GCSE物理知识点总结——波的性质

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GCSE物理知识点

Properties of waves,including light and sound波的性质包括光和声是GCSE物理学习中的第三部分内容，下面易伯华国际教育小编就带大家了解一下这部分内容所涉及的GCSE物理知识点以及公式，来帮助同学们加深这部分内容的学习印象。

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。

以上就是易伯华小编关于Properties of waves,including light and sound部分的GCSE物理知识点的整理和总结，同学们可以作为这部分学习中的一份参考。如果在学习中还有什么疑问，欢迎随时咨询易伯华国际教育课程辅导老师，让老师一对一为你进行专业的课程辅导工作吧！