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प्रश्न
Give one word for the following.
Stratified rock formed organically but from vegetative matter-swamps and forests.
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उत्तर
Carbonaceous rocks
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: ______________.
Classify the following rocks by selecting the correct option given below:
gypsum
How do acidic igneous rocks differ from basic igneous rocks?
What are metamorphic rocks?
With the help of your teacher, collect different types of rocks such as granite, sandstone, limestone, marble, slate, graphite, etc. and prepare a chart containing information about their colour, hardness, texture, and permeability.
Which rocks are associated with fossil fuels?
What are known as metamorphic rocks?
Briefly define Mechanical Metamorphism.
State the types of rocks for the formation of which the following process is involved.
Accumulation takes place over long periods of time in seas, lakes and streams.
Classify the following rock: Peat
Classify the following rock: Slate
Give one word for the following.
A sedimentary rock, which is composed of microscopically fine, soft and smooth particles.
How are sedimentary rocks classified?
Give reasons for the following
Extrusive rocks generally have small crystals.
Match the following:
| (a) | Igneous | (i) | Magma |
| (b) | Sedimentary | (ii) | Transformation |
| (c) | Metamorphic | (iii) | Gypsum |
| (d) | Molten material | (iv) | Basalt |
| (e) | Rock Cycle | (v) | Marble |
What are metamorphic rocks?
Explain Dynamic 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 |
