气压计可以用来测量空气压力。低压可以促进飓风的形成。自己动手制作一个气压计吧!建议在成人监督下进行你需要:一个干净的空咖啡罐,塑料薄膜,一根橡皮筋,一根吸管,胶水,一把尺子,纸和铅笔。第一步:把塑料薄膜罩在咖啡罐口上。第二步:用橡皮筋把塑料薄膜固定在咖啡罐上,使咖啡罐密闭。第三步:把吸管粘在咖啡罐口上,使吸管的三分之二位于塑料薄膜上,三分之一伸出罐口。 Barometers can be used to measure air pressure. Low pressure can promote the formation of hurricanes. Make yourself a barometer! It is advisable to do what you need under adult supervision: a clean, empty coffee pot, plastic film, a rubber band, a straw, glue, a ruler, paper and pencil. The first step: the plastic film cover the mouth of the coffee pot. Step two: Use rubber band to fix the plastic film on the coffee pot to make the coffee pot sealed. The third step: the straw stuck to the mouth of the coffee, so that two-thirds of the straw on the plastic film, one-third out of the mouth.