WordPower.doc

Unit one Period 4 Word PowerThe analysis of this part: In the word power, Ss are required to expand their vocabulary about space and space exploration.Ss are given a good chance to learn more vocabulary related to space exploration. Ss are required to understand the first part of a speech given by a scientist and identify the relevant vocabulary. The second part of the speech is designed for students to utilize the vocabulary by filling in some missing words. Ss are expected to familiarize themselves with knowledge of space Teaching aims:1. Help Ss learn more about space and space exploration 2. Help Ss increase more vocabulary related to the topic.Teaching methods:1. Reading 2. Writing Teaching procedures:Step one: Lead- in Do you know something about space and space exploration? Who was the first man to travel in space? What achievements have humans made so face in space exploration?When did the first man land on the moon? And how?Step two: Vocabulary learning & Reading 1.Ask Ss to read the first part of the speech and complete the time line of the main events mentioned. TimeEventDiscovery1957195919613. Ask Ss to guess the meanings of the unknown words from the context.4. Ask Ss to continue with their discussion by raising the following questions:1) How can a space shuttle be sent into space?2) Can it fly into space by itself?3) What does spaceship and space shuttle refer to separately?A spaceship is a vehicle for carrying people through space.A space shuttle is a vehicle that is designed to carry people into space and back to the Earth several times to do experiments.5. Ask Ss to read the second part of the scientists speech and complete Part C individually according to the instructions. Step Three: Summary Right now weve got some knowledge about space and space exploration, and learnt some relevant words and expressions. Space: inner space (内宇宙空间) & outer space（太空，外层空间）The process of space exploration: The first artificial satellite was launched.-People were able to orbit the Earth in 1961. Photos are taken and samples are collected from the planets.Achievements of space exploration: Many astronauts have traveled in space and some of them have walked in space. Most planets have been examined. Photos have been taken an samples have been collected.Step four: Practice Ask Ss to finish Part D and know more about the solar system.1. Mercury The smallest of the planets and the one nearest the sun, having a sidereal period of revolution about the sun of 88.0 days at a mean distance of 58.3 million kilometers (36.2 million miles) and a mean radius of approximately 2,414 kilometers (1,500 miles).水星：行星中最小且离太阳最近的星，围绕太阳公转所需的周期为88.0天，公转的平均距离约为58,300,000公里（36,200,000英里），平均半径约为2,414公里（1,500英里）2. VenusThe second planet from the sun, having an average radius of 6,052 kilometers (3,760 miles), a mass 0.815 times that of Earth, and a sidereal period of revolution about the sun of 224.7 days at a mean distance of approximately 108.1 million kilometers (67.2 million miles).金星：离太阳第二远的行星，它的平均半径为6,052公里(3,760英里），质量是地球质量的0.815倍，它在离开太阳约为108,100,000公里(67,200,000英里）的中等距离时绕太阳转的公转周期为224.7天3. EarthOften Earth The third planet from the sun, having a sidereal period of revolution about the sun of 365.26 days at a mean distance of approximately 149 million kilometers (92.96 million miles), an axial rotation period of 23 hours 56.07 minutes, an average radius of 6,374 kilometers (3,959 miles), and a mass of approximately 29.11 1024 kilograms (13.17 10 24 pounds). 常作 Earth 地球：离太阳第三远的行星，绕太阳转动的恒星周期为365.26天，平均距离大约是1.49亿平方公里(9,296万英里），自转一周的周期为23小时56.07分，平均半径为6,374公里(3,959英里），质量大约是29.111024千克(13.1710 24英镑）4. MarsThe fourth planet from the sun, having a sidereal period of revolution about the sun of 687 days at a mean distance of 227.8 million kilometers (141.6 million miles) and a mean diameter of approximately 6,726 kilometers (4,180 miles).火星：距太阳第四近的行星。绕太阳公转周期为687天，距太阳平均距离为227.8百万公里(141.6百万英里），平均周长大约为6,726公里(4,180英里）5. JupiterAstronomy The fifth planet from the sun, the largest and most massive in the solar system, having a sidereal period of revolution about the sun of 11.86 years at a mean distance of 777 million kilometers (483 million miles), a mean diameter of approximately 138,000 kilometers (86,000 miles), and a mass approximately 318 times that of Earth.【天文学】 木星：靠近太阳的第5颗行星，也是太阳系中最大的行星，绕太阳公转的恒星期，按与太阳的平均距离777,000,000公里（483,000,000英里）算，为11.86年。其平均直径大约为138，000公里（86，000英里），其质量大约为地球的318倍6. SaturnThe sixth planet from the sun and the second largest in the solar system, having a sidereal period of revolution about the sun of 29.5 years at a mean distance of about 1,425,000,000 kilometers (886,000,000 miles), a mean diameter of approximately 119,000 kilometers (74,000 miles), and a mass 95 times that of Earth.土星：距太阳第六远的行星，是太阳系中第二大行星，绕日公转周期29.5年，公转平均半径约1,425,000,000公里(886,000,000英里），平均直径大约119,000公里(74,000英里），质量是地球的95倍7. UranusThe seventh planet from the sun, revolving about it every 84.07 years at a distance of approximately 2,869 million kilometers (1,790 million miles), having a mean equatorial diameter of 52,290 kilometers (32,480 miles) and a mass 14.6 times that of Earth.天王星：离太阳第七近的行星，距太阳约有2,869,000,000公里(1,790,000,000英里），每绕太阳一周为84.07年。平均赤道直径为52,209公里(32,480英里），质量是地球的14.6倍8. NeptuneThe eighth planet from the sun, having a sidereal period of revolution around the sun of 164.8 years at a mean distance of 4.5 billion kilometers (2.8 billion miles), a mean radius of 24,000 kilometers (15,000 miles), and a mass 17.2 times that of Earth.海王星：太阳的第八颗行星。围绕太阳公转的恒星周期为164.8年，平均周长为45亿公里(28亿英里），平均半径为24,000公里(15,000英里），体积为地球的17.2倍9. PlutoThe ninth and usually farthest planet from the sun, having a sidereal period of revolution about the sun of 248.4 years, 4.5 billion kilometers or 2.8 billion miles distant at perihelion and 7.4 billion kilometers or 4.6 billion miles at aphelion, and a diameter less than half that of Earth.冥王星：距离太阳第九远而且通常也是最远的一颗行星，它绕太阳运转的恒星年为2484年，在近日点时距太阳45亿公里或28亿英里，在远日点时距太阳74亿公里或46亿英里，其直径不到地球直径的一半Among them, Jupiter is the largest one and Mercury is the smallest