Physics

This chapter covers topics like renewable sources of energy, non-renewable sources of energy, and conservation of energy.

This chapter explains the differences between magnetic and non-magnetic substances along with their characteristics and properties. It discusses the magnetic field around a magnet, permanent and temporary magnets, and their uses.

This chapter covers topics like stars, galaxy, constellations, the solar system, and artificial satellites.

This chapter defines matter and discusses its composition. We will learn in detail the different states of matter, that is solids, liquids and gases. It also describes the characteristics and properties of solids, liquids and gases.

The chapter highlights the measurement of density of irregular solids using a Eureka can and a measuring cylinder. We will also learn about relative density, floating and sinking of materials in a liquid, and density of the 3 states of matter.

This chapter describes the moment of a force. It deals with the units and applications of pressure. It includes the characteristics and consequences of liquid pressure. We will also learn about atmospheric pressure and simple barometer.

This chapter explains the concepts of work, energy, and power. It also teaches us about energy conversions. Furthermore, it includes some formulas and results to solve the questions on work done.

The chapter discusses ray diagrams and construction of images. It covers terms related to spherical mirrors. It describes the images formed by concave and convex mirrors. It also explores refraction and dispersion of light and the laws of refraction.

This chapter comprises the details of loudness, pitch and quality of sound. It describes the musical instruments which include wind instruments, stringed instruments and the percussion instruments. We will also learn about the unit of loudness.

The chapter covers the concept of static electricity. It discusses the behavior of electric charges, conductors and insulators. We will also learn about electricity at home, electrical hazards and safety devices in electrical connections.

The chapter discusses evaporation and boiling. It describes thermal expansion and its various types. We will also learn about the thermal expansion of solids, liquids and gases.