Final answer:
Tectonic plates move due to convection currents in the mantle, influenced by the Earth's core heat, leading to geological activities.
Explanation:
Tectonic plates move around due to convection currents in the mantle caused by the heat from the core. This movement leads to geological activities like earthquakes, volcanoes, and mountain building. The theory of plate tectonics explains how the plates interact at various boundaries.
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