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प्रश्न
Name any three elements of the earth’s crust.
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उत्तर
These are silicon, aluminum, iron, magnesium, calcium, potassium, sodium, and nickel.
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संबंधित प्रश्न
What are minerals?
Classify the following rocks by selecting the correct option given below:
Gneiss
How are igneous rocks formed?
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 the three stages of lithification of Sedimentary rocks.
Describe how igneous rocks are formed.
State the chief characteristics of metamorphic rocks.
Differentiate between Rock and Mineral
In what type of rocks do you find fossils and why?
Give some examples of metamorphic rocks formed from sedimentary and igneous rocks.
Classify the following rock: Dolomite
Classify the following rock: Gypsum
Give one word for the following.
The lower part of ocean floor, comprising mainly of silica.
Give one example of an area of: Metamorphic rocks,
Why are Sedimentary rocks called the Secondary rocks?
Choose the incorrect statement from the following.
______ into slate caused by thermal metamorphism.
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.
