1 / 16

Lesson 1

Lesson 1. density. The ratio of the mass of a substance to its volume (mass divided by volume). Lesson 2. pitch. a description of how a sound is perceived as high or low depends on the frequency of the sound wave. Lesson 2. loudness. perception of the energy of a sound. Lesson 2.

duaa
Télécharger la présentation

Lesson 1

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Lesson 1 • density • The ratio of the mass of a substance to its volume (mass divided by volume)

  2. Lesson 2 • pitch • a description of how a sound is perceived as high or low • depends on the frequency of the sound wave

  3. Lesson 2 • loudness • perception of the energy of a sound

  4. Lesson 2 • intensity • the amount of energy per second carried through a unit area by a wave

  5. Lesson 2 • decibel • (dB) • a unit used to compare the loudness of different sounds

  6. Lesson 2 • Doppler effect • the change in frequency of a wave as its source moves in relation to an observer

  7. Lesson 3 • music • a set of sounds or notes combined in ways that are pleasing

  8. Lesson 3 • fundamental tone • the lowest natural frequency of an object

  9. Lesson 3 • overtone • a natural frequency that is a multiple of the fundamental tone’s frequency

  10. Lesson 4 • ear canal • a narrow region leading from the outside of the human ear to the eardrum

  11. Lesson 4 • eardrum • the small, tightly stretched drum like membrane that separates the outer ear from the middle ear, and that vibrates when sound waves strike it

  12. Lesson 4 • cochlea • a snail-shaped tube in the inner ear that is lined with receptor cells that respond to sound

  13. Lesson 5 • echolocation • the use of reflected sound waves to determine distances or to locate objects

  14. Lesson 5 • ultrasound • sound waves with frequencies above 20,000 Hz

  15. Lesson 5 • sonar • a system that uses reflected sound waves to locate and determine the distance to objects under water

  16. Lesson 5 • sonogram • an image formed using reflected ultrasound waves

More Related