VOLCANIC ACTIVITY 1. WHAT IS A VOLCANO ? A volcano is a rupture on the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic.
What causes a Volcano? Volcanic activity often starts when a crack develops in the crust. Magma is then forced toward the surface. Repeated eruptions.
Plate Tectonics
VOLCANOES 21.2 What is a volcano? Volcano: opening in the Earth’s crust where magma erupts onto the surface Magma: molten rock underground Lava: magma.
Jeopardy! Volcanoes
