2004年南昌市物理中考试题及答案（2004 nanchang physics examination questions and answers）.doc

2004年南昌市物理中考试题及答案（2004 nanchang physics examination questions and answers） In early 2004, nanchang, jiangxi province graduated cum secondary school entrance examination Physical examination papers Note: 1. There are 5 major problems and 33 questions in this volume, with a full score of 90 and 110 minutes. When writing units in an exam, the letters are required to be labeled. The whole volume up to three times not using the standard letter, can deduct up to one point. 1. Choose a topic (20 points), 2 points for each question, and only one correct answer for each question. Please fill in the brackets that you think the correct answer will be. In physics, Newtons first law of motion is obtained by what method () A. simple experimental method b. simple prediction method C. Method of mathematical derivation d. experiment and speculation 2. In each case as shown in figure 1, in order to increase the pressure () On October 16, 2003, the shenzhou v manned spacecraft successfully returned to China, realizing the dream of flying days of Chinese thousands of years. When the spacecraft slowed down to land, the space hero Yang liweis () A. The kinetic energy increases, the gravitational potential energy decreases. The kinetic energy decreases, and the gravitational potential energy decreases C. The kinetic energy is reduced, the gravitational potential is constant. The kinetic energy is constant, and the gravitational potential energy decreases At the end of the 19th century, Thomson discovered electrons, bringing peoples attention to the interior of the atom. So scientists have come up with a variety of atomic structure models. By learning, you think that the atomic structure is closest to the following structure (a) A. Tomato B. Watermelon C. Bread D. Solar system 5. In the following appliance, the principle of the magnetic field on the current action is () A. Electric fan B. Electric blanket C. Incandescent lamp D. Rice cooker 6. In a clear winter day, with a plastic comb to