The Sound Machine

Sound

Think-Tac-Toe

General Directions:

The purpose of the board below is to help you learn about sound, human hearing, and sound applications. You must complete one square on each row. To access the activity, hold down the “Ctrl” key and click on the number in the square you wish to complete. A worksheet with instructions and acceptable web sites should open. Record your answers on the Sound Think-Tac-Toe worksheet from class. Remember to identify the square you are exploring on your answer sheet!

#1
The Range of
Hearing / #2
How does the ear hear? / #3
Human Deafness
#4
SONAR & Sea floor mapping / #5
Sound Medicine / #6
Sonic
Tools
#7
Mock and the sound barrier / #8
Echolocation / #9
Infrasonic waves

Name ______Period ______

Sound Think-Tac-Toe Square #1

The Range of Human Hearing

General Directions: Use the websites listed below to help you find the information needed to complete this exercise. To access each link, hold down the “Ctrl” key and then left click with the mouse.

Web Sites:

Task A: What is the range of normal human hearing?

Task B: How does the human hearing compare and contrast to the range of hearing from other animals? Your comparison should reference at least three other animals.

Task C: What are mosquito ring tones and why do students like them?

Name ______Period ______

Sound Think-Tac-Toe Square #2

How Does the Ear Hear?

Web Sites:

Task A: What’s inside the human ear? Use the diagram at the bottom of this page for guidance.

Task B: What other important job does the human ear do besides interpreting sounds? Explain.

Name ______Period ______

Sound Think-Tac-Toe Square #3

Human Deafness

Web Sites:

Task A: What are some of the causes of deafness?

Task B: How does a hearing aid work?

Name ______Period ______

Sound Think-Tac-Toe Square #4

SONAR and Seafloor Mapping

Web Sites:

Task A: What does the letters in SONAR represent?

Task B: What is SONAR used for?

Task C: What is the difference between active SONAR and passive SONAR?

Name ______Period ______

Sound Think-Tac-Toe Square #5

Using Sound to Heal the Body

Web Sites:

Task A: How is sound used to check on the development of a fetus (a baby still growing in his/her mother's body)?

Task B: Name and describe four more uses of ultrasound in imaging (seeing inside the body).

Task C: Name and describe four more uses (not related to imaging) of sound in medicine.

Name ______Period ______

Sound Think-Tac-Toe Square #6

Sonic Tools

Web Sites:

Task A: What is an ultrasonic sound?

Task B: Can we hear ultrasonic sounds? Why or why not?

Task C: What are some uses of ultrasonic sound waves?

Name ______Period ______

Sound Think-Tac-Toe Square #7

Mach and the Sound Barrier

Web Sites:

Use the web sites above to find the answers to the following questions:

Task A What is the speed of sound?

Task B What does the term Mach number mean?

Task C What is the sound barrier? What does breaking the sound barrier mean?

Name ______Period ______

Sound Think-Tac-Toe Square #8

SONAR & Echolocation

Web Sites:

Task: Use the web sites above to answer the questions below

Task A What is echolocation?

Task B How do bats use echolocation to hunt their prey?How do dolphins use echolocation?

Task C How do blind humans use echolocation?

Name ______Period ______

Sound Think-Tac-Toe Square #9

Infrasonic Waves

Web Sites:

Task A What are infrasonic waves? Can we hear them? Why or why not?

Task B What are natural sources of infrasonic waves? What are some benefits of listening to natural infrasonic waves?

Task C What are some uses of infrasonic waves?

D. Goldsberry 3/18/2012