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© Oxford University Press 2011 IP Diffraction of waves Diffraction of waves
© Oxford University Press 2011 IP Diffraction of waves Whenever waves pass through a gap or move around an obstacle they spread out. This is called diffraction and it happens with either transverse or longitudinal waves.
© Oxford University Press 2011 IP Diffraction of waves Diffraction occurs all around us. Sound waves diffract when they go through an open doorway. This is why you can hear someone if they are talking outside the door.
© Oxford University Press 2011 IP Diffraction of waves The size of the gap and wavelength of the wave affect how much diffraction takes place. The best diffraction takes place when the gap is the same size as the wavelength.
© Oxford University Press 2011 IP Diffraction of waves Look at this picture again. Would the diffraction be greater or less if the sound was changed to a lower pitch?
© Oxford University Press 2011 IP Diffraction of waves Light has a very short wavelength so normally it is very difficult to observe diffraction. A CD acts as a diffract grating which causes light to diffract into a rainbow pattern.
© Oxford University Press 2011 IP Diffraction of waves Ultrasound also has a very short wavelength. Why does this make it good for medical imaging?
Diffraction Noadswood Science, Diffraction To understand diffraction Wednesday, April 29, 2015.
IP Frequency and pitch © Oxford University Press 2011 Frequency and pitch.
IP Different types of wave © Oxford University Press 2011 Different types of wave.
IP Moving wave sources Moving wave sources.
1 Waves Chapter Types of Waves A wave is a disturbance that carries energy through matter or space. The medium is the matter through which a wave.
Waves. A wave is a disturbance that carries energy through matter or space. It does not move matter. Energy may spread out as a wave travels.
Diffraction – The bending of a wave around a barrier, such as an obstacle or the edges of an opening.
Polarization, Diffraction and Interference Behavior of Waves Essential Knowledge 6.A.1: Waves can propagate via different oscillation modes such as transverse.
1 Waves Chapter Wave at the Shoe 3 Types of Waves A wave is a disturbance that carries energy through matter or space. The medium is the matter.
WAVES Chapter 7 What is a wave A wave is –A rhythmic disturbance –Carries ENERGY but not MATTER.
Sound. Sound Waves Sound is a disturbance that travels through a medium as a longitudinal wave.
Chapter 17 Mechanical Waves and Sound Mechanical Waves Section 17-1.
How do waves interact?. Reflection Reflection: Happens when a wave bounces back after hitting a barrier. Reflection: Happens when a wave bounces back.
Chapter 17 Mechanical Waves and Sound. Chapter 17 *Mechanical wave- disturbance in matter that carries energy from one place to another *Mechanical wave-
Waves Part 1 Basics What is a wave? A wave is a disturbance that carries energy through matter or space.
Sound Waves Physics Chapter 13 Section 1. I. Production of sound waves Produced by an object vibrating Produced by an object vibrating -ex. Tuning fork.
Mechanical Waves and Sound Physical Science. Mechanical Waves & Properties of Mechanical Waves.
By Rhett Price. Speed of sound depends on density Correlation between speed and density Not as fast as light speed Also affected by pressure and temperature.
Lesson 1a: What is Sound? -Identify the characteristics of sound waves. -Explain how sound travels.
+ Perceiving Sound. + Before we start! A review of Light.
© Oxford University Press 2011 IP Sounds around us Sounds around us.
Waves By: S Unit 5 Mechanical waves are disturbances in matter which need a medium to travel through. These waves also carry energy from place to place.
Radio Station A - FM network using a radio wave of 93.4 MHz (93.4 ×10 6 Hz) Radio Station B - AM network using a radio wave of 856 kHz a)Calculate the.
Reflection at an Angle Normal Ray of light, or “ray” of sound at an angle to reflector Virtual Ray Incident angle reflected angle mirror Think about this.
MT 5 LT 2 – Behavior Of Waves. Let’s Review LT 1 – Basic Properties of Transverse Waves Amplitude Wavelength Frequency Speed DO NOT COPY.
Mechanical Waves and Sound Ch. 17 Physical Science.
Speed of Waves Speed of waves in strings (review): Speed of longitudinal waves in a solid rod: E - Young’s modulus - density m - mass V - volume F - tension.
Daily Challenge, 1/7 If light is made of waves and experiences interference, how will the constructive and destructive interference appear to us?
Chapter 10 - Waves Section 3 - The Behavior of Waves.
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:
Waves & Sound Ch 10 6 th grade. What forms mechanical waves? A wave is a disturbance involving the transfer of energy from place to place. Waves that.
Waves. What is a Waves? A wave is a disturbance that transfers energy through matter or space. w When waves move through matter, we call the matter.
1.What causes waves (in general)? What do waves transfer? Waves are caused by vibrations Pulse = single vibration Oscillation – repeating vibration ENERGY.
Do now! Can you discuss with your partner all the things you can remember about the WAVES topic (topic 3)
Bell Ringer 1.How would you describe a wave to someone who had never seen one before? 2.List 3 different types of waves.
Wave Properties. S8P4. Students will explore the wave nature of sound and electromagnetic radiation. d. Describe how the behavior of waves is affected.
Physics Chapter 5, Section 4 Sounds from Vibrating Air.
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.
Standards and Vocab Waves. Standards Students will explore the wave nature of sound and electromagnetic radiation. a. Identify the characteristics of.
The Wave Nature of Light. Waves So far we have learned about mechanical waves in slinkies, strings, and air. Sound waves are mechanical waves. Mechanical.
Review of Sound Waves Waves move and carry energy Waves travel in a medium Waves are created when a source of energy causes a medium to vibrate Waves spread.
What is a sound wave? Mechanical wave – longitudinal *A vibration *Particles of medium are disturbed *Causes a wave causes Most common medium is air Can.
Waves, Sound, and Light Chapter 1. Bell Work 11/2/09 1.Name two ways you can apply force to a soccer ball. 2.Name two ways the force you apply can change.
Waves Openers Mrs. V Science A. Crest, B. Wavelength, C. Trough, D. Amplitude
Diffraction Information gathered from: gcsescience.com.
Waves Waves can transfer energy and information without a net motion of the medium through which they travel. They involve vibrations (oscillations) of.
SOUND Sound is energy transferred by the compression & rarefaction of matter: sound waves are compressional waves Collisions between molecules transfer.
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