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प्रश्न
Explain this term associated with rocks: Fossil fuels
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उत्तर
These are the fuels accumulated between two impermeable layers of the sedimentary rocks, e.g. peat, coal and petroleum etc.
संबंधित प्रश्न
Why is coal hard and chunky?
Rocks and minerals play a very important role in our lives.
What problems would you face in their absence?
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.
Distinguish between the following:
Thermal and Dynamic Metamorphism.
Explain the formation of sedimentary rocks on the basis of agents of formation.
How are chemically-formed sedimentary rocks formed? Give examples.
What are metamorphic rocks?
Classify the following rock: Marble
Fill in the blanks
______ is formed, when the angular and coarse grains of some durable minerals are cemented together.
Fill in the blanks
______ rocks cover wide area in Peninsular India and Columbia, the Snake Plateau of the U.S.A.
How are sedimentary rocks classified?
______ is known as the primary rocks.
Choose the incorrect statement from the following.
What are fossils?
What are the uses of soil?
Mention some uses of 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. | 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.
