R o p v is the velocity in ms, s is the distance or displacement in meters and t is the time in seconds 2 for acceleration a r. This gcse physics quiz on waves asks questions about reflection. Student book, collins, aqa reflection, pages 235, 236, gcse physics. Students carry out book or webbased research to identify the differences between. Law of reflection reflection and refraction of light ccea. Students doing gcse further maths will be aware of newtons equations of. Explain the reflection of light from polished and rough surfaces describe the principle and. Home gcse study tools physics refraction, reflection, diffraction and the wave equation refraction, reflection, diffraction and the wave equation 0. You are welcome to use this website as an educational or entertainment tool. This forms part of their work on waves and looks, specifically, at the bouncing and bending of light. Mirrors are typically smooth surfaces, even at the microscopic levels. May 8, 2019 bitesize ks3 physics light waves revision 2 28 images bitesize ks3 physics light waves revision 5, ear diagram and description choice image how to guide, bitesize ks3 physics light waves revision 7, 100 light reflection and refraction of bitesize, collection of of reflection worksheet.
The angle of reflection equals the angle of incidence. Explain why the sound of the siren appears to change as it passes. Edexcel gcse physics we have worked hard to compile every past paper by topic and exam board. Gcse physics, learn physics, physics lessons, physics projects. Snells law also known as snelldescartes law and the law of refraction is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, such as water, glass, or air.
Law of reflection practical activity for students youtube. Student text book, worksheet, gcse science free lesson video, power point. Physics igcse 2012 exam revision notes by samuel lees and adrian guillot 1. Whether the surface is microscopically rough or smooth has a tremendous impact upon the subsequent reflection of a beam. The complete 91 course for aqa, cgp, aqa reflection, pages 263, gcse. Reflection off of rough surfaces such as clothing, paper, and the asphalt roadway leads to a type of reflection known as diffuse reflection. Free physics revision notes on the topic practical. Incident ray, the reflected ray, and the normal to the surface of the mirror all lie in the same plane.
Waves d light and sound understand that light waves are transverse waves which can be reflected, refracted and diffracted use the law of reflection the angle of incidence equals the angle of reflection construct ray diagrams to illustrate the formation of a virtual image in a plane mirror describe experiments to investigate the refraction of. So if you want to turn a wave through 90, the wave must hit the surface at 45. Edexcel igcse certificate in physics 31 properties of. Q p u is the initial velocity, v is the final velocity and t is the time. Free physics revision notes on the topic refraction. The law of reflection states that the angle of incidence is equal to the angle of reflection. Try this fun quiz for year 10 and year 11 pupils, and get some valuable revision in. So if youre revising newtons law for edexcel gcse physics, you can find all of the newtons law questions that have been ever asked by edexcel in one single document useful, no. The angle of incidence is always the same size as the angle of reflection. This gcse physics quiz about waves looks at reflection and refraction. Materials that are soft and uneven like curtains, carpets and cushions absorb sound much more than they reflect it, and decrease reverberation. This is reflection and you will be most familiar with it from your studies of light waves but any wave can be reflected. Sep 02, 2018 investigate the law of reflection of light use the relationship between the angle of incident and the angle of reflection discuss the formation and characteristics of an optical image seen in a plane mirror design a periscope.
Search the worlds most comprehensive index of fulltext books. Tutorials, tips and advice on gcse physics coursework and exams for students, parents and teachers. Get ready for your teacher assessed grades with our physics gcse course on 1516 april. The law of reflection is illustrated in, which also shows how the angles are measured relative to the perpendicular to the surface at the point where the light ray strikes. Law of reflection practical activity liacos educational media. Reflection of waves reflection and refraction aqa gcse. The laws of re ection and refraction physics and astronomy. Following closely along with the aqa gcse physics book, this lesson powerpoint covers chapter 14.
Go to our website at to download the prac sheet and to access a whole lot more content on the topics. The law of reflection prac, which accompanies shedding light on reflection, introduces students to ray tracing and allows them to investigate the way light rays reflect the skills that students acquire in this prac will also be needed when they undertake some of the other practical activities in our shedding light on light series such as the law of refraction prac, and the lenses pra. Reflection off of smooth surfaces such as mirrors or a calm body of water leads to a type of reflection known as specular reflection. The most popular series for gcse has been updated to offer comprehensive coverage of the revised gcse specifications. The law of reflection states that the incident ray, the reflected ray, and the normal to the surface of the mirror all lie in the same plane.
As the content is for triple science students, the lesson has been aimed at high ability. The angle between the incident ray and the normal angle of incidence is the same as the angle between the reflected ray and the normal angle of reflection. The key point from the law of reflection is that the angle of reflection equals the angle of. The key point from the law of reflection is that the angle of reflection equals the angle of incidence. The friendliest physics book for as and a2 students. The law of reflection states that the angle of reflection equals the angle of incidence. Snells law states that the ratio of the angle of incidence to the angle of refraction of a wave as it travels through a boundary between two media is a constant termed the refractive index n which is the ratio of the indices of refraction. The reflection of a beam of light off a plane mirror is best looked at as if made up of a number of rays. The physics hypertextbook is a reaction to the three big problems with textbooks.
The law of reflection is illustrated in figure \\pageindex1\, which also shows how the angle of incidence and angle of reflection are measured relative to the perpendicular to the surface at the point where the light ray strikes. The law of reflection of a light at a plane mirror. Ccea planning framework for gcse physics ccea planning. Aug 11, 2020 well start with the law of reflection angle of reflection equals angle of incidence. Gcse physics newtons first law and resultant forces. Edexcel international gcse physics student book second edition paperback 5. Jun 02, 2014 the cables must be thin because the thinner the wire the more likely it will reflects this is opposite for thicker cables tir occurs when the angle of light is larger than the critical angle the critical angle is the angle at which the the wave is neither reflected or refracted if the angle. The law of reflection states that the angle of reflection equals the angle of.
