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Exploring Sight and Hearing: Understanding Ears, Sound Waves, and Balance

Learn about how ears sense sound, convert it to nerve impulses, and maintain balance. Explore the journey of sound waves from the outer ear to the cochlea and their impact on balance. Discover the intricate structures of the ear and the role of the cerebellum in analyzing balance signals. Engage in activities to enhance understanding of the sensory process. Let's delve into the fascinating world of auditory perception and equilibrium!

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Exploring Sight and Hearing: Understanding Ears, Sound Waves, and Balance

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  1. May 17, 2013 (A Day) Agenda • DSJ #46 • Sight and Hearing – Part 2 (Notes) • Bill Nye: Eyeball • DSR #46

  2. May 20, 2013 (B Day) Agenda • DSJ #46 • Sight and Hearing – Part 2 (Notes) • Bill Nye: Eyeball • DSR #46

  3. DSJ #46 • Science Notebook – 27B • Prompt: Close your eyes and listen carefully for 1 minute. Describe everything that you heard in 5 sentences or more.

  4. Sight and hearing – Part 2

  5. Learning Objective • Describe how the ears sense sound and help maintain balance.

  6. Hearing and Balance • Your ears are the sense organs that respond to the stimulus of sound.

  7. Hearing and Balance • 10. Ears convert the sound to nerve impulses that your brain interprets.

  8. Hearing and Balance • 11. Sound is produced by vibrations that travel as waves.

  9. Hearing and Balance • 12. These sound waves travel through some sort of material like air, liquid (such as water), or solid (such as wood). False

  10. Hearing and Balance • 13. The external or outer ear is shaped like a funnel to gather sound waves.

  11. Hearing and Balance • 14. The ear canal directs sound waves to the middle ear where they strike the eardrum, the membrane that vibrates when sound waves strike it. d.

  12. Hearing and Balance • 15. The outer ear is where sound enters and reaches the eardrum. b.

  13. Hearing and Balance • 16. The middle ear is where vibrations pass from the hammer to the anvil and stirrup. a.

  14. Hearing and Balance • 17. The inner ear is where vibrations in the cochlea cause nerve cells to transmit signals to the brain. c.

  15. Hearing and Balance • 18. The cochlea is a snail-shaped tube that is lined with receptor cells that respond to sound.

  16. Hearing and Balance • 19. The structures in the ear that control your sense of balance are the semicircular canals.

  17. Hearing and Balance • 20. The cerebellum, or brain, analyzes the impulses of moving fluid in the semicircular canals to determine if you are losing your balance. . . True

  18. Glue in SNB **Please remember to use only TWO drops of glue!!** If everyone uses only TWO drops, a lot of glue is saved over time…. • 24A – Sight and Hearing (Notes) • 25A – Bill Nye: Eyeball

  19. DSR #46 • Science Notebook – 27B (Under DSJ #46) • Prompt: What do ears gather into them? In which part of the ear does sound reach the eardrum? What controls our sense of balance?

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