PROJECT SUMMARY
Noise - sounds usually of excessive intensity (too loud) in a given place and time, perceived as: "pointless, then bothersome, annoying, and finally harmful" (source - wikipedia).
The aim of the project was to show students and other people the sources of noise and the harmful effects of sounds with too high a level of intensity on the human body.
The students got acquainted with the physical quantities describing sounds. They know what the tone, timbre, intensity and level of sound intensity are. They know range of sounds heard by human. They are familiar with the range of hearing thresholds.
Students learned about the negative impact of noise on living organisms and the effects of its short-term and long-term impact.
They understood the health risks of exceeding the sound intensity level called the pain threshold. They learned that too much energy of the sound wave will damage the human body. The photo shows ear bleeding caused by a bursting eardrum
In the research in the project, students understood the need to use hearing protectors in places where the noise level threatens to damage hearing.
WRONG :(
ALL RIGHT :)
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The students took noise measurements by using their phones as sound level meters. It turned out that the cities we live in are noisy. The main source of noise is traffic.
Average results of measurements obtained by partners working in the project.
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We can see on the map of the city of Kielce that the noise is concentrated on the main communication arteries of the city.
Accurate noise measurement throughout the city is expensive and time consuming, but some cities have done so.
An example is the map made for the city center of Katowice.
Knowing the level of noise pollution allows you to eliminate noise, for example by setting up noise barriers.
The noise was investigated by students from the Frydlant school on Ostravice. They tested the noise levels along the highway with high traffic.
Measurements were made depending on the frequency of sound and the distance from the noise source. detailed information can be found on the website Website
The measurement results.
Barriers protect us from noise.
The measurements proved that the noise generated by the traffic of vehicles on the highway can reach the level of 85 dB. Building a sound-absorbing barrier reduces noise to a level of 62 dB.
Calculating the noise level drop of 23 dB per sound energy was reduced by 199.5.
The obtained measurement data of Czech students were used by them to create an area map of the noise pollution level.
Students from the Czech Republic, using specialized software from the University of Ostrava, simulated the setting of noise barriers and the impact on the noise level for a given area.
Students showed that the barriers can be ugly, but that people living in heavily polluted areas need noise.
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Design activities show that noise is harmful. The available measures should be taken to limit the noise level, especially in places where people live.
I am posting a video from a break to a lesson in one of Kielce's primary schools.
Riddle - what is the noise level at primary school.
Final conclusion - protect your hearing!