About This Chapter
How It Works:
- Identify the lessons in the ScienceFusion Sound Waves and Hearing chapter with which you need help.
- Find the corresponding video lessons with this companion course chapter.
- Watch fun videos that cover the sound waves and hearing topics you need to learn or review.
- Complete the quizzes to test your understanding.
- If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.
Students will learn:
- Sound and factors affecting its speed
- How we perceive sound
- Pitch, volume and decibels
- The Doppler effect and its uses
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1. What is Sound? - Definition and Factors Affecting the Speed of Sound
Sound is a longitudinal wave that travels through various states of matter, like solids, and not through a vacuum. Discover the definition and factors affecting the speed of sound including nature of sound waves, mediums, and the wave equation.
2. Mechanics of Hearing & How the Brain Processes Sound
The brain processes sound from the vibrations of sound waves against the components of the inner ear. Explore the mechanics and components of the ear and discover how they allow the brain to interpret vibrations in the air as different sounds.
3. Pitch and Volume in Sound Waves
In sound waves, pitch is the frequency of sound and volume is the intensity of sound. Explore the parameters of sound, the definitions of amplitude, intensity, and frequency, and the acoustic range.
4. What are Decibels? - Definition & Examples
Have you ever heard of decibels? Do you ever wonder what they are and how they are used? This lesson explains what decibels are and provides examples of how they are used.
5. The Doppler Effect: Definition, Examples & Applications
The Doppler effect explains why a sound's pitch seems to change depending on whether it's coming towards you or moving away from you. This lesson investigates how the Doppler effect works, and how it can be applied to the behavior of both sound waves and light waves.
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Other chapters within the ScienceFusion Sound and Light: Online Textbook Help course
- ScienceFusion Sound and Light Unit 1.1: Waves
- ScienceFusion Sound and Light Unit 1.2: Properties of Waves
- ScienceFusion Sound and Light Unit 2.2: Interactions of Sound Waves
- ScienceFusion Sound and Light Unit 2.3: Sound Technology
- ScienceFusion Sound and Light Unit 3.1: The Electromagnetic Spectrum
- ScienceFusion Sound and Light Unit 3.2: Interactions of Light
- ScienceFusion Sound and Light Unit 3.3: Mirrors and Lenses
- ScienceFusion Sound and Light Unit 3.4: Light Waves and Sight
- ScienceFusion Sound and Light Unit 3.5: Light Technology