The pattern observed in the distribution of active volcanoes on Earth is that most of them are located along the edges of tectonic plates, especially in areas where plates meet or collide.One major pattern is the "Ring of Fire", a horseshoe-shaped zone around the Pacific Ocean where many active volcanoes are found. This includes countries like Japan, the Philippines, Indonesia, and parts of North and South America. Active volcanoes are usually near subduction zones, rift zones, or hotspots, showing a strong link between volcanic activity and Earth's plate movements.