why are there islands on Earth?

It's the school holiday, and Frank, Ziye, and Joshua came to an island called Bintan in Indonesia. While exploring, they ask: Why are there islands on Earth? In this episode of Science Uncovered, the trio uncovers the science behind island formation, from volcanic eruptions and tectonic plates to coral reefs and ocean currents. Tune in to learn the fascinating story of how islands like Bintan are formed!