第六课

Unit 2第二单元    hot and cold 冷与热

1. Table tennis flat, if not damaged, with boiling water a hot will drum up;乒乓球瘪了,如果没破损,用开水一烫就会鼓起来;

2. Put the freshly boiled eggs in cold water for a while, the shell will be easy to peel off; 把刚煮熟的鸡蛋在冷水里放一会儿,蛋壳就会容易剥掉;

3. In the summer, pump up the bicycle tires and don't beat them too much···夏天,给自行车轮胎打气,不能打得太足······

4. What exactly scientific truth do these practices contain? 这些做法究竟包含什么科学道理呢?

6  Which water is hot哪杯水热

1. In life we often say that water is hot and cold,生活中我们经常说水很烫、水凉了,

2. These are all related to the temperature of the water. 这些都与水的温度有关。

3. How do you know what the temperature of water is?怎样知道水的温度是多少呢？

4. Activity process活动过程

5. It's hotter than a glass of water.比一比哪杯水更热。

6. I feel like these two glasses of water are almost hot.我感觉这两杯水差不多热。

7. Measure it with a simulator.用似器测量一下。

8. Be careful of hot! 小心烫手！

9. Scale, glass tube, liquid, glass bubble, water thermometer, thermometer刻度、玻璃管、液体、玻璃泡、水温计、体温计

10. The hot and cold degree of the object is indicated by the temperature. 物体的冷热程度用温度表示。

11. A thermometer is an instrument for measuring the temperature of an object,温度计是测量物体温度的仪器,

12. Select the appropriate thermometer according to the object under test.要根据被测物体选择合适的温度计。

13. Our usual thermometer is a centigrade thermometer,我们常用的温度计是摄氏温度计,

14. Its unit of measurement is "for degrees Celsius" , expressed in "℃" . 它的计量单位是“摄氏度用”，用“℃”表示。

15. How to measure the temperature of water?怎样测量水的温度？

16. Reading as follows: 37 ° C读作：37摄氏度

17. Writing :37℃写作：37℃

18. Methodological guidance方法指导

19. Hold the upper part of the thermometer in your hand.用手拿着水温计的上部。

20. Dip the glass bubble of the thermometer completely in the water, do not touch the bottom and wall of the container.将水温计的玻璃泡完全浸在水申,不要接触容器底和壁。

21. After the liquid column in the water thermometer is still, read out the temperature.等水温计内的液柱静止后,读出温度。

22. When reading, the water thermometer can not take out the water surface, the line of sight should be flat with the top of the liquid column.读数时,水温计不能拿出水面,视线要与液柱顶端相平。

23. I'll take a test我来测一测

24. Outreach activities拓展活动

25. Life will use a variety of thermometers, to understand it!生活中会用到多种温度计，去了解一下吧！