Topics
Natural Resources – Air, Water and Land
- Natural Resources
- Atmosphere and Its Layers
- Air Around Us
- Composition and Components of Air
- Importance of Air
- Air Pollution and Its Causes
- Water: Our Lifeline
- Availability of Water
- Composition of Water
- Importance of Water
- Scarcity of Water
- Land
- Soil Formation
- The Importance of Conserving Earth’s Natural Resources
The Living World
Diversity in Living Things and Their Classification
Disaster Management
Substances in the Surroundings –Their States and Properties
Substances in Daily Use
Nutrition and Diet
- Nutrients and Nutrition
- Component of Food
- Carbohydrates
- Diseases Due to Deficiency of Carbohydrates
- Fats (Lipids)
- Diseases Due to Deficiency of Fats
- Proteins
- Diseases Due to Deficiency of Proteins
- Vitamin and Minerals
- Diseases Due to Deficiency of Vitamin
- Diseases Due to Deficiency of Minerals
- Fibre
- Diseases Due to Deficiency of Fibre
- Water
- Diseases Due to Deficiency of Water
- A Balanced Diet
- Nourishment and Malnutrition
- Food Adulteration
Our Skeletal System and the Skin
Motion and Types of Motion
Force and Types of Force
Work and Energy
- Force, displacement and work
- Energy
- The relationship between work and energy
- Forms of Energy
- Mechanical Energy
- Heat Energy (Thermal Energy)
- Light Energy
- Sound energy
- Chemical Energy
- Transformation of Energy
- Energy Resources
- Conventional energy resources or non-renewable energy resources
- Non-conventional energy resources or renewable energy resources
- Energy saving and green energy
Simple Machines
Sound
Light and the Formation of Shadows
Fun with Magnets
The Universe
The Universe:
The universe is a large space that contains everything we know, such as stars, planets, and galaxies.
- It contains our Earth, the Sun, and all the other planets. The universe is enormous and continues to expand.
- The universe contains many stars and planets, many of which we cannot see with our eyes.
- A group of innumerable stars and their planetary systems is together known as a ‘galaxy.’
- The Milky Way is the galaxy in which our solar system is located. The Milky Way is part of the ‘Local Group’ of galaxies. There are many such galaxies in the universe.
- Everything around us, from the tiniest particles to the largest galaxies, is part of the universe.
- The galaxy that is closest to our Milky Way is called Andromeda.
The Milky Way
The Andromeda galaxy
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Related QuestionsVIEW ALL [37]
Match the following
| Column A | Column B | |
| a) | Atavism | caudal vertebrae and vermiform appendix |
| b) | Vestigial organs | a forelimb of a cat and a bat’s wing |
| c) | Analogous organs | rudimentary tail and thick hair on the body |
| d) | Homologous organs | a wing of a bat and a wing of an insect |
| e) | Wood park | radiocarbon dating |
| f) | W.F. Libby | Thiruvakkarai |
