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Spin the wheel with the underwater-themed random student selector tool 🌀 Make a splash while your choice is made! 💦 Fun fact: The ocean is home to the largest and longest mountain range on Earth, known as the Mid-Atlantic Ridge. This underwater mountain range spans over 40,000 miles (64,000 kilometers) across the Atlantic Ocean, from the Arctic Ocean in the north to the Southern Ocean in the south. What makes the Mid-Atlantic Ridge particularly fascinating is that it is a divergent tectonic boundary where two of the Earth's major tectonic plates, the North American Plate and the Eurasian Plate, are moving away from each other. This movement causes the seafloor to spread apart and create a rift, resulting in the formation of underwater mountains and valleys. Despite its enormous size and significance in plate tectonics, much of the Mid-Atlantic Ridge remains unexplored and mysterious due to its remote location beneath the ocean's depths. It serves as a reminder of the hidden wonders and geological processes that shape our planet beneath the waves. For 49 more themes to choose from, including a coral reef theme, click here.