Change of seasons 16 四季更替 We have already observed how the stars and flora and fauna change with the seasons. 我们已经观察过星空和动植物随季节的变化情况。 Organizing observation records will be useful for studying the change of seasons. 整理观察记录，对研究四季更替会有帮助。 What changes are brought about by the change of seasons? 四季更替带来了哪些变化？ How does the change of seasons occur? 四季更替是怎样产生的？ The high temperature in summer is not ...... 夏天的温度高，是不是…… Could it be related to the Earth's rotation around the Sun? 会不会与地球绕着太阳转动有关？ The Earth revolves around the Sun from west to east. 地球绕着太阳自西向东公转。 When the Earth rotates, the Earth's axis is tilted and the direction of tilt remains constant. 地球公转时，地轴是倾斜的，而且倾斜方向保持不变。 The time it takes for the Earth to rotate one week is one year and is called the Earth's rotation cycle. 地球公转一周的时间为一年，称为地球的公转周期。 Let's simulate the rotation of the Earth and study the reason for the change of seasons. 我们来模拟地球的公转，研究四季更替的原因。 The reason for the change of seasons 四季更替的原因 Based on experience, the ancient working people of China divided the four seasons into twenty-four festivals and compiled the "Festival Song". 我国古代劳动人民根据经验，把四季分成了二十四节气，并编写了《节气歌》。 How does it reflect the agricultural season? Let's go study it. 它是怎样反映农时季节的呢？让我们去研究吧。 Festival Song 节气歌 Spring rains startle the clear valley days. 春雨惊春清谷天， Summer full of mango and summer heat connected. 夏满芒夏暑相连。 Autumn at the dew autumn cold frost fall. 秋处露秋寒霜降， Winter snow snow winter small big cold. 冬雪雪冬小大寒。 |
Powered by Discuz! X3.4
Copyright © 2001-2020, Tencent Cloud.
