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प्रश्न
What is the basis for the classification of rocks?
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उत्तर
The basis for the classification of rocks are their mineral composition, colour and texture.
संबंधित प्रश्न
Why is diamond clear and hard while graphite is soft?
How are rocks different from minerals?
How are igneous rocks formed?
Name any three elements of the earth’s crust.
Which rocks are associated with fossil fuels?
Name the rocks which are most widespread on the earth.
Which agents are responsible for deposition of sediments?
State the types of rocks for the formation of which the following process is involved.
Decomposition of organic matter at different stages and over different periods of time.
Name the main types of rocks.
Give some examples of metamorphic rocks formed from sedimentary and igneous rocks.
Give one term for the following statement:
Fine grained metamorphic rock, generally produced by the low grade metamorphism of shale.
Why are the Igneous Rocks called Primary Rocks?
Why fossils are preserved in Sedimentary and not in Igneous rocks?
How are igneous rocks formed?
______ refer to rock in Greek.
Mention some uses of rocks.
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
Match the following.
| A. | Granite | 1. | Bed rock |
| B. | Soil layer | 2. | Plutonic rock |
| C. |
Barren island |
3. | Strip farming |
| D. | Soil conservation | 4. | Active Volcano |
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
Match the following:
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
