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प्रश्न
Why are Sedimentary rocks called the Secondary rocks?
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उत्तर
Sedimentary rocks are called Secondary rocks or derived – rocks because they are derived by the denudation of other rocks.
संबंधित प्रश्न
Why is coal hard and chunky?
With the help of your teacher, collect different types of rocks such as granite, sandstone, limestone, marble, slate, graphite, etc. and prepare a chart containing information about their colour, hardness, texture, and permeability.
What is sills?
Explain this term associated with rocks: Laccoliths and Batholiths
Describe how igneous rocks are formed.
State the chief characteristics of metamorphic rocks.
How are sedimentary and igneous rocks formed?
In what type of rocks do you find fossils and why?
What is meant by the term ‘metamorphism’?
Classify the following rock: Rock salt
Give one example of an area of: Igneous rocks
Give reasons for the following
Silicates are the most common rock forming minerals.
Distinguish between Intrusive and Extrusive Rocks
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This is the storehouse of rocks.
Intrusive Igneous rocks are also called ______ 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.
Match the following.
| Group A | Group B | ||
| 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.
