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प्रश्न
How are igneous rocks formed?
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उत्तर
Igneous rocks are the primary rocks formed by the solidification of the molten magma.
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संबंधित प्रश्न
Why is diamond clear and hard while graphite is soft?
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?
Classify the following rock: Gypsum
Give one term for the following statement:
Igneous rocks of deep seated origin.
Give reasons for the following
Man’s habitat is the biosphere and not the lithosphere in the true sense.
Match the following:
| 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 |
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
