物理估算,是指对物理量的大致数据范围或数量级进行科学计算的推算方法.估算题主要不在“数”而在“理”,不追求数据精确而追求方法正确.能否灵活应用物理知识对具体问题进行估算,某种程度上能体现科学素养的高低,因此在近几年的中考物理命题中,与人体有关的各种物理估算题越来越受到命题者的青睐. Physical estimation refers to the method of scientific calculation for the approximate data range or magnitude of physical quantities. The estimation questions are mainly not “numbers” but “rationalities”, and do not pursue the accuracy of the data and pursue the correct method. Can the physical knowledge be used flexibly? The estimation of the problem can reflect the level of scientific literacy to some extent. Therefore, in the physics propositions of the examinations in recent years, various physical estimation questions related to the human body are increasingly favored by propositioners.