Glossary

Glossary Typhoon A Typhoon is another word for a hurricane. Vulcanologist A vulcanologist is someone who studys volcanoes Maelstrom A maelstrom is another word for whirlpool.Maelstroms are made by colliding currents and strong downdrafts. A'a lava A'a lava is basaltic lava flow with a rough, jagged surface. Caldera A caldera is a huge crater made by the collapse of a magma chamber