A smooth surface reflects light evenly, creating clear images like in mirrors. A rough surface scatters light in different directions, so no clear image forms. This is why polished metal reflects better than paper or stone. Class 8 Science Curiosity Grade ...
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Corrective glasses use lenses to bend light rays so they focus properly on the retina. For nearsighted or farsighted people, glasses adjust how light enters the eyes, helping form clear images instead of blurry ones. Class 8 Science Curiosity Grade 8 ...
Water, air and sunlight are essential for life. Sunlight powers photosynthesis, air provides oxygen and carbon dioxide and water supports growth and transport. Together, they help plants, animals and microbes survive and keep ecosystems balanced. Class 8 Science Curiosity Textbook Chapter ...
Ecosystems support life by providing food, water, air, shelter and balance. Each organism—plants, animals, microbes—plays a role in recycling nutrients, maintaining climate and sustaining life cycles essential for survival on Earth. Class 8 Science Curiosity Textbook Chapter 1 Exploring the Investigative ...
Living organisms interact constantly with air, water, sunlight, soil and other organisms. These relationships include food chains, shelter, reproduction and competition, forming a balanced system called an ecosystem that supports life on Earth. class 8 science chapter 1 exploring the investigative ...