1. The Ear
How it travels
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2. What three bones are in the ear? Answer

3. Hammer, anvil and stirrup

4. What is special about the three bones in the ear? Answer

5. They are the smallest bones in the body.

6. What is the outer ear called? Answer

7. The Pinna

8. Can people with large ears hear better than people with small ears
Can people with large ears hear better than people with small ears? Answer

9. No, the part of your ear that is important for hearing is inside your ear, where you can't see it. The size of the outside part of your ear makes no difference in how well you hear.

10. What does the ear drum do? Answer

11. Sounds make our ear drums vibrate which sends a message to the brain.
Is this what an ear drum looks like?

12. What causes sound? Answer

13. Sound is caused by vibrations

14. What is sound used for? Answer

15. We use sound to find out what is going on around us
We use sound to find out what is going on around us. Sound is used to communicate or for pleasure.

16. In which direction do sound waves travel? Answer

17. Sound waves travel away from the source in all directions
Sound waves travel away from the source in all directions. It travels in a circular shape or 360 degrees.

18. Can sound waves travel through things? Answer

19. Yes sound waves must have a medium to travel through
Yes sound waves must have a medium to travel through. These can be solids, such as wood, steel or a wall; liquids such as water, juice or pop; or a gas such as air.

20. What is sound a form of? Answer

21. Sound is a form of energy and can make things move.

22. Can sound waves travel in space? Why or why not? Answer

23. Sound waves can not travel through space because sound waves need something to travel through such as air, water, wood or steel. Space is a vacuum with nothing to travel through.

24. What happens when the sound waves move further and further apart
What happens when the sound waves move further and further apart? Answer

25. The sound gets harder and harder to hear when the sound waves moves further apart.

26. What did we learn from the plastic cup and string telephone experiment
What did we learn from the plastic cup and string telephone experiment? Answer

27. That sounds move through vibrations
That sounds move through vibrations. We were able to hear what was said into the cup because the sound vibrated up the string from one cup to the other.

28. What did we learn from the paper clip experiment? Answer

29. That sounds move out from the source and travels in all directions (360 degrees) and the sound gets harder to hear the further away you are from the source We also learned that some people hear better than others.

30. What did we learn from the comb experiment? Answer

31. We learned that sound can travel through liquids such as water, solids such as wood, and gas such as air.

32. What did we learn from the slinky experiment? Answer

33. That high pitched sounds have short wave lengths that are close together (they are higher frequency), and sounds with a low pitch have larger waves lengths spaced further apart (they are low frequency).

34. What part of the ear is this? Answer

35. The outer ear or the pinna The part of the ear you can see
The outer ear or the pinna The part of the ear you can see. It collects sounds and funnels them into the ear

36. What part of the ear is this? Answer

37. The ear canal Sounds travel through the ear canal to get from the outer ear to the middle ear.

38. What part of the ear is this? Answer

39. The Hammer, the Anvil and the Stirrup.
The three small bones in the inner ear lead the sound striking the eardrum, further into the inner ear

40. What Part of the ear is this? Answer

41. The semicircular canals
Three half-circular, interconnected tubes located inside each ear. Each canal is filled with a fluid and contains a motion sensor with little hairs
(cilia).This part of the ear regulates balance.

42. What Part of the ear is this? Answer

43. Cochlea
The cochlea turns sound vibrations into electrical signals ... these travel along nerves to the brain.

44. What are vocal chords? Answer

45. Vocal chords are two leathery flaps inside a person’s throat
Vocal chords are two leathery flaps inside a person’s throat. Normally vocal chords are separated by a space so air can pass between them and you can breathe. When you use your voice, your vocal chords move close together.

46. Fill in the blanks. _________ waves are caught by your fleshy ________ ear.
Answer

47. sound waves are caught by your fleshy outer ear.

48. Fill in the blanks. Sound waves travel into your ear__________ and make the __________ vibrate.
Answer

49. Sound waves travel into your ear canal and make the eardrum vibrate.

50. Fill in the blanks. Your eardrum makes the tiny bones in your __________ ear vibrate.
Answer

51. Your eardrum makes the tiny bones in your middle ear vibrate.

52. Fill in the blanks These tiny bones are called the __________, anvil and __________.
Answer

53. These tiny bones are called the hammer, anvil and stirrup.

54. Fill in the blanks. Your inner ear sends the vibrations to your ________ in a signal it can understand.
Answer

55. Your inner ear sends the vibrations to your brain in a signal it can understand.

56. What did we learn from the find that sound experiment
What did we learn from the find that sound experiment? The one where one partner sat in a chair with eyes closed. Answer

57. We learned how our ears catch sound waves
We learned how our ears catch sound waves. We have two ears to better locate where sounds are coming from.