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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
Sedimentary rocks such as limestone change into ___________.
What is crust?
Classify the following rocks by selecting the correct option given below:
limestone
What is sills?
Explain this term associated with rocks: Extrusive Igneous Rocks
State the types of rocks for the formation of which the following process is involved.
Accumulation takes place over long periods of time in seas, lakes and streams.
How are sedimentary rocks formed?
State the chief characteristics of metamorphic rocks.
Classify the following rock: Clay
Classify the following rock: Quartzite
Give one word for the following.
The outer layer of the earth.
State the properties of metamorphic rocks.
How is sand that flows in a river formed? Collect some information about where the sand comes from.
Match the following:
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
Classify and explain the rocks.
Rocks are classified into ______ types.
______ rocks are also known as stratified rocks.
Explain the different types of sedimentary 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.
