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प्रश्न
Give two examples of metamorphic rocks.
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उत्तर
- Marble: Formed when limestone is subjected to heat and pressure. It becomes harder, crystalline and is often used in sculpture and building.
- Slate: Formed from shale under heat and pressure. It becomes fine-grained, splits into smooth layers, and is used for roofing and flooring.
संबंधित प्रश्न
Write True or False. Rewrite the false statement correctly :
Minerals are organic substances.
Give one difference between Extrusive igneous and Intrusive igneous rocks.
Name two important landforms made by Igneous Rocks.
How are rocks important to us?
Classify the following rock: Dolomite
Classify the following rock: Marble
Fill in the blanks
______ is formed, when the angular and coarse grains of some durable minerals are cemented together.
Fill in the blanks
______ rock contain a low percentage of silica and a high percentage of basic oxides.
Give one example of an area of: Igneous rocks
Why are Sedimentary rocks called the Secondary rocks?
State the properties of metamorphic rocks.
Why are the Igneous Rocks called Primary Rocks?
Give an example of a Plutonic rock.
Give reasons for the following
Silicates are the most common rock forming minerals.
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
Minerals exist in nature ¡n the form of ______ or ______.
Why are crystalline rocks called so?
What are the characteristics of Sedimentary rocks?
Match the following.
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
