Question

gamma waves are extremely powerful, and have the most energy of all the waves in the electromagnetic spectrum. they are used to fight types of cancer. another type of wave is x - rays. these easily pass through skin, but not bones. ultraviolet waves are also found on the spectrum. humans cant see ultraviolet waves. however, some insects and animals can. infrared waves cant be seen by humans either, but when they are absorbed, their energy is changed to heat. microwaves are the energy waves that heat food in microwave ovens. furthermore, radio waves are another kind of wave, and they carry television and radio programs through space. the author probably began the selection with examples of a mirror and straw to — select one: show how mirrors and straws work. demonstrate how things bend. explain the different things that can happen when light hits a surface. give examples of how energy works.

Explanation:

Mirrors reflect light and straws can show refraction when light passes through different medium - like air and water. These are examples of what can happen when light hits a surface.

Answer:

C. explain the different things that can happen when light hits a surface.