GROUP 8. REFLECTION-REFRACTION  How we can teach the students about reflection and refraction:

Slides:

Advertisements

Similar presentations

April 2011 Gen Science – Wave Interactions. Reflections of Light Energy Wednesday April 11 th, 2012 Warm-up: 1. Predict what will happen to a beam of.

Advertisements

Reflection Objectives:

Total Internal Reflection. Remember – when light goes from a more dense medium to a less dense medium it speeds up & bends away from the normal Remember.

HEAT, LIGHT, SOUND SCIENCE LANGUAGE AND VOCABULARY.

Reflection and Refraction Presented by: Chun Yin Fu Xing Zhong Lin SC442, Honors, Fall 2001, Dr. R.Kezerashvili.

Shadows. Floor Wall Torch Solid Object.

Light And Optics CPO Science. Key Questions  What is light? How can we make light?  Why are there different colors of light?  How does light behave.

Bending Light Refraction at it’s finest!. Vocabulary Refraction- the bending of light as it passes from one material into another. Prism- a polyhedron.

Reflection of light.. Specula Reflection. Reflection from a mirrored or glossy surface Specula Reflection.

Reflection & Refraction of Light Reflection: specular (mirror) vs diffuse angle of incidence = angle of reflection Refraction: Snell’s Law n 1 sin 

OPTICAL FIBER WAVEGUIDE Optical Fiber Waveguides An Optical Fiber is a dielectric waveguide that operates at optical frequencies Normally cylindrical.

PH 103 Dr. Cecilia Vogel Lecture 2. RECALL OUTLINE  Ray model & depth perception  Reflection  law of reflection  mirror images  Polarization REMINDER.

Parallel Rays  Two rays of light from the same object hit your right and left eyes. If these rays are almost parallel to each other, then the object must.

GROUP 8. Outcomes – Pre and Primary school Knowledge about the physical phenomena, reflection; Learn to work in a group; Be able to connect this phenomena.

IV. Optics Nature of light. Spectrum of electromagnetic waves.

Convex and Concave Lenses

Reflection: What is it? Reflection occurs when light bounces off an object. Reflection allow our eyes to see the world around us!

Materials: Pasco Light Machine and a Sheet of Graph Paper, reflective surface, concave lens, convex lens.

ENERGY THAT TRAVELS IN A STRAIGHT LINE. LIGHT TAKEN IN BY AN OBJECT AND NOT REFLECTED OR REFRACTED.

Light and Sight Progress Test. Light is a form of energy 1. True 2. False.

Science Howdy and welcome to our game show!! Our contestants will be given answers, and their job is to come up with the questions.

The Ray Box: Part One. Law of Reflection The law of reflection for light states that when light is incident on a specular reflecting surface the angle.

Line Ray Beam the paths along which light energy travels a bundle of light rays.

Color Problem. (colors absorbed) (color reflected)

Young’s Double Slit Experiment- models light as a wave.

What do we know about light?

Unit – K3 Refraction 25th of May 2007 Form Group 8_y.

Light & Optics. Law of Reflection The angle of incidence of reflected light equals the angle of reflection.  r =  I Note that angles are measured relative.

GİZEM SENA DÜNDAR ÖZNUR HANCI MUHAMMED DOĞAN.  A ray of light is reflected on a plane mirror. mirror This is an example of reflection of light.

Date: 2010 Room: 2117 Energy-the ability to do work and make a change. Force-a push or pull. Friction is also a force. Work-work is force +object+ motion.

 Simply put, “Refraction” means bends.  When discussing light beams, light bends when it goes from one medium (glass, water, air, etc.) to another. 

CHAPTER 8 PHYSICS FOR JUNIOR HIGH SCHOOL VIII. LIGHT  Isaac Newton States that light is small particles that is called corpuscle  Other scientists,

SCIENCE REVIEW Please take notes. The materials needed to build a circuit that would demonstrate flow of energy are: battery, bulb, switch, and copper.

Geometric Optics (Lecture I)

By: Kelsie Conroy and Catherine Almeida 2/11/10 Room 2117 WE HOPE YOU ENJOY OUR SLIDE SHOW.

LIGHT Reflection and Refraction. Mirrors and highly polished opaque surfaces reflect light in predictable ways.

Science 8: Unit C – Light and Optical Systems Topic 3: Refraction.

Refraction. Light can bend not only when it reaches a reflective surface but also when it goes from one medium to another Medium (pl. media) –The substance.

L IGHT E NERGY Unit 4. L IGHT E NERGY Light is a form of energy that can be seen. Light travels at a speed of about 300,000 kilometers per second (186,282.

Chapter 14 Refraction of light Chapter Opening 14.1 Bending of light 14.2 Phenomena involving the refraction of light 14.3 Total internal reflection 14.4.

{ Refraction The bending or change in direction of light when it travels from one medium into another.

2-3 Reflection and Refraction

Analysis for Optics Lab  Choose 6 hypothesis/data sections and analyze the hypothesis and the data 1. Briefly summarize the experimental setup 2. Summarize.

Consider a light ray incident upon a flat glass/air interface. Under what conditions will some of the light be reflected? a) Some of the light will be.

Four Important Properties of Waves. 1.Reflection 2.Refraction 3.Diffraction 4.Interference.

Dr Maria Pavlidou, University of Birmingham, Ogden Science Officer Dr Jenny Watson, Physics Factory, Ogden Teacher Fellow Mrs Lynne Long, Schools Liaison.

L3 Refraction Learning Objectives: Describe refraction.

Light and Sound In this unit: 1)Properties of light 2)Reflection 3)Colors 4)Refraction.

Light Continued. The light models explain how we… See ____________ See ______________ in objects ______ see around corners See ________ distant objects.

Reflection S4P1 Students will investigate the nature of light using tools such as mirrors, lenses, and prisms. Investigate the reflection of light using.

Investigating Refraction of Light

Today’s lesson Critical angle Total internal reflection Dispersion.

Optics – The Behaviour of Light

In pre-school primary school and secondary school

P = Predict O = Observe E = Explain

APPLICATIONS OF REFRACTION AND TOTAL INTERNAL REFLECTION

A light beam is incident at an angle  on the top surface of a block of plastic. The sides and bottom of the block are immersed in water. If =50, find.

Wave Interactions.

Bell Ringer T/F: An electromagnetic wave requires a medium.

Mirror: A surface that reflects light in a regular (clear reflection)

Interactions of Light Waves

The spectrum Year 8 Science.

P = Predict O = Observe E = Evidence

DO NOW QUESTION What do you think when you hear the word “optics”?

Light Energy Notes Electromagnetic Energy waves Light Light movement

Welcome! Today: Lab Activity - Reflection & Refraction

Visible light waves.

Presentation transcript:

GROUP 8

REFLECTION-REFRACTION  How we can teach the students about reflection and refraction:

REFLECTION

REFRACTION

REFLECTION 1. Experiment: give to the children mirror and the torch to play and experiments with. 2. Ask the children about the reflection phenomena. 3. Explain what reflection means.

REFLECTION When a ray of light meet surface of the mirror, it come back with a direction which depends on the angle which the initial ray forms with the surface.

REFLECTION

REFRACTION 1. Experiment: use laser and a prism 2. Ask the children questions 3. Explain what refraction means

REFRACTION For the experiment on refraction of light we use a laser because its ray is easy to follow. When the laser beam meets a face of the prism, part of energy of light goes in the reflected ray. The angle which the refracted ray forms with the face of prism depends on the angle which initial ray forms with the same face and on the material which the prism is made.

REFRACTION

 Any questions or comments ?! Thank you!!!....