Which of these sources would cause the most noise pollution ?

Options

A. Table saw : 105 dB
B. City traffic : 80 dB
C. Rocket launch : 180 dB
D. Bursting of firecrackers : 140 dB

Answer

To determine which source causes the most noise pollution, we need to compare the decibel levels of each source provided in the question. Here's a step-by-step solution:

### Step 1: Understand Decibel Levels
Decibels (dB) are a unit used to measure the intensity of sound. The higher the decibel level, the louder the sound. Sounds above 80 dB are generally considered noise pollution.

### Step 2: List the Sources and Their Decibel Levels
- Tablesaw: 185 dB
- City Traffic: 80 dB
- Rocket Launch: 189 dB
- Busting of Fire: 140 dB

### Step 3: Identify the Loudest Source
Now, we need to identify which of these sources has the highest decibel level:
- Tablesaw: 185 dB
- City Traffic: 80 dB
- Rocket Launch: 189 dB
- Busting of Fire: 140 dB

### Step 4: Compare the Decibel Levels
From the list, we can see that:
- Rocket Launch (189 dB) is the loudest.
- Tablesaw (185 dB) is the second loudest.
- Busting of Fire (140 dB) is next.
- City Traffic (80 dB) is the least loud.

### Step 5: Conclusion
Since the Rocket Launch has the highest decibel level at 189 dB, it would cause the most noise pollution.

### Final Answer
The source that would cause the most noise pollution is the **Rocket Launch**.

---