Volcanic Eruptions Ms. Pilcher. Vocabulary Mafic lava- dark in color and is rich in magnesium and iron. Felsic lava- lighter in color when cools, high.
Volcanoes. 7.1 Volcanoes and Plate Tectonics Magma – hot liquid rock Volcanism – movement of magma toward suface Lava – magma on the surface Vent.
