Class 9 Science

Distance, displacement, speed, velocity and acceleration, and how to read motion graphs.

Newton's three laws of motion, inertia, momentum and conservation of momentum.

Universal gravitation, free fall, weight and mass, and the difference between the two.

Work, kinetic and potential energy, power, and the law of conservation of energy.

How sound travels, its speed, reflection and echo, and how we hear it.

States of matter, change of state, evaporation and the particle nature of matter.

Mixtures vs pure substances, solutions, colloids and suspensions, and physical vs chemical change.

Laws of chemical combination, atomic mass, molecules, ions and chemical formulae.

Electrons, protons and neutrons, atomic models, and how electrons are arranged in shells.

The cell as the basic unit of life — cell structure, organelles and the cell membrane.

Plant and animal tissues — what they're made of and the job each one does.

Improving crop yields, animal husbandry, and sustainable food production.