We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byImani Fenton
Modified about 1 year ago
1 of 9© Boardworks Ltd 2013 Reflection, Refraction and Diffraction
2 of 9© Boardworks Ltd 2013 What happens when waves hit a surface? How the waves behave depends on their energy and the type of material they interact with. For example, light waves are reflected by skin, but X-rays transmitted through skin. If electromagnetic waves are absorbed, some of their energy is transferred to the material. This usually increases the temperature of the material. When electromagnetic (EM) waves hit a surface, they can be reflected, absorbed or transmitted.
3 of 9© Boardworks Ltd 2013 Investigating reflection
4 of 9© Boardworks Ltd 2013 Spear fishing has been used for centuries and is still practiced by subsistence communities. What is refraction? As the light crosses the boundary between fluid and glass, it is bent, producing a distorted image. The straw appears to be bent in the liquid. What is causing this effect? This known as refraction. To accurately spear the fish, fishermen learn to aim a short distance behind the fish’s image, in order to compensate for the effect of refraction.
5 of 9© Boardworks Ltd 2013 Refraction in a glass block
6 of 9© Boardworks Ltd 2013 Understanding why light refracts
7 of 9© Boardworks Ltd 2013 What is diffraction? Diffraction is a property of all waves, which can be shown by water waves in a ripple tank. So, when radio waves travel past an obstacle or through a narrow gap, they bend or spread out due to diffraction. Here, the waves travel along until they reach a gap. The width of the gap is similar to the wavelength of the waves. The waves pass through the gap and spread out. This is diffraction.
8 of 9© Boardworks Ltd 2013 How does wavelength affect diffraction? The amount of diffraction depends on how the wavelength compares with the size of the gap. What happens if the wavelength is much smaller than the width of the gap? In this case, only the edges of the wave front are diffracted. Maximum diffraction occurs when the wavelength is similar to the gap size.
9 of 9© Boardworks Ltd 2013 Why can I receive radio but not TV?
Comparing Electromagnetic Waves To Water Waves 2 Wave model of light The wave model of light describes waves with a very small wavelength travelling.
© Boardworks Ltd of of 45© Boardworks Ltd 2009.
1 of 6© Boardworks Ltd 2006 Diffraction 19 September, 2015 Objectives Be able to describe what diffraction is and be able to draw diagrams of it. HSW:
© Boardworks Ltd of 9. © Boardworks Ltd of 9 What are electromagnetic waves? What’s the connection between light, microwaves and X-rays? Electromagnetic.
© Boardworks Ltd of 31 KS4 Physics Diffraction, Interference and Resonance.
1 IGCSE Physics Waves. 2 Lesson 5 – Diffraction and the wave equation Aims: To recall and use the relationship between the speed, frequency and wavelength.
© Boardworks Ltd 2003 IGCSE Waves: Basic Properties.
Electromagnetic Waves: Mediums Essential Question: How are the characteristics of electromagnetic waves affected by medium?
Characteristics of Waves Chapter 9 S8P4a. Identify the characteristics of electromagnetic and mechanical waves. S8P4d. Describe how the behavior of waves.
Waves and Wave Interactions Chapter Physical Science.
DO: I WILL BE ABLE TO EXPLAIN AND DEMONSTRATE THE NATURE OF WAVES IN A MEDIUM THROUGH NOTES, EXAMPLES, AND ILLUSTRATIONS. EQ: What are the basic properties.
Wave Properties. S8P4. Students will explore the wave nature of sound and electromagnetic radiation. d. Describe how the behavior of waves is affected.
P6 – The Wave Model of Radiation. Waves A wave consists of disturbances that transfer energy in the direction that the wave travels, without transferring.
The Nature of Waves What is a wave? A wave is a repeating disturbance or movement that transfers energy through matter or space Waves transfer energy.
Where do we get light?. A luminous object is one that produces light. An illuminated object is one that reflects light. Luminous Objects Illuminated Objects.
