Science 2: Grade 9

Science 2: Grade 9
நூலக எண்	15096
ஆசிரியர்	-
நூல் வகை	பாட நூல்
மொழி	ஆங்கிலம்
வெளியீட்டாளர்	கல்வி வெளியீட்டுத் திணைக்களம்‎
வெளியீட்டாண்டு	2010
பக்கங்கள்	151

வாசிக்க

• Science 2: Grade 9 (80.2 MB) (PDF வடிவம்) - தரவிறக்கிக் கணினியில் வாசியுங்கள் - உதவி

உள்ளடக்கம்

• Foreword
• Properties, applications and reactions of substances
  • Evidence for the occurrence of a chemical reaction
    • Differences between chemical and physical changes
    • Evidence for a chemical reactions
  • Behaviour of atoms
    • Law of conservation of mass
    • Dalton's Atomic Theory
    • Recent discoveries about the atom
  • Using chemical symbols
    • Development of the use of symbols in Chemistry
    • International Coventions
    • Importance of using symbols
  • Reactions of metals and non-metals with air, water,acids and bases
  • Alloys and their Uses
    • What are alloys
    • Common alloys, their properties, characteristics and uses
  • Identification of nutrients in food
    • Major types of nutrients
  • Criteria for identifying the quality of cobsumer goods
  • Composite materials
    • Classification of composites
    • Uses of Composites
  • Properties and uses of polymers
    • Monomers and polymers
    • Natural and artificial polymers
    • Problems and solutions associated with the use of artificial polymers
  • Preparation of solutions to suit the requirements
    • Mixtures
    • Solutions
    • Various Solvents
  • ways of generating electricity
    • Structure and function of electric cells
    • Electricity Generators
    • Bicycle dynamo
  • Uses of Nanotechnology
    • Concept of Nanoterchnology
    • Uses of nanotechnology
    • Advers effects of nanotechnology
• Diversity of flowers
  • Morphological diversist of flowers
    • Parts of a flower and their arrangement
  • Structure of flower
  • Inflorescence
    • Racemose inflorescences
    • Cymose Inflorescenses
  • Diversity of fruits
    • Simple fruits
    • Aggregate fruits
    • Composite fruits
  • Dispearsal of fruits and seeds
    • Dispersal by wind
    • Dispearsal by water
    • Dispersal by animals
    • Dispearsal by explosive mechanisms
  • Diversity in plant habit
    • Annuals
    • Biennials
    • Perennials
    • Uses of plants to humans
• Light and Sound
  • Behaviour of light
    • Reflection of light
    • Refraction of light
  • Behaviour of sound
    • Reflection
    • Echo
    • Reverberation
    • Absorption of sound
    • Resonance
    • Musical sound and Noise
• Marvels in the world of animals
  • Marvels in the world of animals
    • Animals that exhibit mysterious characters
• Management of natural disasters and associated risks
  • Risk condition associated with drought
    • Drought
    • Drought forecasting
    • Scientify reasons which bring about drought
    • Effects of drought
    • Management of drought disasters
    • Effect of drought to srilanka
  • Minimizing the effects of Tsunami