Science 1: Grade 9

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Science 1: Grade 9 (45.7 MB) (PDF வடிவம்) - தரவிறக்கிக் கணினியில் வாசியுங்கள் - உதவி

Foreword
Scientific investigation of the environment
- Scientific method
- Observe minute objects
  - Use of the optical microscope
- Importance of micro-organisms
  - Applications of microbial
- Importance of micro - organisms
  - Applications of microbial activity
  - Harmful effects of micro-organisms
- Using laboratory equipment appropriately
  - Volumetric equipment
  - Instruments to measure mass / weight
  - Instruments to measure quantities related to electricity
  - Other laboratory equipment
Nature of the Earth and space
- Views about the solar system
- Identifying star patterns
- Ezistence of stars and Galaxies
Energy, Work and force
- Linear motion
- Methods used to facilitate work
  - Machines used in building construction
  - Machines associated with repairing motor vehicles
  - Machines associated with agriculture
- Quality and quantity of the energy resources
  - Primary energy soures
  - Secondary energy sources
  - Conversion of Primary Energy Resources to Secondary Energy Resources
- Use of alternative energy resources as a solution to the energy crisis

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