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प्रश्न
What are the influences of volcanoes eruption on man?
OR
What is the importance of volcanoes?
OR
Mention adverse and beneficial effects of volcanoes.
उत्तर
Adverse effects of volcanoes
- Most of the recently formed volcanic areas are barren and forbidding to man.
- The sudden flow of basic lava from an eruptive volcano may cause the total destruction of human life property and crops in the neighbouring areas.
- The Karakatoa volcanic eruption (in 1883) caused such high sea waves that Karakatoa and several other neighbouring islands were completely destroyed.
- Volcanoes eruption of Vesuvius in 79 A.D. buried and destroyed completely the two Roman towns of Pompeii and Herculaneum.
Beneficial effects of Volcanoes :
- The soil made up of lava is very fertile.
- Lakes are formed when the craters are filled up with waters.
- Several minerals which are found deep down come up near the surface of the earth.
- Lava flows have preserved many fossils which throw much light on the past life.
APPEARS IN
संबंधित प्रश्न
Explain the types of volcanoes on the basis of periodicity of eruption with examples.
Give one example of volcanic mountains.
Give one example each of an active volcano and a dormant volcano.
What is the difference between dormant volcano and an extinct 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?
How are hot springs formed?
Fill in the blank below:
The forces arising from the interior of the earth are called _________ forces
Which volcano is known as the ‘lighthouse of the Mediterranean?
Name the three belts where volcanoes are found.
Distinguish between :
Seismology and Volcanology.
Describe the materials thrown out during volcanic eruption.
Describe any three advantages of volcanoes.
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.
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 where magma reaches the surface through a vent or a pipe..
What is the following :
Fissure type of volcanoes
What is the following :
Epicentre
An example for active volcano is ______.
Answer in a word
Give an example of extinct volcano.
Distinguish between Active volcano and dormant volcano
Iceland, the most active volcanic area is located on the ______.
Choose the odd one.
Stromboli, Helens, Hawaii, Fujiyama
