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GCSE物理辅导波的性质知识点总结

标签:    点击量:     发布日期:2019-12-07    作者:学通国际教育

  Properties of waves,including light and sound波的性质包括光和声是GCSE物理辅导学习中的第三部分内容,今天学通国际教育老师为大家介绍这部分内容所涉及的GCSE物理辅导知识点以及公式。

GCSE物理辅导波的性质知识点总结

  3.1 General wave properties普通波的性质

  1-describe what is meant by wave motion as illustrated by vibration in ropes,springs and by experiments using water waves

  通过用波动的意义解释绳子,弹簧和水波的振动试验

  2-use the term wavefront用波振面

  3-give the meaning of speed,frequency,wavelength and amplitude

  给出速率,频率,波长和幅度的意义。

  4-recall and use the equation v=fλ

  记住和应用等式速率=平率×时间

  5-distinguish between transverse and longitudinal waves and give suitable examples

  区分横波和纵波并且举出合适的例子。

  6-describe the use of water waves to show用水波描述

  (i)reflection at a plane surface平面反射

  (ii)refraction due to a change of speed折射由于速率的改变。

  (iii)diffraction produced by wide and narrow gaps

  通过宽的或窄的缝隙产生衍射。

  7-interpret reflection,refraction and diffraction using wave theory

  用波的理论解释反射,折射和衍射。

  3.2 Light光

  (a)Reflection of light光的反射

  1-describe the formation,and give the characteristics,of an optical image by a plane mirror

  描述形成,给出特点在平面镜中呈现的光学图像。

  2-use the law angle of incidence=angle of reflection会用入射角等于反射角

  3-perform simple constructions,measurements and calculations

  演示简单的结构测量和计算。

  (b)Refraction of light光的衍射

  1-describe an experimental demonstration of the refraction of light

  描述一个实验解释光的衍射现象。

  2-use the terminology for the angle of incidence i and angle of refraction r and describe the passage of light through parallel-sided transparent material

  会用术语入射角i折射角r并且描述光通过两个透明的平行板。

  3-give the meaning of critical angle

  给出一些重要角度的意义。

  4-describe internal and total internal reflection

  描述内部的和总的反射

  5-recall and use the definition of refractive n in terms of speed

  记住和应用以速度定义折射率n.

  6-recall and use the equation sin i/sin r=n记住和应用等式sin i/sin r=n

  7-describe the action of optical fibres描述纤维光学的作用。

  (c)Thin converging lens薄的汇聚透镜

  1-describe the action of a thin converging lens on a beam of light

  描述薄聚焦透镜对一束光的作用。

  2-use the term principal focus and focal length

  会用主焦点和焦距。

  3-draw ray diagrams to illustrate the formation of a real image by a single lens

  用光线图来解释通过单镜头形成的实相。

  4-draw ray diagrams to illustrate the formation of a virtual image by a single lens

  画光线图来解释通过单镜头形成的虚像。

  5-use and describe the use of a single lens as a magnifying glass

  用和描述利用一个单镜头作为一个放大镜。

  (d)Dispersion of light光的分散

  1-give a qualitative account of the dispersion of light as illustrated by the action on light of a glass prism

  定性的分析当光通过棱镜分散的行为

  (e)Electromagnetic spectrum电磁波谱

  1-describe the main features of the electromagnetic spectrum and state that all e.m.waves travel with the same high speed in vacuo

  描述电磁波的主要特点和描述所有的波以同样的速度在真空中传播。

  2-state the approximate value of the speed of electro-magnetic waves

  描述电磁波速度值。

  3-use the term monochromatic

  用单一的一色的。

  3.3 Sound声音

  1-describe the production of sound by vibrating sources

  描述声音是由振动产生。

  2-describe the longitudinal nature of sound waves

  描述声音的纵向特性。

  3-state the approximate range of audible frequencies

  描述可听得见波的大概频率。

  4-show an understanding that a medium is required in order to transmit sound waves

  展示和理解声音的传播需要介质。

  5-describe an experiment to determine the speed of sound in air

  描述一个测量声音在空气中传播的速度。

  6-relate the loudness and pitch of sound waves to amplitude and frequency

  声波的响度和音调与振幅和频率之间的关系。

  7-describe how the reflection of sound may produce an echo

  描述声音的反射产生回声。

  8-describe compression and rarefaction

  描述压缩和稀疏

  9-state the order of magnitude of the speed of sound in air,liquids and solids

  描述液体和固体在空气中传播速率大小的顺序。

  以上就是GCSE物理辅导波的性质知识点总结的介绍,想要了解更多GCSE辅导的信息,可以咨询学通国际教育老师。


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