Final Jeopardy
This is the location on the surface of the Earth above where the earthquake occurs.
What is the epicenter?
If a large earthquake occurs near an island, one of these can be triggered.
What is a tsunami?
This is the name of the machine that geologists use to measure earthquake activity.
What is a seismometer?
Obsidian is an example of this type of rock.
What is an igneous rock?
Pumice can float on water because these form inside it when lava cools rapidly in ocean water.
What are air bubbles?