Physics

This chapter covers topics such as A Force Can Change the State of Motion, Contact Forces, Exploring Forces, Force - A Push or a Pull, Pressure Exerted by Liquids and Gases, Non-contact Forces, Pressure, etc.

This chapter covers topics such as Fluid Friction, Increasing and Reducing Friction, Force of Friction, Friction : A Necessary Evil, Factors Affecting Friction, etc.

This chapter covers topics such as Amplitude, Time Period and Frequency of a Vibration, Noise and Music, Noise Pollution, Sound Needs a Medium for Propagation, Sound Is Produced by a Vibrating Body, We Hear Sound Through Our Ears, etc.

This chapter covers topics such as Electroplating, Liquids Conduct Electricity, Chemical Effects of Electric Current, etc.

This chapter covers topics such as Charge, Earthquake, Lightning, Charging by Rubbing, Sparks and Electric Charges, etc.

This chapter covers topics such as Braille System, Laws of Reflection, Reflected Light Can be Reflected Again, Multiple Images, Regular and Diffused Reflection, Inside Our Eyes, Care of Eyes, Sunlight - White or Coloured, etc.

This chapter covers topics such as The Moon, Solar System, The Stars and Constellations, etc.