When you blow some air above a paper strip, the paper rises. This happens because
A) the air above the paper moves slower and the pressure is lower.
B) the air above the paper moves slower and the pressure is higher.
C) the air above the paper moves faster and the pressure remains constant.
D) the air above the paper moves faster and the pressure is higher.
E) the air above the paper moves faster and the pressure is lower.

Question

Quizplus · Accepted Answer

This phenomenon is explained by Bernoulli's principle, which states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure. When you blow air over a paper strip, the air moves faster above the paper, leading to lower pressure compared to the relatively higher pressure beneath the paper. This pressure difference causes the paper to rise.

When You Blow Some Air Above a Paper Strip, the Paper