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प्रश्न
Mention any two characteristics of Sedimentary Rocks.
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उत्तर
- Sedimentary rocks are formed from material derived from other rocks, including plant and animal remains. These rocks thus contain fossils.
- Sedimentary rocks are generally not crystalline. They are soft and layered, as they are formed by deposition of sediments.
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संबंधित प्रश्न
Fill in the blank
Granite is an example of intrusive ________ rocks.
Fill in the blank
A category of rock which is formed by the alteration of the parent rock due to heat and pressure is called: ______________.
Classify the following rocks by selecting the correct option given below:
basalt
Describe the process that leads to exfoliation.
Name any three elements of the earth’s crust.
Name the types Sedimentary rocks based on agents of formation.
In what type of rocks do you find fossils and why?
Classify the following rock: Quartzite
Classify the following rock: Marble
Give one word for the following.
Igneous rocks, which contain a high percentage of silica.
Give one word for the following.
Igneous rocks, which contain a low percentage of silica.
Why are Sedimentary rocks called the Secondary rocks?
Give reasons for the following
Extrusive rocks generally have small crystals.
Match the following:
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
Distinguish between Metamorphic rock and sedimentary rock.
What are fossils?
The word ‘Igneous’ is derived from the ______ word.
The oldest sedimentary rocks of the world have been identified in ______.
Why are crystalline rocks called so?
