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Rocks Video Lecture | Geography for UPSC CSE
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FAQs on Rocks Video Lecture - Geography for UPSC CSE
| 1. What are rocks made of? |  |
Ans. Rocks are made up of minerals, which are naturally occurring substances with a specific chemical composition and crystal structure. These minerals combine to form rocks, and the types of minerals present determine the characteristics and properties of the rock.
| 2. How are rocks classified? | |
Ans. Rocks are classified into three main types based on their formation process: igneous, sedimentary, and metamorphic rocks. Igneous rocks are formed from the cooling and solidification of molten material, sedimentary rocks are formed by the accumulation and compaction of sediments, and metamorphic rocks are formed by the transformation of existing rocks under high heat and pressure.
| 3. What is the rock cycle? | |
Ans. The rock cycle is a continuous process that describes the formation, alteration, and recycling of rocks on Earth's surface. It involves three main processes: the formation of rocks through cooling and solidification (igneous rocks), the breakdown and transportation of rocks by physical and chemical weathering (sedimentary rocks), and the transformation of rocks under extreme heat and pressure (metamorphic rocks). This cycle allows rocks to change from one type to another over long periods of time.
| 4. How do rocks contribute to the Earth's surface features? | |
Ans. Rocks play a crucial role in shaping the Earth's surface features. For example, igneous rocks can form mountains and volcanic landforms when molten material erupts and solidifies. Sedimentary rocks, on the other hand, can create valleys, canyons, and coastlines through erosion and deposition processes. Metamorphic rocks can also contribute to the formation of mountain ranges through the intense pressure and heat they experience during their transformation.
| 5. What are the economic uses of rocks? | |
Ans. Rocks have various economic uses in different industries. For instance, igneous rocks such as granite and basalt are commonly used as construction materials for buildings and roads due to their durability and strength. Sedimentary rocks like limestone are used in cement and concrete production. Additionally, rocks like coal and oil shale serve as sources of energy, while precious gemstones and metals found in rocks are valuable resources for jewelry and industrial purposes.
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Nov 21, 2024 Last updated |
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