SAT2物理常用术语词汇（K）

　　为了方便广大考生更好的复习，小编综合整理了SAT2物理常用术语词汇，以供各位考生考试复习参考,希望对考生复习有所帮助。>>免费申请出国留学<<

　　Kelvin

　　A scale for measuring temperature, dined such that 0K is the lowest theoretical temperature a material can have. 273K = 0oC.

　　Kepler’s First Law

　　The path of each planet around the sun is an ellipse with the sun at one focus.

　　Kepler’s Second Law

　　If a line is drawn from the sun to the planet, then the area swept out by this line in a given time interval is constant.

　　Kepler’s Third Law

　　Given the period, T, and semimajor axis, a, of a planet’s orbit, the ratio is the same for every planet.

　　Kinematic equations

　　The five equations used to solve problems in kinematics in one dimension with uniform acceleration.

　　Kinematics

　　Kinematics is the study and description of the motion of objects.

　　Kinetic energy

　　Energy associated with the state of motion. The translational kinetic energy of an object is given by the equation .

　　Kinetic friction

　　The force between two surfaces moving relative to one another. The frictional force is parallel to the plane of contact between the two objects and in the opposite direction of the sliding object’s motion.

　　Kinetic theory of gases

　　A rough approximation of how gases work, that is quite accurate in everyday conditions. According to the kinetic theory, gases are made up of tiny, round molecules that move about in accordance with Newton’s Laws, and collide with one another and other objects elastically. We can derive the ideal gas law from the kinetic theory.

　　小编提醒：单词的记忆要靠长期的坚持，考生们一定要持之以恒，每天都拿出来看一看背一背，让这些词汇在大脑中形成长期记忆，这样就不会轻易地忘记背过的词汇了。