在学习了测量密度的知识后,为了提高学生的学习兴趣,拓展学生的思维,增强学生的动手能力,我让班里物理实验小组的同学们完成课题“测量具有吸水性的干燥软木塞的密度”。下面是他们的实验方案和过程。实验目的:测量干燥软木塞的密度。实验器材:天平(带砝码)、量筒、水(ρ水=1.0 g/cm~3)、干燥软木塞(具有吸水性)、细铁丝。实验步骤:1用调好的天平测出软木塞的质量m_1;2将适量的 After learning the knowledge of measuring density, in order to enhance students’ interest in learning, expand students’ thinking and enhance students’ abilities, I asked classmates from Banli Physics Experiment Group to complete the task of “measuring the water-absorbent dry cork density”. The following is their experimental program and process. Purpose of the experiment: To measure the density of dry corks. Experimental equipment: balance (with weight), measuring cylinder, water (ρ water = 1.0 g / cm 3), dry cork (with water absorption), fine wire. Experimental steps: 1 with a good balance measured cork quality m_1; 2 will be appropriate