初中物理复习提纲(V1.0暂只提供初二版)(国外英文资料).doc

初中物理复习提纲(V1.0暂只提供初二版)(国外英文资料) 1, the movement of the bike brake will stop moving, the bike stopped what is the reason? Answer: bicycle wheels and the ground motion of the friction between the rolling friction and brake, the wheel is not easy to rotate, the friction wheel and the ground into sliding, sliding friction is much larger than the rolling, so the bicycle will stop. 2. Knowledge: when measuring the length, read the next bit of the smallest scale. 3. Knowledge: the height of the mercury column is the vertical distance from the upper surface of the mercury column in the glass tube to the mercury level in the mercury tank. Therefore, when the glass tube is tilted, the length of the mercury column becomes larger, but the height of the mercury column is constant. 4, objects in the same length, but the roughness of different levels of two horizontal plane to do uniform linear motion, the smooth section of the work done for W1, the rough section of the work done for W2, seeking the size of W1 and W2 relationship. Answer: W1 = W2 5, a small ball on the smooth carriage sheet, when the carriage by the right level of the force F, the car starting from rest in accelerated motion, in the process of movement, the movement of the ball is? Answer: static. 6, a and B two solid cylinder on the level of the ground, they are equal to the ground pressure (bottom, height is smaller than B), who is big, who is the gravity? Answer: armour big. Nail small. 7. The scale measures 3 of an object. 50CM, ask for the minimum scale of this scale. Answer: 0.1CM 8, knowledge points: evaporation only on the surface of the liquid, and the boiling at the same time in the surface and the interior is relatively flat, evaporation and boiling, more intense evaporation can be performed at any temperature and boiling in reaches a certain temperature can occur, evaporation of themselves and the surrounding temperature, boiling temperature constant. 9, knowledge points: temperature - internal energy (