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 come from a variety of causes including car fires, home fires, chemical burns and on-the-job accidents. How badly the burn is depends on the depth of the burn. Burn depth may be best understood by examining how the skin is made up. The top layer of skin is on the surface and called the epidermis.