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shi jian chu zhen zhi
Author(s): JIN Jun
Pages: 39
Year: 1983
Issue:
12
Journal: The Teaching of Thought and Political Study
Keyword: 西瓜; 实践; 水面; 入水; 浮力; 水底; 水缸; 实验; 知识; 同意;
Abstract: <正> “两只西瓜,放入水中,一只沉入水底,一只浮出水面,哪一只是熟瓜?”隔壁的晓敏一大早就跑来问中,我没实践过,也从来未了解过这方面的知识。我一楞,随即说:“我们来做一个实验,好吗?”晓敏同意了。晓敏把他们家里的一个大水缸装了大半缸水,我抱两只西瓜放了进去,结果两只都从水中浮了起来。
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