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प्रश्न
Distinguish between :
Volcanic Dust and Volcanic Ash.
उत्तर
Volcanic Dust: The finely pulverised fragments of rock are called volcanic ash.
Volcanic Ash: very fine particles which blow into the air are called volcanic dust.
APPEARS IN
संबंधित प्रश्न
Explain the types of volcanoes on the basis of periodicity of eruption with examples.
Fill in the blanks with suitable words:
Volcanic activity is a ______ movement.
What is a volcano?
What is the difference between magma and lava?
Name two types of landforms made by volcanoes.
What is called the Pacific Ring of Fire? Why is it called so?
Match the Following:
| Column A | Column B |
| 1. Vent | (a) An active volcano |
| 2. Extinct | (b) Hot water fountain |
| 3. Geyser | (c) Dead Volcano |
| 4. Mt. Stromboli | (d) An opening in the earth's crust through which lava flows. |
| 5. Cinder Cone | (e) A volcanic landform. |
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 ______.
Explain the various parts of a volcano.
Name the largest active volcano in the world.
Which volcano is known as the ‘lighthouse of the Mediterranean?
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.
Differentiate between active dormant and extinct volcanoes.
Give reasons for the following:
Basic lava cones are broader than Acid lava cones.
Give one word for the following :
A volcano whose eruption buried and destroyed two Roman towns.
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 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
Name the three types of volcanoes based on periodicity of eruption.
Distinguish between Active volcano and dormant volcano
How many active volcanoes in the world?
Choose the odd one
An active volcano, Dormant volcano, Extinct Volcano, Shield volcano
Choose the odd one
Mt. Popa, Mt. Fujiyama, Mt. Kilimanjaro, Mt. Kenya.
