福建省福鼎市2012-2013学年八年级物理上学期期中考试试题(无答案)新人教版（Fuding, Fujian 2012-2013 grade eight physics semester midterm examination questions (no answer) new edition）.doc

福建省福鼎市2012-2013学年八年级物理上学期期中考试试题(无答案)新人教版（Fuding, Fujian 2012-2013 grade eight physics semester midterm examination questions (no answer) new edition） Mid-term examination for the first semester of the 2012-2013 school year in Fuding seventeen Physics of grade eight (time: 90 minutes: Full Score: 100 points) A choice: (only one of the four options for each question there are, is correct, the correct answer before the letter please fill in the following form, every day 3 points, a total of 39 points) 1. the following estimates are best in line with the actual situation A. people walk at about 5m/s B., and the new 2B pencil is about 18cm long C. the most comfortable temperature for the human body is about 50oC D., and the thickness of a test paper is about 1mm 2. of the following phenomena does not belong to mechanical movement The A. river flows to the east of B. C. full of excitement. seawater Pentium D. meteor sword 3. visitors sit in the boat upstream, if he is still, then choose a reference (is) A. cabin, B. River, C., oncoming ship, D., trees on the river bank 4. Xiao Shenyang in the 2009 Spring Festival evening sketch not bad money imitate singer Dao Langs voice, the audience feel very much like. From a physical point of view, Xiao Shenyang mainly imitated the singing of Dao Lang A. sonic B. tone, C. loudness, D. tone 5., if the construction site near your home is in construction, affecting your study and rest, in order to reduce noise interference, the following approach is unreasonable A. close the doors and windows, B. open doors and windows, so that the flow of air faster C. wear earmuffs D. inform relevant departments to urge the construction unit to the reasonable arrangement of construction time 6. in the following examples, it can not be explained that sound waves can transmit energy A. cleaning clock of fine parts B. ultrasonic machining of high hardness workpiece C. surgeons used ultrasound to remove stones from a patients D. 7. there is a thermometer