Question

Encircle the odd one out and give reasons for your choice.

Heat, light, sound, moon, electricity

Answer 1

Moon.

1. Electric bulb, sun and fire are luminous objects while moon is non-luminous object.
2. Objects that can emit light energy by themselves are known as luminous objects.
3. Objects that cannot emit light energy by themselves are known as non-luminous objects. These objects can cause a sensation of light.