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IMPACT OF WAVES AND SOUND ON TECHNOLOGY AND SOCIETY


Individually or in groups of two, collect information on each of the five topics below. I’ve suggested one website address for each, although you can search elsewhere for information.


I am expecting to see a minimum of ½ page, typed, per topic, although you may wish to include more information. “Cutting and pasting” large blocks of text is strongly discouraged. Instead, I would rather see a point form summary of the main points.


Show your work to Mr. K. at the end of today’s class, completed or not. I will read and mark the answers but not collected them since you will need them for test studying. All these topics are “fair game” for tomorrow’s test.




A:       HIGHWAY TRAFFIC NOISE BARRIERS

How effective are the highway traffic noise barriers erected on the sides of highways that run through residential areas? What types of barriers exist? Why are they necessary? http://www.fhwa.dot.gov/environment/keepdown.htm



B:        TSUNAMIS

How are tsunamis created? How big / fast can they be? What impact can tsunamis have on coastal regions? How effective is tsunami-monitoring equipment in reducing death tolls and property destruction? http://www.drgeorgepc.com/TsunamiFAQ.html



C:       CONCERT HALL ACOUSTICS

Discuss some of the impacts of factors such as room shape, sound reflective versus absorbing surfaces, sound insulation and reverberation on concert hall acoustics. Concert Hall Acoustics



D:       EFFECTS OF NOISE POLLUTION

What is it? What sound levels are considered ‘pollution.’ Discuss the impacts of noise pollution on the physical and psychological health of humans. What impacts are there are animal populations, movements and reproductive success.

http://www.geogise.com/environmental-issues/noise-pollution.php



E:        CONTROLLING THE SWAYING OF SKYSCRAPERS 

Skyscrapers all have a natural frequency at which they sway. What are some of the forces which cause sway? Discuss the impact of sway on the inhabitants of the building and on the safety of the structure itself. How can sway be minimized or controlled.

http://science.howstuffworks.com/skyscraper4.htm Information may also be found on http://www.absoluteastronomy.com/topics/Tuned_mass_damper











http://adventure.howstuffworks.com/wave-pool3.htm


how wave pools word


Noise pollution from industrial, transportation, entertainment, and other sources can increase stress, lead to hearing loss, disrupt ecosystems, and alter animal behaviour. Noise pollution can be reduced by using mufflers, sound barriers, baffles, and earplugs, and by turning down the volume on devices such as cellphones and headsets.


What features need to be incorporated into the acoustic design of an outdoor concert venue in order for it to provide optimal sound quality for the audience but limited noise in the surrounding area?


Waves cause vibrations when they oscillate at different frequencies. Oscillating waves caused by wind or earthquakes can threaten the structure of bridges if they are not properly designed. Engineers have developed different designs of bridges, depending on local conditions, but no single design can take all possible wave frequencies into account.


analyse how properties of mechanical waves and sound influence the design of structures and technological devices (e.g., the acoustical design of a concert hall; the design of headphones, hearing aids, musical instruments, wave pools)