| Which Satellite am I? |
||||
| 中学英语教学资源网 → 英语教案 → 教学设计 手机版 | ||||
Background Satellite: a natural body that revolves around a planet; a moon. An object designed to be launched into orbit around the Earth, another planet, the Sun etc. History changed on October 4, 1957, when the Soviet Union successfully launched Sputnik I. The world's first artificial satellite was about the size of a basketball, weighed only 83 kg, and took about 98 minutes to orbit the Earth on its elliptical path. That launch saw the beginnings of new political, military, technological, and scientific developments. The Sputnik launch also marked the start of the space age and the American - Russian space race, and ultimately led to the creation of NASA and the Apollo Moon landings. Of course, the Earth has its own natural satellite – the Moon. This takes 27.3 days to orbit around our planet at a distance of some 384,400 km. Just as man-made satellites affect our everyday lives, some believe that the Moon has influence over our lives controlling our moods and behaviour! |
||||
『 点此察看与本文相关的其它文章』『 搜索相关课件』
| ||||
| 【上一篇】【下一篇】 【教师投稿】 | ||||
本站管理员：尹瑞文 微信：13958889955