SAT2考试是本科生美国留学要参加的一项考试(不是必须)。下面为大家整理的是以字母O开头的SAT2物理考试中核心词汇。掌握一定的物理词汇是备考SAT2物理考试的首要前提。所以，各位考生一定要多加重视词汇的积累，预祝各位考生考试成功。

Optics

The study of the properties of visible light, i.e., the portion of the electromagnetic spectrum with wavelengths between 360 and 780 nm (1 nm = m/s).

Orbit

When an object is held in circular motion about a massive body, like a planet or a sun, due to the force of gravity, that object is said to be in orbit. Objects in orbit are in perpetual free fall, and so are therefore weightless.

Oscillation

A back-and-forth movement about an equilibrium position. Springs, pendulums, and other oscillators experience harmonic motion.

以上就是关于SAT2物理考试核心词汇的全面内容，是以O开头的。各位考生可以作为备考时的参考资料，希望对各位考生的SAT2考试有所帮助。

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