Advertisements
Advertisements
Question
What are known as metamorphic rocks?
Advertisements
Solution
Metamorphic rocks are formed by the complete change of texture of rocks through volcanism and diastrophism. When igneous or sedimentary rocks are buried deep inside the Earth, they face high heat and pressure. This changes their minerals and structure, creating new rocks with different properties.
APPEARS IN
RELATED QUESTIONS
Write True or False. Rewrite the false statement correctly :
Sedimentary rocks are formed by the cooling and solidification of molten rock called magma
What are minerals?
Classify the following rocks by selecting the correct option given below:
sandstone
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?
Why are the igneous rocks also called the primary rocks?
Name any two characteristics of Igneous Rocks.
Mention any two characteristics of Sedimentary Rocks.
Name the three stages of lithification of Sedimentary rocks.
Explain this term associated with rocks: Lithification of Rocks.
Distinguish between rocks and minerals.
Give one word for the following.
A sedimentary rock, which is composed of microscopically fine, soft and smooth particles.
Give reasons for the following
Silicates are the most common rock forming minerals.
Fill in the blank below:
______are intrusions of igneous rock that are vertical in shape
Igneous rocks are called primary rocks.
Classify and explain the rocks.
Match the following.
| 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 |
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.
