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Shaping of the Earth's Surface
Social Science (2026-27) · CBSE Class 9 · English Medium · 19 questions and answers
Sample questions
- Q: Name the three layers of the Earth based on composition.
- A: The crust, the mantle and the core.
- Q: What is the crust?
- A: The crust is the thin, solid outermost layer of the Earth, on which we live and where all landforms are found.
- Q: What is the lithosphere?
- A: The lithosphere is the hard, rigid outer shell of the Earth made of the crust and the upper part of the mantle; it is broken into tectonic plates.
- Q: What is the asthenosphere?
- A: The asthenosphere is the soft, partly molten layer below the lithosphere over which the tectonic plates slowly move.
- Q: What does the theory of plate tectonics state?
- A: It states that the Earth's rigid outer layer is broken into large plates that slowly move over the asthenosphere, causing mountains, earthquakes and volcanoes.
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