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估测是利用物理概念、规律、物理常数和常识对物理量的数值和数量级进行快速计算和取值范围合理估测的方法.估测问题是一种重要的科学研究方法,在生产和生活中也有着重要作用.而中学生学会估测,不仅能对所学知识领会贯通,能够巧用妙用,而且也是学生将来走向社会后的一种生存技能.所以培养学生的估测能力,是非常必要而且是重要的.功率是与生活紧密联系的一个物理量,尤其是与耗能直接相关,所以功率估算成为生活中必需的一项技能.
Estimation is a method of using the concepts, laws, physical constants and common sense of physics to rapidly calculate and evaluate the range of values of physical quantities reasonably. Estimation is an important method of scientific research, and in production and daily life Plays an important role.And high school students to learn to estimate, not only can learn knowledge through, can be clever and magical use, but also students in the future to a social survival skills.Therefore, to develop students’ ability to assess, it is necessary and is Important: Power is a physical quantity that is closely linked with life, especially directly related to energy consumption, so power estimation becomes a necessary skill in life.