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Sound

Explore how sound travels through solids, liquids, and gases, its properties like wavelength and pitch, and its applications in echolocation. Discover why sound doesn't travel through vacuum and how frequency affects pitch.

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Sound

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Presentation Transcript

  1. Sound

  2. What does sound travel through?

  3. Solids, Liquids, and Gases

  4. What does sound not travel through?

  5. Vacuum

  6. What causes sound?

  7. Vibrations

  8. What does one complete wavelength look like?

  9. What does a wave with a low pitch look like?

  10. What does a wave with a high pitch look like?

  11. What is the top of a wavelength called?

  12. Crest

  13. What is the bottom of a wavelength called?

  14. Trough

  15. How do we measure wavelengths?

  16. From Crest to Crest

  17. Why does sound travel faster along a metal fence than a swimming pool?

  18. The molecules are closer together in a solid

  19. How is the sound you hear underwater different from the sound you hear in air?

  20. The sound underwater travels faster than in the air

  21. What is the number of times a sound vibrates in one second called?

  22. Frequency

  23. What is the highness or lowness of a sound called?

  24. Pitch

  25. What is the relationship between pitch and frequency?

  26. The greater the frequency, the higher the pitch

  27. What pitch do shorter strings produce?

  28. High (they vibrate faster)

  29. What pitch do longer strings produce?

  30. Low (they vibrate slower)

  31. What do animals use to help detect objects?

  32. Echolocation

  33. Why can’t people hear some sounds that animals can?

  34. The pitch is either too high or too low

  35. What device is used to detect objects moving through air or space?

  36. Radar

  37. What type of device is used to locate objects moving underwater?

  38. Sonar

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