Each of those groups is called a class. Each of those classes is of a certain width and this is referred to as the Class Interval or Class Size. This class interval is very important when it comes to drawing Histograms and Frequency diagrams.
Burns can come from anything hot. Microwaves, the sun, (sometimes the refrigerator,) a TV, computer, or handheld game that was turned on for a long time, active volcanoes, la â¦ va, fire, friction, steam, hot water, etc., can cause burns. Or cold. Burns are caused by rapid changes in temperature
Burns are usually most severe at the points of contact with the electrical source and the ground. The hands, heels, and head are common points of contact. In addition to burns, other injuries are possible if the person has been thrown clear of the electrical source by forceful muscular contraction.