1. Refraction:

* Bending of light: Light bends as it passes from air (or any other medium) into the glass. This is because light travels at different speeds in different mediums. The speed of light is slower in glass than in air. The amount of bending depends on the angle at which the light enters the glass and the difference in refractive indices between air and glass.

* Change in direction: The light ray changes direction, bending towards the normal (an imaginary line perpendicular to the surface of the glass) if the light enters from a less dense medium (air) to a denser medium (glass).

2. Reflection:

* Some light bounces back: A small portion of the light will be reflected off the surface of the glass, just like a mirror reflects light. This is why you can see your reflection in a window.

* Angle of reflection: The angle at which the light reflects is equal to the angle at which it hits the surface.

3. Absorption:

* Energy loss: A small amount of light energy is absorbed by the glass molecules as the light passes through. This absorption is what gives glass its color; clear glass absorbs less visible light than colored glass.

4. Transmission:

* Passing through: The majority of the light that is not reflected or absorbed will pass through the glass block and continue on its way.

Overall:

The interaction of light with a glass block involves a combination of refraction, reflection, absorption, and transmission. The relative amounts of each depend on the properties of the glass, the angle of incidence, and the wavelength of the light.