Final answer:
Tectonic plates are large, rigid pieces of the Earth's lithosphere that fit together like a jigsaw puzzle and constantly shift, leading to geological activity such as earthquakes and volcanic eruptions.
Step-by-step explanation:
Tectonic plates are large, rigid pieces of the Earth's lithosphere that fit together like a jigsaw puzzle. There are several major tectonic plates, including the Pacific Plate, North American Plate, Eurasian Plate, and African Plate. These plates float on the semi-fluid asthenosphere beneath them and are constantly shifting and interacting, leading to phenomena such as earthquakes, volcanic activity, and the formation of mountain ranges.
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