新东方网>留学>SAT考试>SAT辅导>SAT物理>正文

SAT2物理常用术语词汇整理(P)

2011-12-05 18:31

来源:互联网

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。

  Pascals

  The unit for measuring pressure. One Pascal is equal to one Newton per meter squared, 1 Pa = 1 N/m2.

  Pendulum

  A pendulum consists of a bob connected to a rod or rope. At small angles, a pendulum’s motion approximates simple harmonic motion as it swings back and forth without friction.

  Period

  The time it takes a system to pass through one cycle of its repetitive motion. The period, T, is the inverse of the motion’s frequency, f = 1/T.

  Phase

  Two oscillators that have the same frequency and amplitude, but reach their maximum displacements at different times, are said to have different phases. Similarly, two waves are in phase if their crests and troughs line up exactly, and they are out of phase if the crests of one wave line up with the troughs of the other.

  Phase change

  When a solid, liquid, or gas changes into another phase of matter.

  Photoelectric effect

  When electromagnetic radiation shines upon a metal, the surface of the metal releases energized electrons. The way in which these electrons are released contradicts classical theories of electromagnetic radiation and supports the quantum view according to which electromagnetic waves are treated as particles.

  Photoelectron

  The name of an electron released from the surface of a metal due to the photoelectric effect.

  Photon

  A small particle-like bundle of electromagnetic radiation.

  Pitch

  Another word for the frequency of a sound wave.

  Planck’s constant

  A constant, J · s, which is useful in quantum physics. A second constant associated with Planck’s constant is .

  Polarization

  A process that aligns a wave of light to oscillate in one dimension rather than two.

  Potential energy

  Energy associated with an object’s position in space, or configuration in relation to other objects. This is a latent form of energy, where the amount of potential energy reflects the amount of energy that potentially could be released as kinetic energy or energy of some other form.

  Power

  Defined as the rate at which work is done, or the rate at which energy is transformed. P is measured in joules per second (J/s), or watts (W).

  Pressure

  A measure of force per unit area. Pressure is measured in N/m2 or Pa.

  Principal axis

  The straight line that runs through the focal point and the vertex of a mirror or lens.

  Proton

  A positively charged particle that, along with the neutron, occupies the nucleus of the atom.

  Pulley

  A pulley is a simple machine that consists of a rope that slides around a disk or block.

  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。

  相关推荐》》》北美留学高峰论坛

  更多SAT考试信息》》》新东方网SAT频道

(责任编辑:张梦璇)

新东方网托福官方微信:新东方托福 (微信号:xdftoefl

最新考试资讯、托福预测、托福解析,请扫一扫二维码,关注我们的官方微信! 

新东方SAT辅导专区

班级名称 上课地点 上课时间 费用 详细

焦点推荐

精品直播

版权及免责声明

凡本网注明"稿件来源:新东方"的所有文字、图片和音视频稿件,版权均属新东方教育科技集团(含本网和新东方网) 所有,任何媒体、网站或个人未经本网协议授权不得转载、链接、转贴或以其他任何方式复制、发表。已经本网协议授权的媒体、网站,在下载使用时必须注明"稿件来源:新东方",违者本网将依法追究法律责任。

本网未注明"稿件来源:新东方"的文/图等稿件均为转载稿,本网转载仅基于传递更多信息之目的,并不意味着赞同转载稿的观点或证实其内容的真实性。如其他媒体、网站或个人从本网下载使用,必须保留本网注明的"稿件来源",并自负版权等法律责任。如擅自篡改为"稿件来源:新东方",本网将依法追究法律责任。

如本网转载稿涉及版权等问题,请作者见稿后在两周内速来电与新东方网联系,电话:010-60908555。