# NCERT Class 9 Science Chapter 13 Earth as a System: Energy, Matter, and Life Solutions: In-Text and Exercise Questions Explained | SwaVid

This document provides the questions and detailed solutions for Chapter 13, "Earth as a System: Energy, Matter, and Life," from the new rationalised NCE...

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# Earth as a System: Energy, Matter, and Life

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## Related chapters

Chapter 13 · Class 9 Science

This document provides the questions and detailed solutions for Chapter 13, "Earth as a System: Energy, Matter, and Life," from the new rationalised NCERT Class 9 Science textbook, "Exploration." The questions include both in-text queries and end-of-chapter exercises, transcribed directly from the textbook as found in reliable sources. Each solution is broken down into clear, step-by-step explanations suitable for a Class 9 student.

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In-text Questions

Answer: The warming of Arabian Sea water increases evaporation, adding more moisture to the atmosphere. This can lead to stronger and more irregular southwest monsoon winds, causing heavy rainfall and floods in some parts of India, while other areas may experience uneven or delayed rainfall and droughts.

This question connects the hydrosphere (Arabian Sea) with the atmosphere (monsoon winds) and biosphere (impact on rainfall patterns).

End-of-Chapter Exercise: Revise, Reflect, Refine (Page No. 267)

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- Warmer Arabian Sea water leads to increased evaporation from its surface.
- This increased evaporation adds more water vapour to the atmosphere.
- The additional moisture can make monsoon winds stronger or more irregular.
- Consequently, some regions in India may experience very heavy rainfall and floods, while others might face uneven or delayed rainfall, leading to drought-like conditions.
- Thus, the warming of the Arabian Sea can disturb the normal pattern of the southwest monsoon, making rainfall more uneven across India.
- NCERT Class 9 Science textbook: Exploration : Chapter 13: Earth as a System: Energy, Matter, and Life

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