NCERT Alternatives to own Classification six Technology Section eleven White Shadows and you may Reflection
dos. Classify the newest objects or content here as the opaque, clear or transparent and you may luminous or non-luminous: Sky, liquid, a piece of rock, a piece regarding aluminium, a mirror, a wood board, a piece out of polythene, an excellent Cd, tobacco cigarette, a sheet of flat cup, fog, a bit of red hot iron, an umbrella, a good illuminated neon pipe, a wall surface, a sheet out of carbon dioxide paper, the fresh fame from a petrol burner, a sheet off cardboard, a beneficial lighted torch, a layer off cellophane, a cable interlock, kerosene stove, sunlight, firefly, moonlight. (більше…)