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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
Rocks and minerals play a very important role in our lives.
Can you imagine modern life without minerals?
Why are the igneous rocks also called the primary rocks?
State two characteristics of Basic Igneous Rocks.
What is sills?
Name the types Sedimentary rocks based on agents of formation.
What is metamorphism?
How are rocks important to us?
Classify the following rock: Dolomite
Give one word for the following.
The core of the earth occupied by rock in iron and nickel.
Fossils are found in.
______ is known as the primary rocks.
Mention the types of rocks based on formation?
The types of rocks based on formation are
Distinguish between:
Internal Processes and External processes.
Lava comes out from a volcano.
Explain about Petrology.
The oldest sedimentary rocks of the world have been identified in ______.
Explain the different types of sedimentary rocks.
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
| A | B | ||
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
Match the following.
| A. | Granite | 1. | Bed rock |
| B. | Soil layer | 2. | Plutonic rock |
| C. |
Barren island |
3. | Strip farming |
| D. | Soil conservation | 4. | Active Volcano |
