Volcanoes Flashcard

Front

What is a volcano?

Back

A mountain with a hole on top where hot melted rock erupts from the earth

Front

What is it called when lava, rocks, materials, and ash violently burst out of a volcano?

Back

volcanic eruption

Front

What is the primary cause of a volcanic eruption?

Back

Pressure from gases within the magma

Front

What is a mound on a volcano that can be a sign of impending eruption?

Back

Bulge

Front

What is magma?

Back

Melted rock under Earth's surface

Front

What is magma called once it reaches the Earth's surface?

Back

lava

Front

When lava, from a volcano, cools, it creates?

Back

new crust

Front

Where are most volcanoes located?

Back

Along the Ring of Fire

Front

Volcanologist

Back

A geologist who studies the formation and eruptive activities of volcanoes.

Front

What was the name of the largest volcanic eruption in the United States?

Back

Mount St. Helens eruption in 1980