If you blow over the top of a small strip of paper, the paper bends upward. Why?

Explanation

To understand why a small strip of paper bends upward when you blow over it, we can break down the explanation into clear steps:

### Step-by-Step Solution:

1. **Understanding Airflow**: When you blow air over the top of a small strip of paper, you create a flow of air.

2. **Increase in Air Velocity**: As you blow, the velocity of the air moving over the top of the paper increases. According to Bernoulli's principle, when the speed of a fluid (in this case, air) increases, the pressure within that fluid decreases.

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