Question

1. how does density impact the speed of light waves?

Explanation:

The speed of light waves decreases as the density of the medium increases. This is because in a denser medium, there are more particles for the light to interact with. Light is an electromagnetic wave, and as it passes through a medium, it causes the electrons in the atoms of the medium to vibrate. This interaction slows down the propagation of the wave. For example, light travels slower in water (denser) than in air (less - dense).

Answer:

The speed of light waves decreases with an increase in the density of the medium.