Which type of volcanic eruption is characterized by the interaction of magma and water?

What is the name of the largest volcanic lake in the world? Which of the following volcanoes is located in the Cascade Range in Oregon, USA? What is the name of the volcanic region in Italy that is home to Mount Vesuvius? Which of the following volcanoes is located in the Galapagos Islands, Ecuador? What is the name of the volcano that is the highest peak in Japan? Which igneous rock forms from the slow cooling of magma deep underground? What is the name of the largest volcanic caldera in Indonesia? What is the name of the largest active volcano on Earth, located in Hawaii?