What are the characteristics of natural phenomena in summer?

Five natural phenomena in summer include hot weather, cicada singing, thunderstorm, the sun never sets in the Arctic Circle, rainbow and so on. Thunderstorm is a shower phenomenon accompanied by lightning. Produced under thunderstorm cumulonimbus clouds. It is characterized by large-scale cloud movement, which is much more violent than showers and accompanied by discharge, and is common in summer. When a thunderstorm comes, there are often strong winds and thunderstorms. Persistent and intense thunderstorms can often reach the level of heavy rain.

The humming cicada is a male cicada, and its vocal organ is located at the base of the abdomen, like a drum, which is covered with an eardrum. The eardrum vibrates and makes a sound. Because the vocal cord muscles can expand and contract about 65,438+0,000 times per second, and the gap between the cover plate and the eardrum can play a role of * * *, its singing is particularly loud. And you can take turns singing in different tones. The female cicada is a "dumb cicada" because her musical instrument structure is incomplete and she can't make a sound. The male cicada keeps singing every day to lure the female cicada to mate. The cry of the male cicada is like a beautiful music to the female cicada.