2011-2012学年八年级物理上学期中复习题(无答案) 沪科版（2011-2012 school year, grade eight physics semester review questions (no answer) Shanghai Branch Edition）.doc

2011-2012学年八年级物理上学期中复习题(无答案) 沪科版（2011-2012 school year, grade eight physics semester review questions (no answer) Shanghai Branch Edition） 2011-2012 grade eight physics semester review questions (no answer) First, the multiple-choice question . different objects absorb solar radiation ability is different, that it may be related to Xiao Ming, and the color of the object so that he will be a number of exactly the same objects with different colors placed in the sun, measured objects within the same time elevated temperature. He will be a number of identical objects with different colors placed in the sun measured objects, the same time elevated temperature. this link, which belongs to the scientific inquiry in A. raises questions, B. conjectures, hypotheses C., experiments, D. analyses, arguments In the following examples of applications of sound, the main means of transmitting energy by means of sound waves is A. has experience according to the sound of watermelon watermelon can be judged on the raw and cooked watermelon Dr. B. uses a stethoscope to understand how a patients heart is beating C. uses sonar to measure the depth of the ocean D. uses ultrasound to clean fine machinery Jay Chou and Fei Yuqing sing thousands of miles away, and the audience can recognize who sings when they listen to the song. This is mainly based on their sound with different A. tones, B. loudness, C. tone, D. sound speed In recent years, in order to control noise pollution and improve the living environment of residents, some cities have taken measures such as banning car whistle, planting trees on both sides of the road and installing sound insulation boards on both sides of the viaduct. The sign below shows no whistle 5. the windshield of the car is not vertically mounted. The main purpose is to A. avoid noise B., as far as possible due to flat mirror imaging affect the drivers line of sight C. to prevent the windscreen shatter, D. in order to shape beautiful 6., as a figure, a clown i