# Physics - Class IX Resources

The following list of online resources are provided as a sample of curated resources. New resources shall be added as we come across interesting and relevant online materials.

#### 1. Distance, Displacement, Speed, and Velocity

Description: Explanation on the concept of distance, displacement, speed, and velocity.

Core Concepts: Forces and acceleration: Distance, displacement, speed, and velocity.

#### 2. What is Velocity?

Description: Explanation of velocity and calculations related to velocity.

Core Concepts: Forces and acceleration: Velocity and its calculation.

#### 3. Physics- What is Acceleration?

Description: Explanation of acceleration, mathematical representation, and calculation related to acceleration.

Core Concepts: Forces and acceleration: Acceleration and its calculation.

#### 4. Distance Time Graph and Velocity Time Graph

Description: Interpretation of distance-time graph and velocity-time graph.

Core Concepts: Forces and acceleration: Graphical representation of distance-time graph and velocity-time graph

#### 5. Simulation on Forces and Motion

Description: Interactive simulation on the concept of balance, unbalanced, and resultant forces.

Core Concepts: Balanced and unbalanced forces.

#### 6. What is Momentum? Forces and Laws of Motion.

Description: Concept of forces and momentum, mathematical representation, and application.

Core Concepts: Momentum of a body.

#### 7. Equations of Motion

Description: Explanation of equations of linear motion.

Core Concepts: Equations of linear motion.

#### 8. Equations of Motion

Description: Derivation and application of equations of motion.

Core Concepts: Equations of linear motion.

#### 9. Newton’s First Law of Motion: Mass and Inertia

Description: Explanation of the concept of law of inertia and its application.

Core Concepts: Newton’s first law of motion.

#### 10. Newton’s First Law of Motion

Description: Explanation of Newton’s first law of motion.

Core Concepts: Newton’s first law of motion.

#### 11. Experimental Verification of Newton’s Second Law of Motion

Description: The concept, practical demonstration, calculation, and experimental verification of Newton’s second law of motion .

Core Concepts: Newton’s second law of motion.

#### 12. Verification of Newton’s Second Law

Description: Interactive simulation to verify Newton’s second law of motion.

Core Concepts: Newton’s second law of motion.

#### 13. Newton's Third Law of Motion: Action and Reaction

Description: Explanation of the Newton’s third law of motion.

Core Concepts: Newton’s third law of motion.

#### 14. How to Make a High Speed Water Boat using DC Motor

Description: Procedures on construction of a water boat using a DC motor based on Newton's third of motion .

Core Concepts: Newton’s third law of motion.

#### 15. Liquid Pressure

Description: Interactive simulation to explain the factors affecting liquid pressure.

Core Concepts: Pressure inside a liquid.

#### 16. What is Buoyancy?

Description: Explanation on the concept of buoyancy.

Core Concepts: Buoyant force: Up thrust.

#### 17. What is the Archimedes’ Principle?

Description: Explanation of Archimedes principle.

Core Concepts: Buoyant force: Archimedes' principle.

#### 18. Archimedes’ Principle

Description: Explanation, verification and application of Archimedes’ principle.

Core Concepts: Buoyant force: Archimedes' principle.

#### 19. What is Relative Density?

Description: Explanation of relative density.

Core Concepts: Buoyant force: Archimedes' principle.

#### 20. Verification of Archimedes’ Principle

Description: Interactive simulation to verify Archimedes' principle.

Core Concepts: Buoyant force: Archimedes' principle.

#### 21. Converting between Temperature Scales (Celsius, Fahrenheit and Kelvin)

Description: Method to convert the temperature from Celsius to Fahrenheit and kelvin scale.

Core Concepts: Heat and Temperature: Measurement of temperature.

#### 22. Thermal Insulation

Description: Explanation of  basic concepts on thermal insulation.

Core Concepts: Energy transfer: Thermal insulation.

