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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
Why is coal hard and chunky?
Fill in the blank
Sedimentary rocks such as limestone change into ___________.
Write True or False. Rewrite the false statement correctly :
Minerals are organic substances.
Name any three elements of the earth’s crust.
Briefly define Mechanical Metamorphism.
How are sedimentary and igneous rocks formed?
How are rocks important to us?
What are metamorphic rocks?
Classify the following rock: Clay
Give one word for the following.
Igneous rocks, which contain a low percentage of silica.
Fill in the blanks
The interior layer is the core, which is made up mainly of iron and nickel, and is called ______.
How are sedimentary rocks classified?
Give one term for the following statement:
It has a definite chemical composition with its own chemical and physical properties.
Give one term for the following statement:
Formed by evaporation in saline lakes.
Which of the following monuments are built-in igneous rock?
- The Taj Mahal
- Fort Raigad
- The Red Fort
- Ellora Sculpture
Classify and explain the rocks.
Match the following:
| (a) | Igneous | (i) | Magma |
| (b) | Sedimentary | (ii) | Transformation |
| (c) | Metamorphic | (iii) | Gypsum |
| (d) | Molten material | (iv) | Basalt |
| (e) | Rock Cycle | (v) | Marble |
Explain the type of Igneous Rocks.
______ are chemical substances which exist in nature.
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
