Advertisements
Advertisements
प्रश्न
Why are Sedimentary rocks called the Secondary rocks?
Advertisements
उत्तर
Sedimentary rocks are called Secondary rocks or derived – rocks because they are derived by the denudation of other rocks.
संबंधित प्रश्न
What is the difference between the inner and the outer core?
What are minerals?
Classify the following rocks by selecting the correct option given below:
Gneiss
Distinguish between the following pair:
Degradation and aggradation
What is sills?
Which rocks are associated with ores of metals?
Briefly define Mechanical Metamorphism.
Explain this term associated with rocks: Metamorphism
State the types of rocks for the formation of which the following process is involved.
Formation of large crystals, coarse texture and slow cooling and compaction.
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.
Describe how igneous rocks are formed.
Give one word for the following.
The upper part of lithosphere, which is rich in silica and aluminium.
Give one word for the following.
The best example of chemically-formed sedimentary rock, which has been formed by the evaporation of water from solution containing minerals.
Give one term for the following statement:
Sheet like body of igneous rock.
How is Plutonic rock formed?
Give reasons for the following
Silicates are the most common rock forming minerals.
An aggregate of minerals on the Earth’s Crust is called ______.
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 |
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
