of terms associated with vulcanicity:

Crater and Caldera

Distinguish between the following pair of terms associated with vulcanicity:

Laccolith and Lapolith

Distinguish between the following pair of terms associated with vulcanicity:

Geysers and Hot Springs

Distinguish between the following pair of terms associated with vulcanicity:

 Lava and Magma

Distinguish between the following pairs of terms associated with the crustal movement of the earth:

Tilted Block mountains and Lifted Block mountains

Distinguish between the following pairs of terms associated with the crustal movement of the earth:

Graben and Horst

Give a brief account of ‘Plate Tectonics’.

Give reasons for the following:
The Belts of volcanic activity and earthquakes are roughly the same.

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’.

Match the items given in Column A with the correct ones in Column B.

Give one word for the following :
A narrow block elevated between two normal faults.

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.

Give one word for the following :
An instrument used for recording all the earth tremors and earthquakes.

Give one word for the following :
The surface position immediately above the origin of an earthquake.

Give one word for the following :
The region where there are highest number of geysers and hot springs.

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 tectonic movements? How are these classified?

Give reasons for the following:
Earth movements have modified the Earth’s surface.

Give reasons for the following:
Internal processes are different from external processes.

Give reasons for the following:
Folding and faulting frequently go together.

Give reasons for the following:

Earth as a whole does not expand.

How the theory of plate tectonics has explained the formation of mountains like Himalaya or Alps and of the volcanic islands.

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

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 :
 Spine or plug

What is the following:

Caldera

What is the following:

Mud volcanoes

What is the following :
Epicentre 

What is the following:

‘Ring of Fire’

What is the following:

Cinder Cone

Distinguish between the following pairs of terms associated with vulcanicity:

Magma and Lava

Distinguish between the following pair of terms associated with vulcanicity:

Acidic Lava and Basic Lava

Distinguish between the following pair of terms associated with vulcanicity:

Cinder Cone and Composite Cone

Distinguish between the following pair of terms associated with vulcanicity:

Fissure-type Volcanoes and Central-types Volcanoes

Distinguish between the following pair of terms associated with vulcanicity:

Crater and Caldera

Distinguish between the following pair of terms associated with vulcanicity:

Laccolith and Lapolith

Distinguish between the following pair of terms associated with vulcanicity:

Geysers and Hot Springs

Give reasons for the following:
Basic lava cones are broader than Acid lava cones.

Give reasons for the following:
The Belts of volcanic activity and earthquakes are roughly the same.

Give reasons for the following:
The Circum-Pacific Belt of volcanoes is called ‘The Ring of Fire’.

Name one useful feature of vulcanicity other than soil fertility.

Out of the following words write down the four that are connected with volcanic activity.
Karst, crater, drumlin, stalactites, gully, pot holes, ash, basalt, swallow holes, dyke, domes, bluffs.

Give reasons for the following:

Earth’s movements have modified the Earth’s surface.

Give reasons for the following:

Earth as a whole does not expand.

Answer the following:

Some volcanoes erupt explosively.

Answer the following:

Some volcanoes develop parasitic cones.

Answer the following:

Hot springs are common in volcanic regions.

Answer the following:

Earthquakes are common in the belt of young fold mountains.

Answer the following:

Plate margins are zones of great volcanic activity.

Answer the following:

A volcanic eruption is one of the main causes of earthquakes.

Answer the following

The vent of a volcano when blocked results in an explosive eruption.