【文章內(nèi)容簡(jiǎn)介】 射回太空，減少地球所能獲得的熱量，進(jìn)一步降低氣溫；氣溫降低又會(huì)促進(jìn)冰川的發(fā)育，如此反復(fù)。雖然溫度下降的速度 6不會(huì)如《后天》中所描述的那么急劇，但是現(xiàn)在看，地球平均氣溫在10年內(nèi)下降20度左右是曾經(jīng)發(fā)生過(guò)的，以后再發(fā)生類似速度的降溫也是可能的。在新仙女木冰期，氣溫接近于末次盛冰期。中緯度地區(qū)即使在盛夏，最高氣溫也從不超過(guò)10度，而冬季中緯度地區(qū)的氣溫普遍在零下20度以下。從9月到次年5月，暴風(fēng)雪幾乎從不間斷。站在直布羅陀海峽或者長(zhǎng)江口，就能看到漂在海上的冰山。當(dāng)冰期來(lái)臨時(shí)，雪線和林線會(huì)下移和南移；大量淡水被鎖在高緯度地區(qū)的冰雪中，低緯度地區(qū)的降水會(huì)劇減，這都會(huì)極大干擾人類的生活。新仙女木冰期對(duì)人類早期文明造成了極大的沖擊，一般認(rèn)為，北美大陸的克羅維斯文化的消失就是新仙女木冰期造成的。當(dāng)然，人類也會(huì)適應(yīng)。在新仙女木冰期，西南亞和我國(guó)長(zhǎng)江三角洲地區(qū)誕生了農(nóng)業(yè)（歐亞大陸上其余地區(qū)的農(nóng)業(yè)全部是由這兩個(gè)地方傳播擴(kuò)散開(kāi)來(lái)的），很有可能是寒冷干燥的氣候造成的惡劣環(huán)境使得狩獵/采集不足以支持生存，逼迫人們轉(zhuǎn)向農(nóng)業(yè)。至于農(nóng)業(yè)的發(fā)明并沒(méi)有一般想象的那么困難，很有可能早期的狩獵/采集者發(fā)現(xiàn)，如果把自己吃剩下的果實(shí)留下一些扔到地里，第二年再來(lái)的時(shí)候同一個(gè)地方就會(huì)有豐富的食物；重復(fù)幾次，農(nóng)業(yè)就誕生了?，F(xiàn)代分子生物學(xué)表明，在強(qiáng)人工選擇的條件下，馴化農(nóng)作物最短可能只需要30代（30個(gè)種植季）就能夠獲得足夠好的品種。新仙女木冰期大約持續(xù)了1000~1300年，約在公元前9500年結(jié)束。其結(jié)束的原因現(xiàn)在還不清楚，但她的結(jié)束和開(kāi)始一樣突然，大概是在幾年內(nèi)氣溫上升了7度。等到新仙女木冰期結(jié)束時(shí)候，人類進(jìn)入了文明時(shí)代?！緟⒖假Y料：百度百科】以上是我看了電影《后天》之后，通過(guò)運(yùn)用地球科學(xué)知識(shí)分析、查閱資料整理出來(lái)的期末影評(píng)，本學(xué)期的《從電影中解讀地球》課程十分精彩，讓我這一文科生也不得不感慨地球科學(xué)的神奇魅力，吳老師的授課更是令我受益匪淺，感謝老師一個(gè)學(xué)期18周的辛苦勞動(dòng)！祝： 工作順利！身體健康！羅舒婷 2013年6月第四篇：后天amp。2012英語(yǔ)影評(píng)My Impressions of the Disastrous Films The Day after Tomorrow and 2012 are the science fiction films, involving the advanced digital video effects and many horrible and disastrous scenes to demonstrate the power of the nature and to make people worry about the future of environment and human beings’ existence and , the plots of these two movies are similar to each Day after Tomorrow mainly tells us that Jack Hall, who is the climatologist, predicts that global warming will lead to a new ice age and he issues a warning at a New Delhi conference, hoping the American vicepresident can take measures to deal with , the vicepresident refuses to listen to Jack and he doesn’t believe that prediction will e long, some abnormal phenomena happen in man , the scary disaster es much faster than Jack has imagined , tornados, floods, the snow, and the hailstones attack many the president starts to pay attention to Jack’ suggestion and decides to evacuate residents of the north so as to save people as soon as the center of the story, Jack tries to save the world from the effects of global warming while he promises to save his son, Sam, who is trapped in New , Jack succeeds in rescuing his son through many 2012, the main character, Jackson, a writer in Los Angeles, who works as a driver for the Russian billionaire Yuri, accidentally finds the big secret that the heads of government officials choose 400000 people to get on gigantic arks in order to ensure the continuity of human life when the world Jackson rents a private plane, and escapes from the disaster of destruction with his exwife, his son, daughter and his xwife’ boyfriend, center of plot mainly tells us the process of his adventurous journey to get on gigantic , a small percentage of humans survive from the , these two movies show us the unusual trips and feasts for eyes and ears, which make us experience some moving scenes and learn some meaningful can experience the warmth of the brilliant humanity of people from these two The brilliance of the deeply is the film’s principle and eternal theme, so do these two disastrous these two films show us the terrifying scenes during the disaster, we still see the earnest and deeply love anywhere, such as the love between parents and kids, the love between the lovers, the love between the doctor and the little cancer patient, the love between dogs and the love between the beautiful loves fill in the films and make us deeply these two films, what impresses me is the love between Jack and his son, Sam, and the love between Jackson and his kids, Noah and and Jackson are busy in working and have no time in acpanying with their sons, so Sa