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Volcanoes Video Lecture | Famous Books for UPSC Exam (Summary & Tests)
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FAQs on Volcanoes Video Lecture - Famous Books for UPSC Exam (Summary & Tests)
| 1. What causes volcanic eruptions? |  |
Ans. Volcanic eruptions are caused by the movement of tectonic plates. When these plates move, they create pressure beneath the Earth's crust, causing magma to rise to the surface. The pressure builds up until it's strong enough to break through the Earth's crust, resulting in an eruption.
| 2. Can volcanic eruptions be predicted? | |
Ans. Yes, volcanic eruptions can be predicted to some extent. Scientists use a variety of tools and techniques to monitor volcanoes and look for signs of an impending eruption. These signs include increased seismic activity, changes in gas emissions, and changes in the shape of the volcano. However, predicting the exact timing and magnitude of an eruption is still challenging.
| 3. What are the different types of volcanoes? | |
Ans. There are three main types of volcanoes: shield volcanoes, cinder cone volcanoes, and composite volcanoes. Shield volcanoes are the largest and have gentle slopes. Cinder cone volcanoes are small and have steep slopes. Composite volcanoes are the most explosive and have steep sides with a wide base.
| 4. What are the effects of volcanic eruptions? | |
Ans. The effects of volcanic eruptions can be widespread and devastating. They can cause ashfall, which can damage buildings, agriculture, and infrastructure. They can also cause pyroclastic flows, which are fast-moving clouds of hot ash and rock that can destroy everything in their path. Volcanic eruptions can also lead to tsunamis, earthquakes, and mudslides.
| 5. Can volcanic eruptions be beneficial? | |
Ans. Yes, volcanic eruptions can be beneficial in some ways. Volcanic ash is rich in nutrients and can help fertilize soil, making it more fertile for agriculture. Volcanic eruptions can also create new land, such as islands, and can help shape the landscape over time. Additionally, volcanic activity can create geothermal energy, which can be harnessed for electricity.
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