Description:
The correct answer is:
✅ Differences in air pressure
Why?
Wind is caused by air moving from high-pressure areas to low-pressure areas, driven by:
Pressure Gradient Force: Air flows from high → low pressure (like a balloon deflating).
Coriolis Effect: Earth’s rotation twists wind direction (right in the N. Hemisphere, left in the S.).
Friction: Surface terrain slows winds near the ground.
Why Not the Others?
❌ Water pressure: Affects ocean currents, not wind.
❌ Humidity: Influences air density but doesn’t directly cause wind.
Fun Fact: The strongest winds (non-tornadic) hit 231 mph on Mount Washington (1934)! 🌬️🏔️
Bonus: Wind turbines harness this pressure-driven motion for clean energy! 💨⚡