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问题解决题考查的知识面广、综合性强,有较强的探究性和开放性.下面就中考问题解决题测量物质密度的一些常见方法作一些浅析.一、利用弹簧或弹簧测力计测物质的密度例1叶子姐姐买了一瓶饮料,想知道饮料的密度,但身边只有一根弹簧、一个重为G0的小桶、一把刻度尺和水.已知在弹性限度内,弹簧所受的拉力与伸长的长度成正比.
Problem solving questions Knowledge of a wide range of tests, comprehensive, and strong exploration and openness. The following questions on the issue of test questions to measure the density of some common methods for some analysis. First, the use of spring or spring force gauge Material Density Test Example 1 Sister Yeh bought a bottle of beverage and wanted to know the density of the beverage but with only one spring around it, a small bucket of G0 weight, a scale and water. It is known that within the limits of elasticity, the spring The tension suffered is proportional to the length of the elongation.