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प्रश्न
How are chemically-formed sedimentary rocks formed? Give examples.
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उत्तर
Chemically formed sedimentary rocks are formed through chemical action of water. Some mineral like limestones and salts are dissolved into the water and after the evaporation of water form a particular type of rock which is formed by the chemical sedimentation of limestones into gypsum and salt into various types of nitrates.
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: ______________.
Write True or False. Rewrite the false statement correctly :
Minerals are organic substances.
Differentiate between SIAL and SIMA.
The photograph shows you a type of rock that is widely used in the construction industry.
- Name the type of rock.
- How is it formed?
Name any two characteristics of Igneous Rocks.
Explain this term associated with rocks: Laccoliths and Batholiths
Explain this term associated with rocks: Fossil fuels
Distinguish between the following:
Thermal and Dynamic Metamorphism.
How are sedimentary rocks classified on the basis of their formation?
In what type of rocks do you find fossils and why?
What are metamorphic rocks?
Give some examples of metamorphic rocks formed from sedimentary and igneous rocks.
Classify the following rock: Shale
Classify the following rock: Quartzite
Give one word for the following.
Stratified rock formed organically but from vegetative matter-swamps and forests.
Fill in the blanks
______ is the best example of the wind deposited stratified rock.
What is the basis for the classification of rocks?
______ rocks are also known as stratified rocks.
What is thermal metamorphism?
Match the following:
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
