Wooden thermometer screen and environment factors Researcher : Pao-Chia Chen, Jia-Ling Wu Teacher-mentor : Ching-Yi Su Comments Progress Summary Motive Notes Methods Result Conclusion Progress Initial
survey Prepare equipment Do experimen t Solve problem Make conclusion Data usage
Summary We want to explore the relationship betwee n the wood of the thermometer screen and t he environment it is surrounded by. Thus,we come up with some experiments to observe the changes on the wood,and collecting the air temperature from our schools station du ring the period of the experiments. Motives Its common on summer in Taiwan to see ty phoons, especially in county where rains oft
en. Last summer in 2017, the roof of woode n thermometer screen that had been used f or only less than four years at our school wa s lifted open by the devastation of Typhoon Neast. We wonder how could it be that in a f ew years. Was it because of the heavy rain Yilan usually has, the wood was wrecked so fast? Notes Question How is the relationship between environment factors and the changes of wood? Equipment Purified water 500ml Acidic solution(pH5) 500ml Wooden board(147*103*11mm)
Stainless steel cistern and cover Vernier caliper pH/Temperature Meter Methods Station Turnip Cake station at National Lo-Tong Senior High School Experiment step Soak wood in acidic solution and purified water respective ly Measure boards thickness and temperature Calculate the both variance Temperature variance: Todays temperature last times temperature () Boa rds thickness variance: Todays thickness last times thickness (mm) Make charts
Result Result 4 3 Thickness variance 2 (Acidic solution pH5) 2 Variance 1
D ec ... D . ec ... D . ec ... D . ec ... D . ec ... D .
ec ... D . ec ... D . ec ... D . ec ... D . ec ... D . ec ...
D . ec ... D . ec ... D . ec ... . 0 Thickness variance 1 (Purified water)
-1 -2 Temperatur e variance Date Conclusion We analyzed three line in the chart to under stand the trend. After engraining temperatu re variance to associate with the change of boards thickness, and judging from the gra ph, we clearly get the answer that three tre
nd is very similar to each other. Obviously, o ur question: How is the revelance between environment factors and the changes of wo od? Both thickness variance lines resemble to the temperature variance. Thank for watching
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