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प्रश्न
How are rocks different from minerals?
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उत्तर
Minerals are natural inorganic substances having a crystalline form with definite physical and chemical properties whereas rocks are made up of a combination of different minerals compacted together. There are about 2,000 minerals in the earth’s crust and these combine differently to form various kinds of rocks.
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संबंधित प्रश्न
Write True or False. Rewrite the false statement correctly :
Rocks are used in construction industries.
Describe the process that leads to exfoliation.
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In what type of rocks do you find fossils and why?
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______ is the best example of the wind deposited stratified rock.
Lava comes out from a volcano.
Oldest Sedimentary rocks of the world has been identified in Green land.
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.
