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प्रश्न
Rocks and minerals play a very important role in our lives.
Can you imagine modern life without minerals?
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उत्तर
Life without rocks and minerals would be disastrous –
Rocks are of great value to us. Some of the main benefits of- rocks are listed below :
- Soil is formed when rocks gradually break up and disintegrated by mechanical and chemical processes.
- Rocks contain a great variety of minerals that yield metals such as iron, manganese, and copper, which are important raw materials for
mineral-based manufacturing industries.
We shall face many problems if rocks and minerals get diminished.
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संबंधित प्रश्न
Explain the structure of the earth’s interior?
The photograph shows you a type of rock that is widely used in the construction industry.
- Name the type of rock.
- How is it formed?
What are metamorphic rocks?
Give one word for the following.
The core of the earth occupied by rock in iron and nickel.
What is the basis for the classification of rocks?
Give reasons for the following
Rocks are of great economic significance.
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
Explain the type of Igneous Rocks.
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.