Light reflection, law of reflection teaching resources. Very simple demonstration of the law of reflection. One aspect of this is reflection, which occurs when a wave electromagnetic or mechanical hits a surface it cannot penetrate. The law of reflection gcse physics single science revision other. Force vs extension in depth master hookes law for gcse physics. Sound reflection best occurs from flat, hard surfaces. The ray of light bouncing off is called the reflected ray. Learn about and revise reflection and refraction of waves with gcse bitesize physics. The law of reflection is always observed regardless of the orientation of the surface in physics class, the behavior of light is often studied by observing its reflection off of plane flat mirrors.
Edexcel international gcse physics revision guide pages 14 to 17 and pages 92 to 95. Law of reflection definition, the principle that when a ray of light, radar pulse, or the like, is reflected from a smooth surface the angle of reflection is equal to the angle of incidence, and the incident ray, the reflected ray, and the normal to the surface at the point of incidence all lie in the same plane. Learning objectives for each topic are listed and also shared with students in the student book for. To do well in gcse physics, students need to understand reflection and refraction. Reflection occurs when any wave reaches a boundary between two different media. As with a single ray of light, the angles of incidence equal the angles of reflection. The ray of light hitting the mirror is called the incident ray. Solved by expert teachers at from latest edition ncert books. Igcse reflection of light law of reflection mirror image. Waves including sound and light can be reflected at the boundary between two different materials. Gcse science 9 1 aqa gcse physics for combined science. The complete 91 course for aqa, cgp, aqa angle of reflection, pages 75, 77, gcse physics. It is ideally suited for students aspiring to gcse grades 94.
We expect to see reflections from smooth surfaces, but link illustrates how a rough surface reflects light. Transmission, absorption, reflection and refraction of waves when waves pass from one medium to another, or they meet a boundary, they can bounce back reflection, change velocity refraction be absorbed or can pass straight through depending on if the material is. In this laboratory experiment, we attempt to verify the validity of two of these laws. Specular and diffuse reflection reflection of light can be specular or diffuse. Light goes from a to b via reflection from a point p on a mirror. Snells law also known as snelldescartes law and the law of refraction is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, such as water, glass, or air in optics, the law is used in ray tracing to compute the angles of incidence or. What is meant by specula reflection and diffuse reflection. Third edition, oxford university press, aqa angle of reflection, page 235, gcse physics. Learn and revise the laws of reflection and refraction for light and sound with bbc bitesize gcse physics.
It was written by teachers especially to help year 10 and year 11 pupils revise. Applications of reflection of light in daily life a plus. Take a piece of paper and shine a flashlight at an angle at the paper, as shown in figure 25. Important equations in physics for igcse course general physics. Do your observations confirm the predictions in figure 25. About the angle of reflection the angle of reflection is always the same as the angle of incidence as stated in the law of reflection. The answers at the end refer to the summary questions in the aqa gcse physics book, page 203. Printed copies of the book are available at cost price.
The three things that may happen when a wave hits the boundary between two materials how to draw ray diagrams, including the angle. Reverberation is a measure of how much the sound is reflected around the room. When light waves strike a plane or curved mirror, they bounce off the shiny surface. The law of reflection gcse physics revision youtube. Edexcel international gcse physics student book second.
What is the intended energy change in a book dropping from a shelf. The angle of incidence equals the angle of reflection. Aqa gcse physics p14 light kerboodle answers expert. Using the law of reflection, complete the ray diagram below to show the path of the reflected ray. Edexcel international gcse physics student book pages 1218, 2325, 21, 33 and 57. Physics for you, has been updated inline with the revised national curriculum requirements. See all formats and editions hide other formats and editions. We expect to see reflections from smooth surfaces, but figure 25. Reflection the reflection of a beam of light off a plane mirror is best looked at as if made up of a number of rays. Edexcel international gcse 2009 physics 4ph0 and khp0.
The angle of reflection is the angle between the between the reflected ray and the normal. The natural echo of a room is called reverberation. Department of physics and astronomy, university of georgia, athens, georgia 30602 dated. Waves of all kinds are a major topic in gcse physics. The amount of reflection depends on the nature of the medium that the wave is hitting. A light ray is incident on a smooth surface and is. When light hits a mirror it bounces off the mirror. The law of reflection states that the angle of incidence is equal to the angle of. Free professor messer screensavers for your computer of the famous professor messer book cover cartoon. You know that reflection of light obeys the following laws.
Oct, 2012 you know that reflection of light obeys the following laws. Applications of reflection of light in daily life a plus topper. Edexcel gcse science physics higher primrose kitten. Snells law, refraction gcse and a level physics revision. Free physics revision notes on the topic reflection. Soif the angle of reflection is 20 then the angle of incidence 20 0 ii the angle between the incident ray and the reflected ray is 40 0, because the angle between. So if the angle of reflection is 20 then the angle of incidence 20 0. Law of reflection definition of law of reflection at. Ocr 21st century gcse science physics higher primrose kitten. Reflection light waves ks3 physics revision bbc bitesize. The angles are measured relative to the perpendicular to the surface at the point where the ray strikes the surface. Snells law gives a mathematical relationship to the observations of refraction made at gcse. Designed by expert teachers at save my exams for the edexcel igcse 91 physics syllabus. New gcse physics for you including the latest edition details of the full series.
1423 1739 1440 1116 989 142 432 299 386 1730 92 66 236 223 1104 467 1394 243 181 482