Use sound level app to study the sound pollution in the area. Measure the noise levels ot market place, school, hospital, traffic signol. Prepare a detail report on it. Prepare a poster suggesting measures to reduce noise levels and its harmful effects. – Maharashtra State Board Class 12 Environmental Studies (EVS) project topic and guidance.
Fetching document, please wait.
Project 24 : Use sound level app to study the sound pollution in the area. Measure the noise levels ot market place, school, hospital, traffic signol. Prepare a detail report on it. Prepare a poster suggesting measures to reduce noise levels and its harmful effects. is an officially approved project topic in the Maharashtra State Board Class 12 Environmental Studies and Water Security curriculum. This comprehensive study equips students with practical field methodologies, ecological analysis, and empirical data required for securing an 'A' grade in school/junior college internal assessments.
Environmental Education and Water Security emphasizes sustainable development through scientific investigation. The practical documentation provided below covers the core findings, observations, and policy measures needed for comprehensive academic evaluation.
Aim of the Study: To measure and map ambient sound levels across four distinct urban zones (Marketplace, School, Hospital, Traffic Intersection) using a smartphone decibel meter app, evaluate violations of CPCB Noise Standards, and design a 'No Honking' awareness poster.
Field acoustic measurement taking 10-minute sound averages (Leq in dBA) at 4 distinct zones during peak morning (9 AM - 10 AM) and afternoon hours, recording ambient peaks, interviewing 10 residents, and creating an educational graphic poster.
This scientific investigation conforms strictly to Maharashtra State Board practical guidelines, incorporating primary survey data, empirical observations, and practical field documentation.
The following empirical observation matrix demonstrates standard data collection parameters, field measurements, and recorded outcomes for this project study:
| Urban Monitoring Zone | Observed Average Level (dBA) | Peak Maximum Sound (dBA) | CPCB Permissible Day Limit (dBA) | Degree of Noise Violation |
|---|---|---|---|---|
| Hospital Entrance (Silence Zone) | 74.2 dBA | 88.5 dBA (Ambulance & Horns) | 50.0 dBA | Excess by +24.2 dBA (Severe Violation!) |
| Junior College Campus (Educational) | 68.5 dBA | 82.0 dBA (Buses passing) | 50.0 dBA | Excess by +18.5 dBA (Classrooms severely disrupted) |
| Vegetable Market / Bazaar (Commercial) | 78.4 dBA | 89.0 dBA (Vendors & crowds) | 65.0 dBA | Excess by +13.4 dBA (Auditory fatigue) |
| Major Traffic Junction (Intersection) | 86.8 dBA | 96.4 dBA (Modified exhausts) | 65.0 dBA | Excess by +21.8 dBA (Hazardous to hearing) |
| Residential Colony (Inner lane) | 58.2 dBA | 71.0 dBA (Delivery bikes) | 55.0 dBA | Excess by +3.2 dBA (Marginal evening elevation) |
The field study and investigation of Project 24 focuses on the following key environmental observations and highlights:
A comprehensive analysis of Project 24 reveals crucial insights regarding acoustic pollution and local ecological resilience. By examining empirical data collected in the field, students understand the direct impact of human activity on ecosystems and learn practical conservation strategies applicable to Maharashtra's local environment.
Noise is an insidious, invisible killer. Because the human ear cannot shut off sound, chronic decibels over-stimulate the cardiovascular and nervous systems, triggering chronic hypertension, sleep deprivation, and permanent hearing loss in urban citizens.
To secure full marks (30/30) in your internal project evaluation, structure your handwritten project file in the following official order:
Because human hearing spans a massive pressure range; an increase of 10 dB represents a tenfold increase in sound intensity and a doubling of perceived loudness.
An area comprising not less than 100 meters around hospitals, educational institutions, courts, and religious shrines where blowing vehicle horns is legally prohibited.
50 dBA during day hours (6 AM to 10 PM) and 40 dBA during night hours (10 PM to 6 AM).
A distressing medical condition characterized by persistent ringing, buzzing, or hissing sounds in the ears, caused by prolonged exposure to loud sound destroying delicate cochlear hair cells.
Dense rows of trees with broad, thick leaves (like Banyan, Ashoka, Neem) reflect, absorb, and scatter sound waves, dampening noise levels by 5 to 10 dB.