湖北省宜昌市初中毕业生学业考试物理试题2
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第1页/共7页 2019年湖北省宜昌市初中毕业生学业考试物理试题(参考答案)
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一、选择题
1.C 2.D 3.D 4.A 5.B
6.C 7.B 8.A 9.B 10.D
11.D 12.B 13.C 14.C 15.A
二、填空题
16.男;女 第5页/共7页 17.地面;地面
18.放大;虚
19.低;大于
20.1000;500
21.2;2
22.2.5;50
23.1;4.2×103
24.20;0.3
25.聚变;裂变
三、实验探究题
26.(1)、(2)答案图略。
评分说明:第(1)题光进入玻璃和离开玻璃各1分,出射光线与入射光线不平行不扣分。第(2)题在眼睛前面画凹透镜得2分,见错无分。
27.左右摆动;电流的方向是变化的(或发电机发的电是交流电);快速转动线圈/增强磁场/增加线圈的匝数。
评分说明:严格按评分要点给分。最后两空学生答出三个答案中的任意两个均可得分。
28.(1)不合格;在额定电压下(或电压是2.5V),灯泡的功率不等于(或大于)额定功率。
(2)短了;电阻越小,电功率越大;灯泡容易烧坏。
评分说明:每空1分,严格按评分要点给分