Note: While exact question numbering varies depending on the specific IELTS practice test version (such as Cambridge books or localized mock tests), the passage typically utilizes three distinct question types: Matching Information, True/False/Not Given, and Diagram/Summary Completion. Part 1: Information Matching

Iceland is often called the land of fire and ice because it hosts both active volcanic systems and vast ice caps. When a volcano erupts beneath a glacier, the interaction is explosive. The heat melts the ice instantly, creating a large volume of water. If this water cannot drain slowly, it bursts out in a catastrophic flood known as a jökulhlaup. These floods carry house-sized ice blocks and sediment. Moreover, the rapid cooling of lava by ice produces unique rocks like hyaloclastite. Scientists study these deposits to reconstruct past climates. A famous example is the 2010 eruption of Eyjafjallajökull, which, although not powerful, sent ash into the jet stream, halting European air traffic for weeks.

Volcanic eruptions under ice sheets are a recent phenomenon caused by global warming.