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Chapter - 1 :- Crop production and management
Chapter - 1 :- Crop production and management
1.1 Agricultural practices
1.2 Basic practices of crop production
1.3 Preparation of soil
1.4 Sowing
1.5 Adding manure and fertilisers
1.6 Irrigation
1.7 Protection from weeds
1.8 Harvesting
1.9 Storage
1.10 Food from animals
Chapter - 2 :- Microorganisms : friend and foe
Chapter - 2 :- Microorganisms : friend and foe
2.1 Microorganisms
2.2 Where do microorganisms live
2.3 Microorganisms and us
2.4 Harmful microorganisms
2.5 Food preservation
2.6 Nitrogen fixation
2.7 Nitrogen cycle
Chapter - 3 :- Synthetic fibres and plastics
Chapter - 3 :- Synthetic fibres and plastics
3.1 What are synthetic fibres
3.2 Types of synthetic fibres
3.3 Characteristics of synthetic fibres
3.4 Plastics
3.5 Plastics as materials of choice
3.6 Plastics and the environment
Chapter - 4 :- Materials : metals and non - metals
Chapter - 4 :- Materials : metals and non - metals
4.1 Physical properties of metals and non - metals
4.2 Chemical properties metals and non - metals
4.3 Uses of metals and non - metals
Chapter - 5 :- Coal and petroleum
Chapter - 5 :- Coal and petroleum
5.1 Coal
5.2 Petroleum
5.3 Natural gas
5.4 Some natural resources are limited
Chapter - 6 :- Combustion and Flame
Chapter - 6 :- Combustion and Flame
6.1 What is combustion
6.2 How do we control fire
6.3 Types of combustion
6.4 Flame
6.5 Structure of a flame
6.6 What is a fuel
6.7 Fuel efficiency
Chapter - 7 :- Conservation of plants and animals
Chapter - 7 :- Conservation of plants and animals
7.1 Deforestation and its causes
7.2 Consequences of deforestation
7.3 Conservation of forest and wildlife
7.4 Biosphere reserve
7.5 Flora and fauna
7.6 Endemic species
7.7 Wildlife sanctuary
7.8 National park
7.9 conservation of plants and animals
7.10 Migration
7.11 Recycling of paper
7.12 Reforestation
Chapter - 8 :- Cell - structure and functions
Chapter - 8 :- Cell - structure and functions
8.1 Discovery of the cell
8.2 The cell
8.3 Organism show variety in cell number , shape and size
8.4 Cell structure and function
8.5 Parts of the cell
8.6 Comparison of plant and animal cells
Chapter - 9 :- Reproduction in animals?
Chapter - 9 :- Reproduction in animals
9.1 Modes of reproduction
9.2 Sexual reproduction
9.3 Asexual reproduction
Chapter - 10 :- Reaching and age of adolescence
Chapter - 10 :- Reaching and age of adolescence
10.1 Adolescence and puberty
10.2 Changes at puberty
10.3 Secondary sexual characters
10.4 Role of Hormones in Organisms
10.5 Reproductive phase of life in humans
10.6 How is the sex of the baby determined
10.7 Hormones other than sex hormones
10.8 Role of hormones in completing the life history insects and frogs
10.9 Reproductive health
Chapter - 11 :- Force and pressure
Chapter - 11 :- Force and pressure
11.1 Force - A push or a pull
11.2 Forces are due to an interaction
11.3 Exploring forces
11.4 A force can change the state of motion
11.5 Force can change the shape of an object
11.6 What are Contact Forces and Non Contact Forces
11.7 Non - contact forces
11.8 Pressure
11.9 Pressure excerted by liquids and gases
11.10 Atmospheric pressure
Chapter - 12 :- Friction
Chapter - 12 :- Friction
12.1 Force of friction
12.2 Factors affecting friction
12.3 Friction : A necessary evil
12.4 Increasing and reducing friction
12.5 Wheels reduce friction
12.6 Fluid friction
Chapter - 13 :- Sound
Chapter - 13 :- Sound
13.1 Sound is produced by a vibrating body
13.2 Sound produced by humans
13.3 Sound needs a medium for propagation
13.4 how we hear sound through our ears?
13.5 Amplitude , Time period and frequency of a vibration
13.6 Audible and inaudible sounds
13.7 Noise and music
13.8 Noise pollution
Chapter - 14 :- Chemical effects of electric current
Chapter - 14 :- Chemical effects of electric current
14.1 Do liquids conduct electricity
14.2 Chemical Effect of Electric Current
14.3 Electroplating
Chapter - 15 :- Some natural phenomena
Some Natural Phenomena- Electric charges
15.1 Lightning
15.2 Charging by rubbing
15.3 Types of charges and their interaction
15.4 Transfer of charge
15.5 The story of lightning
15.6 Lightning safety
15.7 Earthquakes
Chapter - 16 :- Light
Chapter - 16 :- Light
16.1 What makes things visible
16.2 Laws of Refraction of Light
16.3 Regular and diffused reflection
16.4 Reflected light can be reflected again
16.5 Multiple images
16.6 Sunlight - white or coloured
16.7 What is inside our eyes
16.8 Care of the eyes
16.9 Visually impaired persons can read and write
16.10 What is the braille system
Chapter - 17 :- Stars and the solar system
Chapter - 17 :- Stars and the solar system
17.1 The moon
17.2 The stars
17.3 What are Constellations? | Pole star
17.4 The solar system
17.5 Some other members of the solar system
Chapter - 18 :- Pollution of air and water
Chapter - 18 :- Pollution of air and water
18.2 How does air get polluted
18.3 Case study - the Taj Mahal
18.4 Greenhouse effect
18.5 What can be done
18.6 Water pollution
18.7 Hoe does water get polluted
18.8 What is potable water and how is water purified
18.9 What can be done