Final answer:
Tropical and equatorial air masses are hot as they develop over lower latitudes due to factors such as temperature differences and solar radiation. These regions experience warmer temperatures and promote evaporation, which affects global precipitation and climate patterns.
Step-by-step explanation:
Tropical and equatorial air masses are hot as they develop over lower latitudes. Temperature falls from the equator to the poles, so areas closer to the equator experience warmer temperatures. Additionally, these regions receive more direct sunlight, which increases the heating of the air masses. The warm temperatures in tropical and equatorial regions also promote evaporation, which affects global precipitation and climate patterns.