Advertisements
Advertisements
Question
Give reasons for the following
Rocks are of great economic significance.
Advertisements
Solution
Rocks are of great economic significance Some of the main benefits of rocks are as follows :
- After disintergration, they turn into valuable soils.
- They are the store-houses of a large number of minerals.
- They are the source of precious metals like gold, silver, platinum etc.
- They are source of fuel-minerals.
- They provide different types of stones.
RELATED QUESTIONS
What is crust?
Classify the following rocks by selecting the correct option given below:
gypsum
Describe the process that leads to exfoliation.
Name three types of rocks.
Why are the igneous rocks also called the primary rocks?
Name any two characteristics of Igneous Rocks.
What are known as metamorphic rocks?
What processes are involved in the formation of Igneous Rocks?
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.
Classify the following rock: Dolomite
Classify the following rock: Gneiss
Give one example of an area of: Sedimentary rocks in India
Give one term for the following statement:
Fine grained metamorphic rock, generally produced by the low grade metamorphism of shale.
Fossils are found in.
Diamond is an example of _______ rock.
______ rocks are also known as stratified rocks.
Minerals exist in nature ¡n the form of ______ or ______.
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 |
Match the following:
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
