Wind is caused by differences in atmospheric pressure, which result from the uneven heating of the Earth's surface by the sun. Warm air rises and expands, creating lower pressure areas, while cooler air sinks and creates higher pressure areas. Air moves from high-pressure to low-pressure regions, generating wind. Additionally, the Earth's rotation affects wind patterns through the Coriolis effect, causing winds to curve instead of moving in straight lines.

Causes of Wind

• Uneven heating of the Earth's surface due to the sun causes temperature differences.
• Warm air rises in warmer regions, creating low pressure.
• Cooler air sinks in cooler regions, creating high pressure.
• Air moves from high to low pressure, causing wind.

Influencing Factors

• The Earth's rotation (Coriolis effect) causes winds to curve.
• Local geography like land, water, mountains, and urban areas can affect wind speed and direction.
• Daily heating and cooling cycles also contribute to local wind patterns like sea breezes.

Thus, wind fundamentally originates from the sun’s uneven heating of the Earth's surface combined with the dynamics of atmospheric pressure and the planet's rotation.