Question

A light wave from the sun shines through the atmosphere, into the window of a house, and through a plastic fish tank. In which of the following

mediums would the light waves travel the fastest?
The plastic fish tank
The air in the atmosphere
The glass in the window
The water in the fish tank

Answer 1

The air in the atmosphere.

Step-by-step explanation:

Light travels the fastest in Air. The speed of light in air is estimated to be about 3/10-8 m/s.