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प्रश्न
How are rocks important to us?
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उत्तर
Rocks are very important to us because they provide useful materials like minerals, metals, and fuels such as coal and petroleum. They are used in building houses, roads, and monuments. Over time, rocks break down to form soil that supports plant growth. Some rocks also store groundwater, which we use for drinking and irrigation. Thus, rocks are essential for our daily life and for the environment.
संबंधित प्रश्न
Fill in the blank
A category of rock which is formed by the alteration of the parent rock due to heat and pressure is called: ______________.
What is the difference between the inner and the outer core?
Why are the igneous rocks also called the primary rocks?
Which rocks are associated with ores of metals?
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.
Explain the formation of sedimentary rocks on the basis of agents of formation.
What are the causes of metamorphism?
Classify the following rock: Clay
Classify the following rock: Loess
Classify the following rock: Marble
Classify the following rock: Graphite
Give one word for the following.
Stratified rock formed organically but from vegetative matter-swamps and forests.
Give one word for the following.
Igneous rocks, which contain a low percentage of silica.
Diamond is an example of _______ rock.
Lava comes out from a volcano.
______ refer to rock in Greek.
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.
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
