CRUST - THE TOP LAYER OF THE EARTH WHICH IS ABOVE THE MANTLE

ERUPTIONS - THE ACT OF BURSTING FORTH

LAVA - MOLTEN ROCK

MAGMA - THE MOLTEN MATERIAL BENEATH THE EARTH

MANTLE - THE MIDDLE LAYER OF THE EARTH, BETWEEN THE CRUST AND THE CORE

PLATE - A LARGE SECTION OF THE EARTH'S SURFACE INCLUDING THE EARTH'S CRUST AND THE RIDGID TOP PART OF THE MANTLE

PLATE BOUNDARIES - THE PLACE WHERE THE PLATES MEET

ROCK FRAGMENTS - BITS OF HOT ROCK

VOLCANO - AN OPENING IN THE EARTH'S SURFACE