Classify the objects or materials given below as opaque, transparent or translucent and luminous or non-luminous:
Air, water, a piece of rock, a sheet of plain glass, a piece of red-hot iron, an umbrella, a wall, Sun, firefly, moon, wax paper, dusty window glass.

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Solution

Opaque: A piece of rock, an umbrella, a wall.
(0.5 Mark )
Transparent: Air, water, a sheet of plane glass.
(0.5 Mark )
Translucent: Wax paper, dusty window glass.
(0.5 Mark )
Luminous: A piece of red-hot iron, Sun, firefly.
(0.5 Mark )

Non-luminous: Air, water, a piece of rock, a sheet of plane glass, an umbrella, a wall, wax paper, dusty window glass.
(0.5 Mark )

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Classify the objects or materials given below as opaque, transparent or translucent and luminous or non-luminous: Air, water, a piece of rock, a sheet of plain glass, a piece of red-hot iron, an umbrella, a wall, Sun, firefly, moon, wax paper, dusty window glass.

Classify the objects or materials given below as opaque, transparent or translucent and luminous or non-luminous:
Air, water, a piece of rock, a sheet of plain glass, a piece of red-hot iron, an umbrella, a wall, Sun, firefly, moon, wax paper, dusty window glass.