Class IX: Science (विज्ञान)
Class IX Science
Textbooks/पाठ्यपुस्तक:
Reference Video/सन्दर्भ विडियो:
Khan Academy Videos:
Distance and displacement
Average speed and average velocity
Instantaneous speed and velocity
Acceleration
Position time graphs
Velocity time graphs
Deriving equations of motion
Problem solving using kinematic equations
Uniform circular motion
Textbooks/पाठ्यपुस्तक:
Reference Video/सन्दर्भ विडियो:
Khan Academy Videos:
Newton's first law & unbalanced forces
Newton's second law & Inertia
Newton's third law
Momentum and force
Conservation of momentum
Textbooks/पाठ्यपुस्तक:
Reference Video/सन्दर्भ विडियो:
Khan Academy Videos:
Universal law of gravity
Free fall & Acceleration due to gravity
Motion of objects in the influence of gravitational force of earth
Thrust & pressure
Pressure in liquids & Archimedes principle
Density and condition for floating
Relative density
Textbooks/पाठ्यपुस्तक:
Reference Video/सन्दर्भ विडियो:
Khan Academy Videos:
Work
Energy
Work energy theorem
Law of conservation of energy
Power
Commercial unit of energy
Textbooks/पाठ्यपुस्तक:
Reference Video/सन्दर्भ विडियो:
Khan Academy Videos:
Production, propagation & properties of sound
Longitudinal waves & speed of sound
Reflections, echoes, and reverberation
Ultrasound
Structure of human ear
