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  3. 學習啦>學習方法>各學科學習方法>閱讀答案>《軟木塞彈出的物理學閱讀題答案》正文

    軟木塞彈出的物理學閱讀題答案

    時間:2015-10-12 14:55:47本文內容及圖片來源于讀者投稿,如有侵權請聯系xuexila888@qq.com 淑航 我要投稿

      軟木塞素有葡萄酒“守護神”的美譽,一直以來都被認為是理想的葡萄酒瓶塞。下面是學習啦小編收集整理的《軟木塞彈出的物理學》的閱讀題目及其參考答案以供大家學習。
     

      《軟木塞彈出的物理學》閱讀原文:

     、僭趹c;顒踊蚺蓪龊,上演軟木塞彈出酒瓶的節目固然添彩,但是在很多情況下,卻會引發意外的情況,制造樂極生悲的事故,因為爆彈出去的軟木塞很有可能會擊中旁人或者電燈。據美國眼科學會的資料統計,2012年眼睛遭受嚴重傷害的美國人中,有五分之一的人都是在開香檳慶祝時被軟木塞擊中受傷的。

     、谀敲,香檳軟木塞為什么會彈出呢?

     、垡驗橄銠壴诎l酵的過程中,會產生大量的二氧化碳,使得瓶內的壓力增大。而人們為了營造氣氛,往往會在開香檳時很夸張地搖晃酒瓶,這就導致原本在酒中處于穩定狀態的二氧化碳急劇釋放,讓軟木塞承受的壓力也相應增大,自然就會提高軟木塞彈出的風險。

     、芪覀冎,香檳要冷藏過再喝口感才會更好。冰涼不但會突出香檳的酸度,還能減小二氧化碳的釋放強度,這就使得香檳入口不至于太刺激,更加沁人心脾。相反,溫度偏高則會加強人對甜味的感覺,使得香檳味道甜膩。其實,冷藏過的香檳不僅美味,其低溫條件還可以減緩軟木塞的彈出速度。

     、莘▏m斯大學的研究人員利用氣體分析技術,計算了溫度在4~18C時香檳酒瓶內的氣壓情況。同時,還對在此溫度范圍內開瓶時軟木塞的彈出速度進行了實驗分析,并使用紅外攝像機記錄下了這一過程的慢動作。

     、藿Y果顯示,當酒瓶內的溫度在4cC時,軟木塞彈出的速度是40千米/小時左右,彈出的距離是16米;而當瓶內溫度達到18C時,軟木塞彈出的速度居然提升到了54千米/小時,彈出的距離則是21.6米。令人驚奇的是,當溫度在180C時,瓶內積聚的5氣壓競達到5至6個標準大氣壓,相當于在每平方厘米的玻璃瓶壁上施加5千克的壓力。

     、哐芯咳藛T指出,造成這種現象的關鍵之處就在于香檳的泡沫。一般每瓶香檳中大約含有1000萬個泡沫,當溫度升高時,瓶內泡沫中的空氣流動就會更快,使得軟木塞所承受的壓力也越來越.大,最終就導致了軟木塞運動速度驟然增加,從而自動彈出。由此可見,軟木塞的彈出速度基本上是由香檳泡沫的溫度決定的,其溫度越高,軟木塞彈出的速度就越快,這樣便會減少人們反應和躲閃的時間,因此人們被擊中的概率就越大,同時也會傷得越重。

     、喽,在高溫的條件下,瓶內的泡沫也會大量流失,而這些泡沫中包含著高濃度的芳香化合物,正是這些化合物的芳香賦予了香檳酒獨特的口感。

     、岽送,研究人員還發現,除了溫度之外,酒瓶的形狀也會影響瓶內泡沫的壓力,以及軟木塞彈出的速度。

     、膺@主要是受到了二氧化碳的影響,因為相比細高形狀的酒瓶,那些體積稍寬的酒瓶中的二氧化碳的流失速度要更快,而更多二氧化碳的流失就會導致瓶中泡沫流動得更快,這樣不僅會引起瓶內壓力增大,同樣也會造成香檳酒的口感趨于平淡。

     、饬硗,在盛裝香檳時,也最好不要使用塑料杯,因為塑料材料的邊緣具有斥水性,香檳泡沫通過毛細作用沾到邊緣后會膨脹成為更大的泡沫,這樣就會改變香檳的原有味道。

      (選自《大科技·百科新說》,有刪節)

     

      《軟木塞彈出的物理學》閱讀題目:

      1.下列對文章結構層次的劃分,正確的一項是(  )

      2.本文運用了哪些說明方法?請任舉兩例進行分析。

      3.文章標題為《軟木塞彈出的物理學》,那么文章具體講述了哪些與此相關的物理學知識?

      4.讀了文章,你覺得為了保證安全及保持香檳的美味,我們應該如何正確飲用香檳一類的酒水?

     

      《軟木塞彈出的物理學》閱讀答案:

      1.B(①一③段講述的是“壓力讓軟木塞彈出”,④—⑧段講述的是“溫度影響彈出速度”,⑨⑩段講述的是“酒瓶形狀改變口感”,⑩段是對前文做的補充。)

      2.作比較:如第④段將溫度偏高的香檳與冷藏后的香檳進行對比,突出冷藏的香檳口感更好的特點。

      列數據:如第⑥段用一系列精確的數據,對溫度影響軟木塞彈出速度進行說明。

      作詮釋:如第⑦段運用作詮釋的說明方法,對造成“溫度影響軟木塞彈出速度”的現象做具體深入的解說。

      3.①壓力讓軟木塞彈出;②溫度影響軟木塞的彈出速度;③酒瓶形狀改變香檳的口感;④塑料杯會改變香檳的味道。

      4.②開啟前,最好將香檳冷藏一段時間;②選購細高形狀酒瓶盛裝的香檳;③最好不要使用塑料杯飲用香檳。

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