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प्रश्न
Classify the igneous rocks on the basis of their place of origin.
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उत्तर
On the basis of origin igneous rocks are divided into two groups i.e. Extrusive and Instrusive igneous rocks. Extrusive igneous rocks are found on the surface of the earth by cooling down of erupted magma. Intrusive igneous rocks are formed beneath the earth’s crust after solidification of magma.
संबंधित प्रश्न
Fill in the blank
Sedimentary rocks are formed from _____________ accumulated over long periods.
State two characteristics of the mantle.
How are sedimentary rocks formed?
What is Geology?
Give two examples of sedimentary rocks.
Explain this term associated with rocks: Extrusive Igneous Rocks
How are igneous rocks classified on the basis of their chemical composition?
Give some examples of metamorphic rocks formed from sedimentary and igneous rocks.
Give one example of an area of: Igneous rocks
Give one term for the following statement:
Formed when mud layers compacted under great pressure composing 80% of this rock.
Give one term for the following statement:
Igneous rocks of deep seated origin.
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Silicates are the most common rock forming minerals.
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Lava comes out from a volcano.
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Out of 2,000 different types, only ______ are the basic minerals commonly found all over the earth.
Match the following.
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
