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)
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.