I WONDER - What Are Tectonic Plates?

The video explains the Earth's lithosphere, which consists of the crust and part of the upper mantle. It describes how tectonic plates, which are about 100 kilometers thick, move slowly on the Earth's mantle. There are two main types of tectonic plates: oceanic and continental. Oceanic plates are found under the ocean floor and are made of silicon and magnesium, while continental plates lie beneath the land and are composed of silicon and aluminum.

What is the composition of oceanic plates?

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How do continental plates differ from oceanic plates?

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