1 Any model of the origin of the solar system must explain why all the planets orbit the Sun in the same direction and in nearly the same plane. One model that wasdevisedexplicitly to address this issue was the tidal hypothesis, proposed in the early 1900s.Two nearby planets, stars, or ...
create gases and stars, the solar system began to form.本句中, way after the Big Bang happened and started to create gases and stars 是插入语,用来补充和说明时间,在阅读英语文章的时候,插入语的部分可以先忽略;在理解本句的时候,注意不要把 4.6 billion years ago 理解为 the Big Bang happened的...
An understanding of how Earth's oceans were formed must begin with an examination of how our solar system developed. Scientists believe our solar system began forming as a huge cloud of dust that collapsed to form a sun surrounded by a flat disk of particles rotating around it, This disk-t...
An understanding of how Earth's oceans were formed must begin with an examination of how our solar system developed. Scientists believe our solar system began forming as a huge cloud of dust that collapsed to form a sun surrounded by a flat disk of particles rotating around it, This disk-t...
Originally proposed to explain the origin of the Solar System, this theory has gone on to become a widely accepted view of how all star systems came to be.Nebular Hypothesis:According to this theory, the Sun and all the planets of our Solar System began as a giant cloud of molecular gas...
Teacher shows the pictures of the Solar System and talks about the planets, and then asks Ss whether can guess the topic today they learn, which will lead to the passage---How life began on the earth? 【Purpose】Lead to the topic Ss learn today through showing some pictures and asking ...
But they were polluted by living things on the ground. Hayabus a 2 is special because it sent the sand to Earth without letting it touch the outside air.Hayabus a 2, launched in 2014, aimed to work out the origin of the solar system(太阳系) and life. NASA has a similar mission. ...
教学设计与反思 课题: (Book 3)Unit 4. Astronomy: the science of the stars 【Reading:How life began on the earth】 科目: 英语 教学对象: 高一学生 课时: 1 提供者:张昌培 单位:宁波滨海学校 一、教学内容分析 本单元从天文学知识开始,再到地球生命的起源,让学生了解相关的天文知识、培养学生对科学的...
本文的单元主题是Astronomy:the science of the stars,本课例的阅读文本的题目为How Life Began on the Earth,主题语境是“人与自然”。本文课例的语篇类型属于说明文,讲述了地球上生命的起源。 02 学情分析 学生已学习完本单元词汇...
Astronomy:thescienceofthestars TheSolarsystem ?HOWLIFEBEGANONTHEEARTH Wordsandexpressions:astronomyastronomeratmospheresurfacesolarsystemexplodeplanetharmfuloxygenexistglobalspreadamphibianreptileshellfishmammalmethodprevent…fromdependon Testyourcommonknowledge:1.WhoisthefirstChineseastronauttogointo Yangliweispace?___2...