Understanding Waves: A Visual Exploration
Explore the fascinating world of waves through visually engaging images and interactive clickers. Learn about different types of waves, including longitudinal and transverse waves, and discover what waves carry - energy, not matter. Delve into the concepts of mechanical and electromagnetic waves, and understand how a wave's energy is related to its wavelength, frequency, and amplitude. Dive into the electromagnetic spectrum and unravel the relationship between frequency and wavelengths. Discover the phenomenon of resonance and the correlation between color and pitch in the world of waves.
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Presentation Transcript
Clickers! What does a wave carry? a)Energy b)Matter c)Particles d)Atoms
Clickers! A transverse wave travels _______ to the direction of the wave s motion. a) at various angles b)longitudinal c) parallel d)perpendicular
Clickers! A wave s energy is related to its: a)Wavelength b)Frequency c)Amplitude d)Length
Quick Check! The electromagnetic spectrum is based on a)Amplitude b)Frequency c)The line of origin d)Wavelength
Straw Kazoo Bite down on one end of the straw. With scissors, cut a V shape at the end you bit down on. Questions 1. What does the initial pitch sound like? 2. What happens to the pitch as the length of the straw decreases? Why does it happen?
Quick Check Refraction occurs when the a)Speed of a wave changes b)Wavelength of a wave changes c)Amplitude of a wave changes d)Energy of a wave increases.
Quick Check Diffraction is a) The bending of light waves around a barrier b)When a wave bounces off an object c) The ability to form a new wave d)The number of waves that pass a point per second.
Wave Speed Problem 1 A wave along a guitar string has a frequency of 540 Hz and a wavelength of 2.5 meters. Calculate the speed of the wave.
Wave Speed Problem 2 The speed of sound in air is about 340 m/s. What is the wavelength of sound waves produced by a guitar string vibrating at 490 Hz?
Wave Speed Problem 3 The speed of light is 300,000,000 m/s. What is the frequency of microwaves with a wavelength of 0.01 meter? What is the period of the microwaves in the above question?
Quick Check 1 In class, I release sound waves with a frequency of 300 Hz. What was the wavelength of the wave in air? a) .88 m b) .25 m c) 40 m d) 1.1 m e) .0033
Quick Check 2 A wave oscillates with a period of 2.0 s, what is its frequency? a) .25 Hz b) .5 Hz c) 2.0 Hz d) 4.0 Hz
