1. Waves and Sound Table of Contents What Are Waves? Properties of Waves
Interactions of Waves
The Nature of Sound
Properties of Sound

2. What Are Waves? Motion in a Transverse Wave
What are the crest, trough, and rest position?

3. What Are Waves? Motion in a Longitudinal Wave
Which are the areas of compression and which are areas of rarefaction in the diagram?

4. What Are Waves? A Picture of a Sound Wave
The picture shows an area of air as the compressions and rarefactions of a sound wave pass through it. The dots represent air particles. Where are the rarefaction and the compression areas?

5. What Are Waves? Waves Transfer Energy A wave moves
the bottle in a circular motion. After the wave passes, the bottle returns to where it started. How will the bottle look in the bottom picture?

6. Properties of Waves Amplitude
The amplitude of a transverse wave is the maximum distance the medium vibrates from the rest position. What are the parts of the wave?

7. Properties of Waves Properties of Waves
All waves have amplitude, wavelength, frequency, and speed.
TRANSVERSE WAVE
Wavelength
Crest
Amplitude
Rest position
Trough
Wavelength
Direction of wave
LONGITUDINAL WAVE
Compression
Rarefaction
Wavelength

8. Properties of Waves
The table shows measurements of some properties of a sound wave in water and in air. How would you complete the table?

9. Interactions of Waves The Law of Reflection
The law of reflection states that the angle
of incidence equals the angle of reflection.

10. Interactions of Waves Constructive Interference
When waves combine to form a wave with a larger amplitude, it is called constructive interference.

11. Interactions of Waves Destructive Interference
Describe the steps of destructive interference.

12. Interactions of Waves Standing Waves
As the frequency of the standing wave increases, more nodes and antinodes are created. Identify the nodes and antinodes.

13. The Nature of Sound Diffraction
Diffraction occurs when sound waves pass through an opening such as a doorway. Which picture accurately depicts this?

14. The Nature of Sound Speed of Sound in Air
The data in the table show how the speed of sound in air changes with temperature. Discuss how you would plot temperature on the horizontal axis and speed on the vertical axis to create a line graph.

15. The Nature of Sound Speed of Sound
The table shows the speed of sound in different media.

16. Properties of Sound
The table compares the range of frequencies that humans and various animals can hear.

17. Properties of Sound Measuring Loudness
The table compares the loudness of some familiar sounds.

18. Properties of Sound The Doppler Effect
As the fire truck speeds by, observers hear a change in the pitch of the siren.

19. Properties of Sound How Your Headphones Work
Headphones turn an electrical signal into sound waves.