物理估算题对培养学生的观察能力和知识应用能力是很有效的,它是近几年中考题和竞赛题的一种常见题型.下面以2002年全国初中应用物理知识竞赛复赛试题的两道题说明.题1 小刚今年15岁,因重感冒输液,针头插在左手背的静脉上.其间他必须下床,这时 Physical estimation questions are very effective in cultivating students’ observation ability and knowledge application ability. It is a common question type in recent examination questions and competition questions. The following two questions in the 2002 national junior high school applied physics knowledge contest rematch questions Description: Question 1 Xiaogang is 15 years old this year because of a heavy cold infusion. The needle is inserted in the vein on the back of his left hand. During this time he must get out of bed.