#### 23. Specific Heat Capacity Explained

Description: The video contains the concept, formula of heat gained/lost and applications of specific heat capacity.

Core Concepts: Energy transfer: Specific heat capacity.

#### 24. Specific Heat Capacity

Description: Explanation of specific heat capacity.

Core Concepts: Energy transfer: Specific heat capacity.

#### 25. Latent Heat: Chemistry

Description: Explanation of latent heat of fusion and latent heat of vaporization, examples and applications.

Core Concepts: Energy transfer: Latent heat.

#### 26. Circuit Construction Kits

Description: Interactive simulation to construct  a circuit to demonstrate direction of flow of charge and conventional current.

Core Concepts: Electric current.

#### 27. Circuit Construction Kits

Description: Interactive simulation to construct a circuit using ac and dc source to study their properties graphically.

Core Concepts: Alternating current and direct current.

#### 28. Difference between AC and DC Explained

Description: Explanation of differences between AC and DC with graphical representation.

Core Concepts: Alternating current and direct current.

Description: Interactive simulation on demonstration of  Faraday’s law of electromagnetic induction.

Core Concepts: Electromagnetic induction.

#### 30. What is Electromagnetic Induction?

Description: Explanation and demonstration of electromagnetic induction.

Core Concepts: Electromagnetic induction.

#### 31. Lenz Law

Description: Demonstration on Lenz’s Law.

Core Concepts: Electromagnetic induction.

#### 32. The Lorentz Force

Description: Demonstration on Lorentz force.

Core Concepts: Electromagnetic induction and D.C motor.

#### 33. Build a Simple Electric Motor

Description:  Procedure to o build a simple D.C motor based on the concept of electromagnetic induction.

Core Concepts: Electromagnetic induction and D.C motor.

#### 34. Bending Light

Description: Interactive simulation to show the bending of light when it travels from one medium to the other by altering the angle of incidence.

Core Concepts: Refraction of light.

#### 35. Refraction of Light

Description: This  video contains the concepts and demonstration on refraction of light.

Core Concepts: Refraction of light.

#### 36. Laws of Refraction of Light

Description: Explanation of  laws of refraction of light and the refractive index.

Core Concepts: Refraction of light.

#### 37. Total Internal Reflection - Critical Angle

Description: Explanation of critical angle and total internal reflection.

Core Concepts: Total internal reflection.

#### 38. Total Internal Reflection Demo

Description: Demonstration of total internal reflection using a water tank.

Core Concepts: Total internal reflection.

#### 39. Mirage an Optical Illusion

Description: Formation of optical illusion in desert.

Core Concepts: Total internal reflection.

#### 40. Effects of Total Internal Reflection

Description: Natural consequences and effects of total internal reflection.

Core Concepts: Total internal reflection.

#### 41. Different Types of Waves: Longitudinal and Mechanical

Description: Explanation of different types of waves.

Core Concepts: Types of waves.

#### 42. Types of Waves, Frequency Amplitude and Sound Waves

Description: Explanation of terms used to describe waves (frequency, amplitude, time period, wavelength, and wave velocity).

Core Concepts: Characteristics of waves.

#### 43. Longitudinal and Transverse Wave Basics

Description: Interactive simulation to demonstrate longitudinal and transverse waves.

Core Concepts: Characteristics of waves.

#### 44. Wave on a String

Description: Interactive simulation to demonstrate using a waves.

Core Concepts: Characteristics of waves.

#### 45. How Ultrasound Works

Description: Explanation on working of ultrasound.

Core Concepts: Uses of wave.

#### 46. Sonar, How Sonar Works in Submarine

Description: Explanation of working of sonar.

Core Concepts: Uses of wave.

#### 47. Radar and Doppler Effect

Description: Explanation on working of RADAR.

Core Concepts: Uses of wave.

#### 48. Relative Positions

Description: Explanation of relative position of moon.

Core Concepts: Physical and chemical properties of the Moon and its environment. 