You have just set up a weather station for your daughter to observe wind speeds at home. You had to move it up from the ground because when it was too close to the ground the wind speed readings are all too small. This is because
A) The air near the ground is too dense to move well.
B) The ground is hot so air movement there is always upward, never sideways.
C) The boundary layer of a moving fluid moves slower than at other points farther into the fluid.
D) Someone kept stepping on the wind speed gauge.

Question

Quizplus · Accepted Answer

The boundary layer concept explains that the layer of fluid (in this case, air) directly in contact with the surface (ground) moves slower than the layers above it due to friction between the fluid and the surface. This results in lower wind speed readings close to the ground.

You Have Just Set Up a Weather Station for Your