Why do sand grains saltating in air "jump" higher than sand grains saltating in water?
A)because air flow is more laminar than water flow
B)because air is denser than water
C)because air is less viscous than water
D)because air is warmer than water

Question

Quizplus · Accepted Answer

Sand grains saltate higher in air than in water primarily because air is less viscous than water. Lower viscosity means less resistance to the movement of the sand grains, allowing them to jump higher.

Why Do Sand Grains Saltating in Air "Jump" Higher Than