1. A wave can make a leaf bob up and down on the water, but it cannot move the leaf toward the shore. This is because waves only transfer 1.matter 2.energy.
WavesSection 3 Section 3: Wave Interactions NO STANDARDS.
This is one type of wave…. wave Wave a disturbance that propagates through a material medium or space. Waves transfer energy without the bulk transport.
Wave Interactions and Behaviors. Wave Behaviors Transmission: Occurs when waves pass through a given point or medium. example: Sound waves transmitted.
Prepared By: Shakil Raiman. Waves are a means of transferring energy and information from one place to another. These transfer takes place with no.
Unit 7: Waves, Sound, and Light... SPS9: Properties of Waves Amplitude: the height of the wave, measured in meters. Wavelength: the distance between adjacent.
A wave is a disturbance that transmits energy through matter or space.
Waves Part 1 Basics What is a wave? A wave is a disturbance that carries energy through matter or space.
PHYSICS – General Wave Properties. LEARNING OBJECTIVES Core Demonstrate understanding that waves transfer energy without transferring matter Describe.
Wave Definition: A disturbance that transfers energy from place to place. A medium, a medium is the material through which a wave travels. A medium can.
1 of 9© Boardworks Ltd of 9© Boardworks Ltd 2012 Refraction in a glass block.
WAVES Essential Questions: What is a wave? How do waves travel? What are the types of waves? What are the properties of waves? What are 4 types.
The BIG idea CHAPTER OUTLINE NEW CHAPTER Waves CHAPTER Waves transfer energy and interact in predictable ways. Waves transfer energy. 1.1 Waves have measurable.
Chapter 23 Characteristics of Waves Nature of Waves Ocean waves don’t flood the beach because they don’t carry water—they only move it up and down,
Wave a disturbance that propagates through a material medium or space. Waves transfer energy without the bulk transport of matter. In order for a mechanical.
Ch. 15 What are waves? -A wave is a traveling disturbance that carries energy from one place to another.
Transverse Waves and Lights. Essential Question: What is a wave?(pg. 43) Disturbance in matter than transfers energy from one place to another.
Interactions of Light Waves. Reflection Reflection occurs when light or any other wave bounces off an object. Law of Reflection The angle of incidence.
1 of 34© Boardworks Ltd of 34© Boardworks Ltd 2009.
The behavior of a wave is greatly influenced by the medium in which it is traveling. The wave frequency remains unchanged in different medium. The.
Chapter 15. Every sound, light and water wave that is heard and seen depends on waves A wave is a disturbance that transfers energy from one place.
WAVES. What is a wave? Any disturbance that transmits energy through matter or space.
Waves What do you know?. Types of waves Mechanical – need a medium or material to travel through ex. Water, slinky Mechanical – need a medium or material.
CHAPTER 20 THE ENERGY OF WAVES. Waves - _________________________________________________________ **As the wave travels away from its source, energy moves.
1 Recognize that all waves transfer energy. R e l a t e f r e q u e n c y & w a v e l e n g t h t o t h e e n e r g y o f d i f f e r e n t t y p e s.
Physics I Honors 1 Waves and Sound Wave Characteristics.
© Boardworks Ltd of 39. © Boardworks Ltd of 39.
The BIG idea CHAPTER OUTLINE NEW CHAPTER Waves CHAPTER Waves transfer energy and interact in predictable ways. Waves transfer energy. Waves have measurable.
How do waves interact?. Reflection Reflection: Happens when a wave bounces back after hitting a barrier. Reflection: Happens when a wave bounces back.
Light interactions. Review: Light – EM waves produced by the vibration of particles Visible light – part of the EM spectrum that we see and that interacts.
SOUND Sound is energy transferred by the compression & rarefaction of matter: sound waves are compressional waves Collisions between molecules transfer.
Light Waves. What is an Electromagnetic Wave? Let’s assume that we have electric fields without a charged body. Can it happen? 1860 – Years after Faraday.
© 2017 SlidePlayer.com Inc. All rights reserved.