If you squeeze a balloon in the middle, what happens to the air pressure inside the balloon ?

Options

A. It increases only in the middle.
B. It decreases only in the middle.
C. It increases throughout.
D. It decreases throughout.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Balloon and Air Inside**:
- When a balloon is filled with air, it contains air molecules that are in constant motion. The space inside the balloon is the volume that the air occupies.

2. **Squeezing the Balloon**:
- When you squeeze the balloon in the middle, you are effectively reducing the volume of the space that the air can occupy.

3. **Applying Boyle's Law**:
- Boyle's Law states that for a given mass of gas at constant temperature, the pressure of the gas is inversely proportional to its volume. This can be expressed as:
\[ P \propto \frac{1}{V} \]
- This means that if the volume (V) decreases, the pressure (P) must increase.

4. **Effect of Decreased Volume**:
- By squeezing the balloon, you decrease the volume of the air inside. According to Boyle's Law, this decrease in volume leads to an increase in pressure.

5. **Pressure Distribution**:
- The increase in pressure is not localized; it affects the entire volume of air inside the balloon. As the air molecules are forced closer together, they collide more frequently, resulting in an overall increase in pressure throughout the balloon.

6. **Conclusion**:
- Therefore, when you squeeze a balloon in the middle, the air pressure inside the balloon increases throughout.

**Final Answer**: The air pressure inside the balloon increases when you squeeze it in the middle.

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