What two properties of EM waves change from one end of the EM spectrum to the other?

Describe two uses for microwave radiation.

Why do you think remote controls for tvs, vcrs, and stereos use infrared light rather than ultraviolet light?

For a camera to make visible images of heat escaping from a building in winter, what type of EM wave would it need to photograph?

When a person in a car is talking on a cell phone, and the car moves from one cell to another, the conversation continues without interruption. How might this be possible?