探究岩石密度的科学之旅

摘要：本研究针对传统固体密度测量方法中操作繁琐和误差较大的问题，提出了一种改进的密度测量方法，特别适用于较大的石块。实验中，我们使用电子秤代替传统天平，采用烧杯代替量筒，通过测量石块的质量和排水前后水的质量差，间接计算石块的体积和密度。这种方法简单易行，精度较高，成功测得砂岩的密度为 2.1875 g/cm³，并验证了密度计算公式的有效性。研究还探讨了误差来源并提出改进建议，体现了实验与科学探究的结合。密度测量不仅是一项实验室技术，更是一种实用的解决实际问题的方法。
关键词：密度；实验改进；误差分析

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Exploring the Scientific Journey of Rock Density

This study addresses the issues of cumbersome operations and significant errors associated with traditional solid density measurement methods by proposing an improved density measurement technique, particularly suitable for larger stones. In our experiments, we replaced the traditional balance with an electronic scale and used a beaker instead of a graduated cylinder. By measuring the mass of the stone and the mass difference of water before and after submersion, we indirectly calculated the stone's volume and density. This method is straightforward and highly accurate, successfully determining the density of sandstone to be 2.1875 g/cm³, while also validating the effectiveness of the density calculation formula. The research further explores sources of error and offers improvement suggestions, highlighting the integration of experimentation and scientific inquiry. Density measurement is not only a laboratory technique but also a practical method for solving real-world problems.
Keywords: Density; Experimental improvement; Error analysis