What are two ways in which light behaves?

Light is an interesting case in that it can behave as both a wave, and a particle.

More specifically, light behaves as a wave when it is traveling through space. Light can actually travel at a number of different wavelengths which fall in to various categories of what is known as the electromagnetic spectrum, with the visible light we see actually falling in a very small range of the total spectrum. 

Light...

Light is an interesting case in that it can behave as both a wave, and a particle.

More specifically, light behaves as a wave when it is traveling through space. Light can actually travel at a number of different wavelengths which fall in to various categories of what is known as the electromagnetic spectrum, with the visible light we see actually falling in a very small range of the total spectrum. 

Light can also act like a particle. It does so by carrying small amounts of energy known as quanta. This behavior of light was determined by the discovery of the photoelectric effect. A good example of light energy at work as a particle is in the process of photosynthesis. In this biological process, light provides the energy necessary for the chemical reactions of photosynthesis to take place. Hope this helps!