Advertisements
Advertisements
प्रश्न
State two characteristics of Basic Igneous Rocks.
Advertisements
उत्तर
-
Higher Percentage of Oxides: They have a higher percentage of iron and magnesium oxides, giving them a dark colour.
-
Low Silica Content: They contain less silica compared to acidic rocks, making their magma more fluid.
APPEARS IN
संबंधित प्रश्न
Why is coal hard and chunky?
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: ______________.
How do acidic igneous rocks differ from basic igneous rocks?
Why are the igneous rocks also called the primary rocks?
Distinguish between the following:
Acid Igneous Rocks and Basic Igneous Rocks.
What is meant by a rock?
Sedimentary rocks are also called stratified rocks. Why?
Distinguish between Thermal metamorphism and Dynamic metamorphism.
Give one word for the following.
Stratified rock formed organically but from vegetative matter-swamps and forests.
Give one word for the following.
Igneous rocks, which contain a high percentage of silica.
Why are Sedimentary rocks called the Secondary rocks?
Kola sample title is located in ______.
Mention the types of rocks based on formation?
The types of rocks based on formation are
How are igneous rocks formed?
What is 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.
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. | Granite | 1. | Bed rock |
| B. | Soil layer | 2. | Plutonic rock |
| C. |
Barren island |
3. | Strip farming |
| D. | Soil conservation | 4. | Active Volcano |
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
