Five natural phenomena in summer, five natural phenomena in summer.

The five natural phenomena in summer include hot weather, cicadas, thunderstorms and the sunset in the Arctic Circle.

1. Hot weather: The summer high temperature in the northern hemisphere is the most remarkable climate feature. Due to different regions and different dry and wet environments, a dry and hot climate will be produced.

2. Cicada singing: At the end of June, the larvae began to emerge as adults, and the newly emerged cicadas were green, with the longest life span of about 60 ~ 70 days. In late July, female adults began to lay eggs, and the peak of laying eggs was in early and middle August, and most eggs were laid on branches with a thickness of 4 ~ 5 mm.

3. Long sunshine time: In summer, the direct point of the sun is always in the northern hemisphere. At first, it moved north, reached the Tropic of Cancer in the summer solstice, and then "returned" to the south. Summer is the longest sunshine season in the northern hemisphere, and there will be extreme days in the Arctic Circle, and the sun will not set all day.

4. Thunderstorm: Shower phenomenon accompanied by thunder and lightning, which is generated 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.

5. The sun never sets in the Arctic Circle: You can see the sun within 24 hours in the Arctic Circle or above 66 degrees north latitude.

What are the natural phenomena?

Natural phenomena refer to wind, rain, thunder and lightning, rain, snow, hail, meteor, aurora and so on. And the ebb and flow of the sea, earthquakes and tsunamis. Of course, there are natural phenomena that you don't often see, as long as they are not artificially controlled, they are all natural phenomena. In addition, tsunami is also a natural phenomenon, so is volcanic eruption.

What is the alternation of natural phenomena caused by the revolution of the earth?

The alternation of spring, summer, autumn and winter is produced by the revolution of the earth. The rotation of the earth caused by the gravitational field of the sun and its rotation. Its revolution direction is from west to east, and its period is one year. Geographical phenomenon is the change of day and night, the change of four seasons.