Class 8 Science Chapter 5 PDF: Exploring Forces (Curiosity)

Class 8 Science Chapter 5, Exploring Forces, rides along with Sonali and Ragini cycling against the wind and up a hill to explain what a force is, contact and non-contact forces, weight and spring balances, and why objects float or sink.

What Class 8 Science Chapter 5 Covers

5.1 to 5.3 What Is a Force and What Can It Do? define force as a push or pull arising from interaction between two or more objects, and show how forces change speed, direction of motion or shape.

5.4 What Are the Different Types of Forces? covers contact forces (muscular force and friction) and non-contact forces (magnetic, electrostatic and gravitational force) through Activities 5.3 to 5.8.

5.5 Weight and Its Measurement and 5.6 Floating and Sinking distinguish weight as the gravitational pull of the Earth, measure weight and least count with a spring balance (Activities 5.9 to 5.12), and investigate buoyant force in liquids (Activity 5.13).

Exercises in Chapter 5

• Keep the curiosity alive end-of-chapter questions and reasoning exercises.
• Discover, design, and debate and Projects for hands-on investigation.

Read Class 8 Science Chapter 5 Online

More Chapters

• Previous: Chapter 4: Electricity: Magnetic and Heating Effects
• Next: Chapter 6: Pressure, Winds, Storms, and Cyclones
• Hindi medium: Class 8 Science Chapter 5 PDF in Hindi (Jigyasa)
• All Science chapters and the other Class 8 books: Class 8 NCERT books 2026-27
• All Class 1 to 12 NCERT Textbooks: NCERT Books PDF (Class 1–12)
• Every book chapter by chapter: NCERT chapter wise PDF

FAQ

What are the types of forces in Class 8 Science Chapter 5?
Contact forces (muscular force, friction) and non-contact forces (gravitational, magnetic and electrostatic forces).

How is weight measured in Chapter 5?
Using a spring balance, which measures the gravitational pull of the Earth on an object.

Updated 2026–27 NCERT Class 8 Books & Chapter-Wise PDFs

Looking for all chapters and the latest 2026–27 NCF NCERT textbooks for Class 8? Open any chapter below to download its official PDF or read our Read Online & Notes study guide, or visit the complete NCERT Class 8 Books PDF (2026–27 Main Page) for all subjects or All NCERT Books PDF (Class 1 to 12).