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实验题,每年中考必考,从近几年来全国各地中考实验题所考核的内容来看,主要包括以下几个方面。 1.对基本仪器的构造原理、使用方法及使用时应注意的事项等内容的考核。 基本仪器主要包括:温度计,天平(托盘天平)、量筒(或量杯),弹簧秤,压强计,密度计,杠杆,开关,电流表,电压表,滑动变阻器,电能表,测电笔等。 考生要了解这些仪器的基本结构和性能,熟练掌握使用方法,清楚使用时应注意的问题。
The experimental questions, the annual examinations must be taken into account, from the assessment of the content of the examination questions in the examination examinations across the country in recent years, mainly including the following aspects. 1. The basic principles of the instrument, the use of methods and the use of attention to matters such as the assessment. Basic instruments include: thermometers, balances (tray balances), graduated cylinders (or cups), spring scales, pressure gauges, density meters, levers, switches, ammeters, voltmeters, sliding rheostats, energy meters, pencils, etc. Candidates should understand the basic structure and performance of these instruments, be proficient in how to use them, and be aware of issues that should be addressed when using them.