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托福培训
托福考试动态
2017-02-16 13:09
来源：网络
作者：
为了方便广大考生更好的复习，新东方网综合整理了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。愿大家都能取得好成绩，更多有关留学考试的资讯与辅导资料敬请关注新东方网留学考试频道。
Gamma decay
A form of radioactivity where an excited atom releases a photon of gamma radiation, thereby returning to a lower energy state. The atomic structure itself does not change in the course of gamma radiation.
Gamma ray
An electromagnetic wave of very high frequency.
Gold foil experiment
An experiment by Ernest Rutherford that proved for the first time that atoms have nuclei.
Gravitational constant
The constant of proportionality in Newton’s Law of Gravitation. It reflects the proportion of the gravitational force and , the product of two particles’ masses divided by the square of the bodies’ separation. N • m2/kg2.
Gravitational Potential Energy
The energy associated with the configuration of bodies attracted to each other by the gravitational force. It is a measure of the amount of work necessary to get the two bodies from a chosen point of reference to their present position. This point of reference is usually chosen to be a point of infinite distance, giving the equation . Objects of mass m that are a height h above the surface of the earth have a gravitational potential energy of .
Ground state
In the Bohr model of the atom, the state in which an electron has the least energy and orbits closest to the nucleus.
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。
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