n. 描寫,描述,說明書,作圖,類型
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掃描二維碼進行跟讀打分訓練
Work book Unit 16
練習本 16單元
Scientists at work
工作中的科學家
Integrating skills Reading
綜合技能 閱讀
Writing with colour
顏色的呈現
The following simple experiments is used to separate different liquids.
下面是個簡單的實驗就是分離不同的液體。
It is a technique that can be used by the police
這種方法經常被警察使用。
to find out whether people have used drugs or not.
用來找出人們是否有毒品。
It can also be used in science experiments
這個實驗也在科學實驗中用來
to find out about different colours in leaves,
發現葉子中的不同顏色
flowers and in different kinds of ink.
花和不同種類的墨水
A simple classroom experiment shows the hidden colours in ordinary markers
一個簡單的班級實驗表明普通的彩色蠟筆背后顏色。
using the "magic"of this technique.
使用技巧的魔術
Who would guess that within any brown or black marker in your pencil box
誰能想像得出在你鉛筆盒里面的褐色或黑色的蠟筆。
lie all possible colours?
所有可能的顏色?
Or that this rainbow of colours would be so easy to set free?
或者彩虹的顏色有如此易變嗎?
The secret is a simple technique called paper chromatography
一個簡單的技術奧秘被稱為紙色譜法
chromatography comes from the ancient Greek language
色譜法來自古希臘的語言。
and means "writing with colour".
意思是"顏色的呈現"。
It separates the colours in liquids,such as ink.
它在液體中分離顏色,比如墨水。
Paper chromatography is a simple experiment and easy to do in class.
在教室里,色譜法是一個很簡單很容易的實驗。
Materials:white paper towels or napkins,two glasses or cups.
原料:白色的紙毛巾或餐巾紙兩個玻璃杯或杯子。
scissors,two pencils,
剪刀,兩只鉛筆,
two markers(Black and brown work best.)a stapler,some water
兩只蠟筆(黑色和褐色最好工作)一個訂書機,一些水
Instructions: 1.Cut strips out of the paper towels or napkins
說明書:1.把紙毛巾或餐巾紙剪成條。
that are about as long as the height of the glasses or cups.
只要高過玻璃杯或杯子
2.Fold the end of each strip over,and then staple it.
2.把每個紙條折疊起來然后訂住它。
3.Make a clear dot of ink near the bottom of each strip.
3.在紙條的底部用墨水打個點。
4.Put some water in each glass or cup.
4.在玻璃杯或杯子里放些水。
5.Hang the strip on the pencil and put the pencil on top of the glass or cup.
5.把紙條掛在鉛筆上然后把鉛筆放在玻璃杯或杯子的上面。
6.Put the bottom of the paper strip in the water,
6.把紙的底部放進水里面去。
but the water should not touch the ink dot.
但水不能接觸到墨水。
Make sure the ink stays above the water and the paper stays in the water.
要確定墨水在水的上面而紙停留在水里面。
7.Allow the water to go up through the strip
7.水隨著紙上升。
and watch what happens to the ink dot.
會看到墨水點有什么變化。
Description and explanation
解釋說明
The water moves up through the paper.
水隨著紙慢慢移動
When it comes to the ink dot,the water takes the ink with it.
當它來到墨水點的時候,墨水點就被奪走了。
As the water moves up the strip,
當水蔓延到紙條上。
the black or brown ink dot changes shape and colour.Ink is a mix.
黑色或褐色的墨水點就變了形狀和顏色。這時的墨水是混淆的。
For example,black ink contains several colours.
比如,黑色的墨水包含有不同的顏色。
Not all colours"travel" at the same speed.
不是全部的顏色都是同樣的速度。
Some end up much further away from the dot.
有些顏色遠離這個點。
That is why we see the colours spread out like a rainbow.
這就是我們為什么會看到這些顏色展成一條彩虹。
文本來源于在線英語聽力室
重點單詞 | 查看全部解釋 | |||
description | [di'skripʃən] |
想一想再看 |
聯想記憶 | |
fasten | ['fæsn] |
想一想再看 vt. 拴緊,使固定,系,強加于 |
||
spread | [spred] |
想一想再看 v. 伸展,展開,傳播,散布,鋪開,涂撒 |
||
frame | [freim] |
想一想再看 n. 框,結構,骨架 |
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separate | ['sepəreit] |
想一想再看 n. 分開,抽印本 |
||
conduct | [kən'dʌkt] |
想一想再看 n. 行為,舉動,品行 |
聯想記憶 | |
tear | [tiə] |
想一想再看 n. 眼淚,(撕破的)洞或裂縫,撕扯 |
聯想記憶 | |
rainbow | ['reinbəu] |
想一想再看 n. 彩虹 |
||
technique | [tek'ni:k] |
想一想再看 n. 技術,技巧,技能 |
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stapler | ['steiplə] |
想一想再看 n. 釘書機 |
聯想記憶 |

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