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Answer» Complete the following table with the help of internet source | Rocks | Mode of formation | Characteristic | Example | Use | | Igneous | Formed by the solidification of molten magma | 1. These rocks are hard in nature
2.These are impermeable
3. They do not contain fossils
4. They are associated with the volcanic activities
5. These rocks are useful for construction works | Basalt, Granite | Granite : used for expensive kitchen worktops, construction of monuments, buildings, flooring and interior decoration
Basalt : Used as an abrasive ingredient of concrete
Pumice : Used to remove dead skin, powdered and used as an abrasive in polish compounds. | | Sedimentary | Formed by the sediments derived and deposited by various agents. | 1. They have many layers.
2. They are non-crystalline rocks.
3. They contains fossils.
4. They are soft and get eroded easily | Chalk Talc, Sand stone, Shale, Rock Salt | Fossil Fuel : Coal, oil, Natural gas
Sand and Gravel : Construction
Sandstone and Limestone :
Used for building stone and to make cement
Salt : Flavoring | | Metamorphic | Formed when Igneous and sedimentary
rocks subjected to high temperature and Pressure. | 1. Metamorphic rocks are mostly crystalline in nature
2. They consist of alternate bands of light and dark minerals. | Quartzite and Marble | Used in Building Material and art work, To Make statues marble is also used to produce plastics, paper |
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