Question 1 Name the most important source of light on Earth? Question 2 What are natural sources of light. Give example? Question 3 What are luminous objects. Give example? Question 4 What are non-luminous objects. Give example? Question 5 What are man-made sources of light. Give example? Question 6 What are transparent materials. Give examples? Question 7 … [Read more...] about Light and Shadow
transparent material
Classification of Materials
Question 1 What is the importance of oxygen gas dissolved in water? How is the carbon dioxide gas dissolved in water helpful to the plants which live in water? Question 2 What is meant by hard material and soft materials? Give examples? Question 3 What is meant by transparent material? Give 2 example? Question 4 What is meant by translucent material? Give 2 … [Read more...] about Classification of Materials