-- Radio waves. (To hear the weather while I'm waking up.)
-- Light waves. (To see where the dog is so I don't step on him.)
-- Infrared waves. (To make my toast for breakfast.)
-- Microwaves. (To heat my oatmeal for breakfast. Also when I go in to my job as a microwave communications engineer.)
s = d/t
Speed = Distance divided by time
<span>2 characteristics of stars are shown in an H-R diagram is S</span>ize and Color.