Topics covered in the Science curriculum for CBSE Class 9:

1. Matter and its Composition:
- Introduction to matter and its characteristics
- States of matter: solid, liquid, and gas
- Physical and chemical changes
- Elements, compounds, and mixtures
- Atoms and molecules

2. Organization in the Living World:
- Basic unit of life: cell
- Tissues, organs, and organ systems
- Diversity in living organisms
- Classification of living organisms
- Introduction to plant and animal kingdom

3. Motion, Force, and Work:
- Types of motion: uniform and non-uniform
- Laws of motion by Newton
- Force and its types
- Gravitational force and its effects
- Work, energy, and power

4. Natural Resources:
- Introduction to natural resources
- Air, water, and soil pollution
- Conservation of natural resources
- Management of natural resources

5. Sound:
- Introduction to sound and its characteristics
- Production and propagation of sound
- Reflection, refraction, and echo
- Sonar and ultrasound

6. Atoms and Molecules:
- Laws of chemical combination
- Atomic structure and symbols
- Molecular and empirical formulas
- Writing and balancing chemical equations
- Types of chemical reactions

7. Diversity in Living Organisms:
- Introduction to biodiversity
- Classification of plants and animals
- Plant and animal tissues
- Plant and animal diseases
- Conservation of biodiversity

8. Force and Laws of Motion:
- Newton's laws of motion
- Force and inertia
- Momentum and its conservation
- Thrust and pressure
- Gravitational force

9. Tissues, Organs, and Systems:
- Plant tissues and their functions
- Animal tissues and their functions
- Organs and systems in plants and animals

10. Gravitation:
- Introduction to gravity and its effects
- Universal law of gravitation
- Free fall, acceleration due to gravity
- Mass and weight

11. Work and Energy:
- Introduction to work, energy, and power
- Types of energy: kinetic and potential
- Law of conservation of energy
- Different forms of energy
- Renewable and non-renewable sources of energy

12. Sound:
- Introduction to sound and its properties
- Production and propagation of sound
- Reflection, refraction, and echo
- Sonar and ultrasound

13. Structure of the Atom:
- Introduction to an atom
- Atomic number, mass number, and isotopes
- Valency and chemical bonding
- Bohr's model of an atom
- Rutherford's nuclear model

14. The Fundamental Unit of Life:
- Introduction to cells and its types
- Cell structure and functions
- Cell division: mitosis and meiosis
- Difference between plant and animal cells
- Cell organelles and their functions

15. Improvement in Food Resources:
- Introduction to food production and its challenges
- Crop production and management
- Animal husbandry
- Plant breeding and tissue culture
- Storage and preservation of food

These are the main topics covered in the Science