Physical experiment as a means of activeization of cognitive interest at students at physics learnings

The article deals with the activation of cognitive interest among students in physics classes in general schools by using various types of physical experiment. The use of physical experiment in physics lessons allows us to form stable interest in the subject for students. The considered examples of demonstration and frontal experiments, experimental tasks, can be demonstrated to students when studying the topic "Sound waves", which leads to students' interest and their desire for knowledge.