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प्रश्न
What are known as metamorphic rocks?
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उत्तर
Metamorphic rocks are formed by the complete change of texture of rocks through volcanism and diastrophism. When igneous or sedimentary rocks are buried deep inside the Earth, they face high heat and pressure. This changes their minerals and structure, creating new rocks with different properties.
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संबंधित प्रश्न
Write True or False. Rewrite the false statement correctly :
Sedimentary rocks are formed by the cooling and solidification of molten rock called magma
State two characteristics of the mantle.
How are sedimentary rocks formed?
Name two important landforms made by Igneous Rocks.
Explain this term associated with rocks: Lithification of Rocks.
Distinguish between the following:
Acid Igneous Rocks and Basic Igneous Rocks.
State the types of rocks for the formation of which the following process is involved.
Accumulation takes place over long periods of time in seas, lakes and streams.
What is metamorphism?
In what type of rocks do you find fossils and why?
Classify the following rock: Graphite
Give one word for the following.
Igneous rocks, which contain a high percentage of silica.
State the properties of metamorphic rocks.
Give one term for the following statement:
Fine grained metamorphic rock, generally produced by the low grade metamorphism of shale.
Which one of the following is the most widespread most and productive category of soil.
This is the storehouse of rocks.
Lava comes out from a volcano.
Explain the different types of sedimentary rocks.
Match the following.
| Group A | Group B | ||
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
