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प्रश्न
Name any two characteristics of Igneous Rocks.
State the main characteristics of igneous rocks.
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उत्तर
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Crystalline Structure: Igneous rocks are usually crystalline, meaning they are made up of interlocking mineral crystals formed from the cooling and solidification of magma or lava.
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Compact and Hard: They are generally very compact and hard, making them durable and resistant to weathering, which is why they are often used in building and construction.
संबंधित प्रश्न
What are known as metamorphic rocks?
Explain this term associated with rocks: Fossil fuels
Explain this term associated with rocks: Lithification of Rocks.
Distinguish between the following:
Sills and Dykes.
How are igneous rocks classified on the basis of their chemical composition?
Explain the formation of sedimentary rocks on the basis of agents of formation.
Give a detailed account of lithiflcation of sedimentary rocks.
What are metamorphic rocks?
Classify the following rock: Peat
How is Plutonic rock formed?
Give reasons for the following
Rocks are of great economic significance.
How is sand that flows in a river formed? Collect some information about where the sand comes from.
______ is known as the primary rocks.
What are fossils?
______ into slate caused by thermal metamorphism.
Out of 2,000 different types, only ______ are the basic minerals commonly found all over the earth.
Minerals exist in nature ¡n the form of ______ or ______.
Why are crystalline rocks called so?
| A | B | ||
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
Match the following.
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
