3. INTERIOR OF THE EARTH
The chapter delves into the nature of the Earth's interior, emphasizing how indirect evidence aids our understanding of its structure due to the impossibility of direct observation. It discusses various sources of information about the Earth's layers, including seismic activity, volcanic eruptions, and gravitation. The importance of understanding earthquakes and their impact on the Earth's surface is also highlighted, alongside a detailed explanation of different types of volcanoes and volcanic landforms.
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Sections
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What we have learnt
- Most knowledge about the Earth's interior comes from indirect evidence.
- Seismic activity provides crucial information about the Earth's layers.
- Volcanic eruptions offer a direct source of information about the Earth's materials.
Key Concepts
- -- Seismic Waves
- Energy waves generated by the release of energy during earthquakes, traveling through the Earth.
- -- Lithosphere
- The rigid outer layer of the Earth, consisting of the crust and the upper mantle.
- -- Volcano
- An opening in the Earth's surface through which gases, ash, and molten rock can escape.
- -- Shadow Zone
- Areas where seismic waves are not detected, indicating different properties of the Earth's interior.
Additional Learning Materials
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