9th Class Physics Notes for All Punjab Boards
Chapter 1 – Physical Quantities and Measurements
This chapter explains how we measure physical quantities accurately using standard units and instruments to ensure precision in scientific experiments.
Chapter 2 – Kinematics
Describes the motion of objects without considering its cause. Includes terms like distance, displacement, speed, velocity, acceleration, and graphical representation of motion.
Chapter 3 – Dynamics
Explains the causes of motion. Introduces Newton’s Laws of Motion, inertia, momentum, and friction. Describes how forces affect the motion of objects.
Chapter 4 – Turning Effects of Forces
Covers moments, torque, and the principle of moments. Explains equilibrium, center of gravity, and stability of objects.
Chapter 5 – Work, Energy and Power
Defines work, energy, and power. Discusses types of energy, energy transformation, law of conservation of energy, and efficiency of machines.
Chapter 6 – Mechanical Properties of Matter
Explains elasticity, stress, strain, pressure, and density. Includes Pascal’s law, atmospheric pressure, and the working of hydraulic systems.
Chapter 7 – Thermal Properties of Matter
Describes heat and temperature, expansion of solids, liquids, and gases, specific heat capacity, latent heat, and transfer of heat (conduction, convection, radiation).
Chapter 8 – Magnetism
Explains magnetic materials, magnetic field, lines of force, Earth’s magnetism, and the use of magnets in daily life and electric devices.
Chapter 9 – Nature of Science
Highlights the role of observation, experimentation, and theory in science. Explains how science, technology, and society are interconnected and how scientific knowledge develops over time.