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प्रश्न
What is the difference between magma and lava?
What is the main difference between magma and lava?
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उत्तर
| Magma | Lava |
| 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. |
| Molten rock beneath the Earth’s surface. | Molten rock that has erupted onto the Earth’s surface. |
| Contains dissolved gases and crystals. | Loses most gases when it erupts. |
| Found in magma chambers. | Flows over land and cools to form solid rock. |
| Temperature is generally higher. | Slightly cooler after exposure to air. |
संबंधित प्रश्न
What is a volcano?
Name the three types of volcanoes on the basis of the frequency of their eruption.
The forces arising from the interior of the earth:
Fill in the blank below:
The molten rock that reaches the surface of the earth is called ______.
Explain the various parts of a volcano.
In which belt most of the volcanoes of the world are found?
Indicate the world distribution of active volcanoes.
Distinguish between :
Seismology and Volcanology.
Distinguish between :
Volcanic Dust and Volcanic Ash.
Describe the effect of volcanic eruption of Karakatoa in 1883.
Describe any three advantages of volcanoes.
What is a geyser?
Give two of its main characteristics of Geysers
Differentiate between active dormant and extinct volcanoes.
What is the following:
‘Ring of Fire’
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..
Give one word for the following :
A volcano whose eruption buried and destroyed two Roman towns.
Describe the distribution of volcanoes in the world.
OR
Name the important belts of volcanoes.
What is the following :
Fissure type of volcanoes
What is the following :
Epicentre
______ Volcano is known as light house of Mediterranean Sea.
An example for active volcano is ______.
Give an example of extinct volcano.
Name the three types of volcanoes based on periodicity of eruption.
Describe the classification of volcanoes based on the eruptions.
How many active volcanoes in the world?
Choose the odd one.
Stromboli, Helens, Hawaii, Fujiyama
