第十三课

13  Precipitation降水量

1. Rain is a precipitation phenomenon. Are rain and hail a precipitation phenomenon?下雨是一种降水的现象，下雨和下冰雹属于降水现象吗？

2. Materials package: large beverage bottles, etc.材料包：大饮料瓶等

3. Activity process活动过程

4. What are the precipitation phenomena on Earth?地球上有哪些降水现象？

5. Precipitation is liquid or solid water that falls from the atmosphere to the ground, mainly rain, snow, hail, etc.降水是指从大气中落到地面的液态或固态水，主要有雨、雪、雹等。

6. How do you know the amount of precipitation?怎样知道降水的多少呢？

7. People use rain gauges to observe the amount of precipitation.人们用雨量器观测降水量。

8. Let's make a rain gauge too.我们也做个雨量器吧。

9. Simulate rainfall and measure "precipitation".模拟降雨，测测“降水量”。

10. Methodological guidance方法指导

11. The rain gauge should be placed in a relatively open place, free from obstacles, and kept level.雨量器应安置在相对开阔、不受障碍物影响的地方，并保持水平。

12. Pour some water into the rain gauge first, so that the water surface reaches the "0" scale.先向雨量器中倒入一些水，使水面到达“0”刻度。

13. Accurately record the start and end time of precipitation.准确记录降水开始和结束的时间。

14. After the precipitation is over, read out and record the amount of precipitation in time.降水结束后，及时读出并记录降水量。

15. Precipitation is the amount of water that falls on the horizontal ground in a certain period of time.降水量是在一定时间内降落在水平地面上的水，

16. the depth at which it accumulates without evaporation, seepage, or loss.在未经蒸发、渗漏、流失的情况下所积的深度，

17. Usually measured in millimeters.通常以毫米为单位。

18. How does the amount of precipitation affect production and life?降水的多少对生产和生活有什么影响？

19. Good wind and rain this year ------今年风调雨顺······

20. floods, droughts洪涝、干旱

21. Outreach activities拓展活动

22. Measure the amount of precipitation from one rainfall event with a homemade rain gauge.用自制的雨量器测量一次下雨的降水量。