Answer :
1. The area in the center with low pressure compared to the surrounding area is known as a Low Pressure Area. Air moves towards the center of the low-pressure system and rises when they meet. This leads to cloud formation and often precipitation.
2. The winds coming from equatorial oceans that bring warm air and heavy rains are called Southwest Monsoon winds. These winds carry moisture from the oceans and bring rainfall to regions they pass over, leading to the wet season in many areas.
3. Air masses from cold areas like Siberia and Mongolia tend to go down because cold air is heavier than warm air. The cold, dense air sinks due to its weight, displacing the warmer, lighter air which rises. This movement contributes to the circulation of air masses in the atmosphere.
4. A weather pattern or seasonal change in wind direction is known as a Monsoon. Monsoons are characterized by a reversal in wind direction, bringing distinct weather patterns such as heavy rainfall during the wet season. Monsoons play a crucial role in shaping the climate of many regions around the world.