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प्रश्न
State two ways in which lava may come out of the earth’s crust giving an example of each type of these volcanic activities.
उत्तर
Two main types of volcanic eruptions are :
- Explosive and
- Quiet or Hawaiian.
- The Explosive eruption is the most violent and destructive Explosion of pent up gases mainly steam cause enormous quantities of magma to be thrown into the air to form great clouds. Example Krakatoa volcano in Sunda Strait in Indonesia erupted in 1883.
- The Quiet eruption cause and other gases to escape. There is no violent explosion. Lava flows the creators and flows down the sides of the cone.
Example: Hawaiian volcano and Mauna Loa.
APPEARS IN
संबंधित प्रश्न
Fill in the blanks with suitable words:
Volcanic activity is a ______ movement.
What is a volcano?
What is the difference between magma and lava?
What is the difference between dormant volcano and an extinct volcano?
Name the three types of volcanoes on the basis of the frequency of their eruption.
Fill in the blank below:
The Circum-Paciflc Belt is also called ____________.
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 effect of volcanic eruption of Karakatoa in 1883.
Why is volcanic activity often associated with mountain building ?
What is a geyser ?
Give two of its main characteristics of Geysers
Differentiate between active dormant and extinct volcanoes.
Answer the following:
Plate margins are zones of great volcanic activity.
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..
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.
What is the following :
Epicentre
______ Volcano is known as light house of Mediterranean Sea.
An example for active volcano is ______.
Choose the odd one
Answer in a word
Give an example of extinct volcano.
