Science 2: Grade 9
நூலகம் இல் இருந்து
Pilogini (பேச்சு | பங்களிப்புகள்) பயனரால் செய்யப்பட்ட 04:16, 3 டிசம்பர் 2015 அன்றிருந்தவாரான திருத்தம்
Science 2: Grade 9 | |
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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
- Evidence for the occurrence of a chemical reaction
- 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
- Morphological diversist of flowers
- 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
- Behaviour of light
- Marvels in the world of animals
- Marvels in the world of animals
- Animals that exhibit mysterious characters
- Marvels in the world of animals
- 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
- Risk condition associated with drought