| Units | Unit Name | Marks |
| i | Matter- Its Nature and Behaviour | 27 |
| ii | Organization in the Living World | 26 |
| iii | Motion, Force and Work | 27 |
| Total | 80 | |
| Internal Assessment | 20 | |
| Grand Total | 100 |
Deleted Portion of Science Syllabus 2020-2021
Unit-1-Matter- Its Nature and Behaviour
CHAPTER- MATTER IN OUR SURROUNDINGS
Definition of matter; solid, liquid and gas; characteristics -shape, volume, density; change of state melting (absorption of heat), freezing, evaporation (cooling by evaporation), condensation, sublimation.
Unit-2-Organization in the Living World
CHAPTER- DIVERSITY IN LIVING ORGANISMS
1.Diversity of plants and animals-basic issues in scientific naming, basis of classification.
2.Hierarchy of categories / groups, Major groups of plants (salient features) (Bacteria, Thallophyta, Bryophyta, Pteridophyta, Gymnosperms and Angiosperms).
3.Major groups of animals (salient features) (Non-chordates up to phyla and ch classes).
Unit-3-Motion, Force and Work, Sound
CHAPTER- Motion, Force and Work
1.Flotation: Thrust and Pressure.
2.Archimedes’ Principle; Buoyancy; Elementary idea of Relative Density.
CHAPTER- SOUND
Nature of sound and its propagation in various media, speed of sound, range of hearing in humans; ultrasound; reflection of sound; echo and SONAR.
Unit-4-Our Environment
CHAPTER- Our Environment
1.Physical resources: Air, Water, Soil. Air for respiration, for combustion, for moderating temperatures; the movement of air and its role in bringing rains across India.
2.Air, water and soil pollution (brief introduction). Holes in the ozone layer and the probable damages.
3.Biogeochemical cycles in nature: Water, Oxygen, Carbon and Nitrogen.
Unit-5-Food Production
CHAPTER-FOOD PRODUCTION
Improvement in Food Resources: Plant and animal breeding and selection for quality improvement and management; Use of fertilizers and manures; Protection from pests and diseases; Organic farming.