An air mass in a valley travels up a mountainside. What causes the movement of this air?
tidal pull of the moon's gravity evaporation of water from soil in the valley warming by solar energy re-radiated from the ground cooling effect of ice crystals in the air over the mountain
Question: An air mass in a valley travels up a mountainside. What causes the movement of this air?
A. tidal pull of the moon's gravity
B. evaporation of water from soil in the valley
C. warming by solar energy re-radiated from the ground
D. cooling effect of ice crystals in the air over the mountain
Answer: