
蓮葉效應與水珠特性
Interactive Video
•
Education
•
4th Grade
•
Practice Problem
•
Hard
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
這部影片主要在介紹什麼?
蓮花的生長
奈米科學
蓮葉效應
下雨的現象
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下過大雨後,為什麼蓮葉看起來還是很乾淨?
因為蓮葉會吸收雨水
因為蓮葉表面有特殊的結構
因為雨水會把蓮葉洗得很乾淨
因為蓮葉本身就不容易髒
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
蓮葉的表面有什麼樣的微小結構?
奈米大小的細微突起
平滑的表面
粗糙的絨毛
黏黏的物質
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
水滴和蓮葉表面的接觸角大約是多少?
小於90度
大約90度
大於140度
無法測量
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
雨水落在蓮葉上會變成什麼樣子?
會被蓮葉吸收
會形成水珠
會直接流走
會黏在蓮葉上
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
為什麼水珠很容易從蓮葉上滾落?
因為蓮葉表面很滑
因為水珠與蓮葉的接觸面積很小
因為蓮葉會震動
因為水珠很輕
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
蓮葉表面有什麼特殊的性質,讓它能保持乾淨?
親水性
黏著性
疏水性
吸水性
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