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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
Give one example of volcanic mountains.
Fill in the blanks with suitable words:
Volcanic activity is a ______ movement.
Give one example of an active volcano.
What is the difference between a dormant volcano and an extinct volcano?
What is called the Pacific Ring of Fire? Why is it called so?
How are hot springs formed?
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.
Name the three belts where volcanoes are found.
Indicate the world distribution of active volcanoes.
Distinguish between :
Seismology and Volcanology.
Distinguish between :
Volcanic Dust and Volcanic Ash.
Why is volcanic activity often associated with mountain building ?
What is a geyser?
Differentiate between active dormant and extinct volcanoes.
What is the following:
‘Ring of Fire’
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 which has the possibility of erupting in future.
Give one word for the following :
A volcano where magma reaches the surface through a vent or a pipe..
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A volcano whose eruption buried and destroyed two Roman towns.
Give an example of extinct volcano.
Describe the classification of volcanoes based on the eruptions.
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.
