<human>:  Why did the Titanic sink?
<bot>: The Titanic sank because it hit an iceberg. Icebergs are large chunks of ice that break off of glaciers and float around in the ocean. They can be up to 100 meters long and 10 meters wide. They are usually white or light gray in color, but can be any color depending on their origin. Icebergs are very dangerous because they can cause damage to a ship's hull and propellers.