1. Welcome! The Topic For Today Is…

2. Sound ReflectionAbsorptionVolume and Intensity Characteristics of Sound 200 400 600 800 1000 Bonus Question: 5000 pts

3. Topic 1: 200 Question: What is another word for the reflection of sound? Answer Echo

4. Topic 1: 400 Question: Sound reflects best off of what sorts of materials? Answer Hard Solids with packed particles

5. Topic 1: 600 Question: What happens to sound when it hits a un- smooth or jagged surface? Answer It reflects at different angles

6. Topic 1: 800 Question: In sound, the angle of reflection equals what Answer Angle of Incident

7. Topic 1: 1000 Question: What is reverberation? Answer it is the prolonged sound due to the merging of many echoes.

8. Topic 2: 200 Question: What common characteristic do things that absorb sound have? Answer They all have holes to allow sound to bounce around in an lose energy

9. Topic 2: 400 Question: Why, when a storm is far away do you hear only low rumbles? Answer Because air absorbs high frequencies more easily than low. By the time the thunder has reached you, all the high pitches are lost and only the low ones can be heard

10. Topic 2: 600 Question: True or False Even air absorbs sound. Answer True

11. Topic 2: 800 Question: Name three items that could be in a auditorium that would help absorb sound. Answer Teacher decides

12. Topic 2: 1000 Question: What happens to the sound that bounces around in absorbent materials holes? Answer They lose energy, the energy is transferred into heat energy

13. Topic 3: 200 Question: Define Volume Answer describes how loud or soft a sound is

14. Topic 3: 400 Question: How does intensity relate to volume Answer intensity measures the amount of energy in a sound wave. Higher intensity higher volume

15. Topic 3: 600 Question: Describe at least two specific ways that people can control sound Answer PEOPLE CAN DIRECT SOUND, ABSORBING, AND REFLECTING SOUND

16. Topic 3: 800 Question: An office manager wants to reduce noise pollution in an office. What kinds of floor and window coverings would be best to use? Answer Teacher decides

17. Topic 3: 1000 Question: What does amplitude, volume, and intensity Answer Teacher decides

18. Topic 4: 200 Question: What is wavelength Answer Distance from one crest to the next

19. Topic 4: 400 Question: What are the three characteristics of sound? Answer Wavelength, amplitude, frequency

20. Topic 4: 600 Question: Which characteristic of sound effects pitch? Answer Frequency

21. Topic 4: 800 Question: Which characteristic effects the volume of sound? Answer Amplitude

22. Topic 4: 1000 Question: If a sound has high amplitude and a low frequency… what kind of sound is it? Answer Loud/low sound

23. Bonus Question: 5000 pts. Question: What property of sound is measured in decibels? Answer Decibel indicates loudness (volume, intensity) of a sound.