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新《物理课程标准》要求中学物理教学要重视“从生活走向物理,从物理走向社会”.那么,在物理教学中怎样挖掘这方面的教育资源呢?我们可以“以存在介质阻力的落体运动问题的定量研究”(以雨滴下落为例)展开说明,作为这方面的一个尝试和探索.人教版高中《物理》第一册(试验修订本·必修)第一章第四节“阅读材料”部分,在讲流体的阻力问题时,提到了雨滴下落问题,并且说:速度越大,雨滴所受阻力越大,当重力与空气阻力平衡时,雨滴匀速下落.大雨滴比较重,下落的速度快,小雨滴则慢慢飘落.雨滴下落的速度是取决于它的衙量吗?比雨滴重得多的降
The new “Physics Curriculum Standards” requires that middle school physics teaching should pay attention to “from life to physics and from physics to society.” Then, how can we tap into this educational resource in physics teaching? We can “drop the body with media resistance ”Quantitative research“ (in the case of drops of rain as an example) to expand the description as an attempt and exploration in this area. PEP High School ”Physics“ Volume 1 (trial revisions required) Chapter 1 Section 4 ”Reading materials" In part, when talking about the resistance of fluids, we mentioned the problem of falling raindrops, and said: The greater the speed, the greater the resistance to raindrops. When the gravity and air resistance are balanced, the raindrops fall at a constant speed. The heavy raindrops are heavier, and the speed of falling drops. Soon, small raindrops are slowly falling. How fast does the raindrop fall depending on its amount? It is much heavier than raindrops.