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Types of rocks and their uses Video Lecture - Class 5
FAQs on Types of rocks and their uses Video Lecture - Class 5
| 1. What are the three types of rocks and their uses? |  |
Ans. The three types of rocks are igneous, sedimentary, and metamorphic. Igneous rocks are used in construction materials, such as granite for countertops and basalt for roads. Sedimentary rocks, like limestone, are used for making cement and as a building material. Metamorphic rocks, such as marble and slate, are used in architecture and crafting decorative items.
| 2. How are igneous rocks formed and what are their uses? | |
Ans. Igneous rocks are formed from molten lava or magma that cools and solidifies. They can be intrusive, forming inside the Earth's crust, or extrusive, forming on the Earth's surface. Igneous rocks have various uses, including as a raw material for construction, as decorative stones, and as a source of minerals and gemstones.
| 3. What are sedimentary rocks and how are they useful? | |
Ans. Sedimentary rocks are formed from the accumulation and compression of sediments over time. They can contain fossils and provide valuable information about Earth's history. Sedimentary rocks are useful as building materials, for making cement, in the production of fertilizers, and as a source of energy, such as coal and oil.
| 4. How are metamorphic rocks different from other types of rocks and what are their common uses? | |
Ans. Metamorphic rocks are formed when existing rocks undergo intense heat and pressure, causing them to change in composition and structure. Unlike igneous and sedimentary rocks, metamorphic rocks have a layered or banded appearance. They are commonly used as decorative stones, for making sculptures, as building materials, and as a source of precious and semi-precious gemstones.
| 5. What are some examples of rocks and their specific uses? | |
Ans. Some examples of rocks and their specific uses include granite, which is used for countertops and monuments; limestone, used for making cement and as a building material; sandstone, used for construction and as a decorative stone; marble, used for sculptures and architecture; and coal, used as a source of energy.
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Nov 23, 2024 Last updated |
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