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May 17, 2013

May 17, 2013. (A Day) Agenda DSJ #46 Sight and Hearing – Part 2 (Notes) Bill Nye: Eyeball DSR #46. May 20, 2013. (B Day) Agenda DSJ #46 Sight and Hearing – Part 2 (Notes) Bill Nye: Eyeball DSR #46. DSJ #46. Science Notebook – 27B

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May 17, 2013

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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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