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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。
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。