3rd Quarter Review (Science)

• Magma is molten rock beneath Earth's surface
• Parasitic Cone is a small cone-shaped volcano formed by an accumulation of volcanic debris
• Sill is a flat piece of rock formed when magma hardens in a crack in a volcano
• Vent is an opening in Earth's surface through which volcanic materials escape
• Flank the side of the volcano
• Lava is molten rock that erupts from a volcano and solidifies as it cools
• Crater is the mouth of a volcano that surrounds a volcanic vent
• Conduit an underground passage that magma travels through
• Summit is the highest point or apex
• Throat is the entrance of a volcano, the part of the conduit that ejects lava and volcanic ash
• Ash consists of fragments of lava or rock smaller than 2 mm in size that are blasted into the air by volcanic explosions
• Ash Cloud is a cloud of ash formed by volcanic explosions