Light is reflected refracted or absorbed.
Later the course covers color and goes on to x-rays. It is at this point that the description of x-rays requires a further designation than light. If light is imagined as a flow of particles, the particles are called photons with each photon carrying a discrete packet of energy. For a beam of fixed energy photons, the intensity of the beam depends the number of photons per second. Light can also be described as waves with the distance between waves, the wavelength, inversely proportional to energy.