Nature’s Treasures | Class 6 Science Notes

11.3 Energy from the Sun

The Sun is the primary source of energy for all life on Earth. It provides heat and light that support various natural processes and human activities. Plants use sunlight to prepare food through photosynthesis, which forms the base of the food chain. Animals and humans obtain energy by consuming plants or other animals. The Sun's energy is also used for drying food items like chillies and clothes, heating water, and generating electricity through solar panels. Solar energy is clean, renewable, and abundant. Solar cookers and solar water heaters are examples of devices that use the Sun's energy directly. Without sunlight, life would be severely affected; plants would not grow, animals would lack food, and humans would need artificial lighting and heating. The Sun's energy thus sustains ecosystems and human life. Many cultures express gratitude to the Sun, such as offering water to the Sun in the morning. Solar panels installed on rooftops, street lights, and traffic signals capture solar energy to produce electricity, reducing dependence on fossil fuels and pollution.

📊 Diagram: Images show drying of chillies in the Sun, plants making food, solar panels on rooftops, and a cow grazing in sunlight illustrating the energy flow from the Sun to plants and animals.

🔗 Connection: This section leads to the next section on forests, which are rich ecosystems dependent on sunlight and natural resources.