8th Physics | Sreeja


Force and Pressure (Recap of concepts of force learned last year, detailed discussions of pressure)

  • Force
  • Effects of force
  • Contact forces
  • Non-contact forces
  • Pressure
  • Atmospheric pressure

Weather and climate (As an application of force and pressure)

  • Wind
  • Cyclones and storms


Simple machines (As an application of energy, work and force )

  • Identifying simple machines in a compound machine (eg: sewing machine, mixer, grinder etc)
  • Demonstration and description of mechanical advantage


States of matter

  • Recap of different states of matter that is observed in nature
  • States of matter such as plasma which is there in stars
  • 'Where does matter come from??' leading to the discussion of next chapter.

Star formation and planet formation (Discussion of origin of everything we see)

  • Life cycle of stars
  • Accretion disk model of planet formation

Seasons on earth

  • What made life possible on earth unlike other planets?
  • Cause of seasons on earth
  • Seasons on other planets in solar system


Properties of matter

  • Solids
  • Cohesive force
  • Arrangement of molecules
  • Liquids
  • Liquids
  • Surface tension
  • meniscus
  • Conduction and Convection
  • Fluid pressure
  • Archimedes principle
  • Gases
  • Atmospheric pressure
  • Vacuum
  • Vacuum pump
  • Lift pump

October, November


  • Force of Friction
  • Factors affecting friction
  • Friction - necessary evil
  • Ways of increasing and reducing friction


  • Sound produced by vibration
  • Sound needs a medium for propagation
  • Human ear
  • Amplitude and frequency
  • Loudness and pitch
  • Infrasonic and ultrasonic sounds
  • Noise and music
  • Noise pollution


Static electricity

  • Charged atoms
  • The electroscope
  • Induction of charges
  • Electrical conductors and insulators
  • Lightning
  • Applications of static electricity


Structure of earth

  • Composition of different layers
  • Earth’s magnetism
  • Natural phenomena (lightning, earthquake, volcanoes)



  • Laws of reflection
  • Reflection and vision
  • Irregular reflection
  • Convex and concave mirrors - image formation
  • Pinhole camera with ray diagram
  • Refraction (qualitative)
  • Dispersion
  • Ray diagram (Optional : only to those who are interested)


  • Revision
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