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प्रश्न
What is the difference between magma and lava?
उत्तर
Molten material moving under the earth’s crust is called magma. When magma comes to the surface of the earth it is known as lava
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संबंधित प्रश्न
Fill in the blanks with suitable words:
Volcanic activity is a ______ movement.
What is a volcano?
Give one example each of an active volcano and a dormant volcano.
Name the three types of volcanoes on the basis of the frequency of their eruption.
Fill in the blank below:
The molten rock that reaches the surface of the earth is called ______.
Fill in the blank below:
The Circum-Paciflc Belt is also called ____________.
Which volcano is known as the ‘lighthouse of the Mediterranean?
In which belt most of the volcanoes of the world are found?
Indicate the world distribution of active volcanoes.
Distinguish between :
Seismology and Volcanology.
Describe the materials thrown out during volcanic eruption.
Describe the effect of volcanic eruption of Karakatoa in 1883.
What is a geyser ?
Name a well known geyser.
What is the following:
‘Ring of Fire’
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.
Which type of lavas weather into more fertile soil. Name also one useful feature of volcanicity other than soil fertility.
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 :
Epicentre
______ Volcano is known as light house of Mediterranean Sea.
An example for active volcano is ______.
Name the three types of volcanoes based on periodicity of eruption.
Choose the odd one.
Stromboli, Helens, Hawaii, Fujiyama
