Science Review M2 Q3 advance learning

• Active Volcano - At least erupted once during the past 10,000 years.
• Dormant Volcano - Active volcano that is not erupting but supposed to erupt again.
• Inactive Volcano - A volcano that could erupt but has no erupted for the past 10,000 years.
• Extinct Volcano - No longer active or capable of eruption.
• Lava - Molten rock ejected by a volcano.
• Volcanic Eruption - The release of magma from within the earth's crust through an opening on its surface.
• Volcanic Eruption - The release of magma from a volcano.
• Mafic Magma - Does not erupt explosively but it instead flows out of volcanoes and moves quickly on the surface.
• Intermediate Magma - Intermediate magma builds up in magma chambers below the surface before exploding violenty as lava.
• Felsic Magma - Traps gas bubbles that result in massive explotions that blow peaks off mountain.
• Pheatric or Hydrothermal - An eruption driven by the heat from magma interacting with water.
• Pheatomagmatic - An eruption resulting from interaction of new magma or lava with water. Can be very explosive.
• Strombolian and Hawaiian - Least violent type of explosive eruption. Hawaiian eruptions have fire mountains and lava flows. Strombolian eruptions have explotions causing a shower of lava fragments.
• Vulcanian - Small to moderate explosive eruptions, lasting seconds to minutes. Ash columns can reach the height of 20 km.
• Plinian - Most explosive and largest type of volcanic eruptions.