Types of Volcanoes
What type of volcano has broad, gently sloping sides and is built from fluid lava flows?
Shield Volcano
What is the term for molten rock before it erupts from a volcano?
Magma
What type of plate boundary causes most volcanoes to form?
Convergent Boundary
What famous Italian volcano destroyed the city of Pompeii in 79 AD?
Mount Vesuvius
What is the name of the fast-moving current of hot gas and volcanic material that can destroy everything in its path?
Pyroclastic Flow
What type of volcano is made of alternating layers of lava and ash and has steep sides?
Composite or Stratovolcano
What do we call lava when it reaches the Earth's surface?
Lava
What is the name of the region around the Pacific Ocean with many volcanoes?
Ring of Fire
What is the name of the Hawaiian volcano that is the largest active volcano on Earth?
Mauna Loa
What do we call a mix of ash, mud, and water that flows like a river after an eruption?
Lahar
What is the name of a small, steep volcano that erupts explosively and is made of loose cinders?
Cinder Cone Volcano
What type of volcanic eruption is the most explosive, releasing ash, gas, and pyroclastic flows?
Plinian Eruption
When an oceanic plate sinks beneath another plate, what is this process called?
Subduction
What volcano erupted in 1980 in Washington, USA, causing massive destruction?
Mount St. Helens
What volcanic gas, when released into the atmosphere, can cause acid rain?
Sulfur Dioxide - SO₂
Which type of volcano is formed from lava that is too thick to flow far, creating a dome shape?
Lava Dome Volcano
What is the name of a supervolcanic eruption that could have worldwide climate effects?
Supereruption
What type of volcano forms away from plate boundaries, like those in Hawaii?
Hot Spot Volcano
What supervolcano lies beneath Yellowstone National Park?
Yellowstone Caldera
What is the term for tiny fragments of rock that can block sunlight and damage lungs?
Volcanic Ash
What is the largest volcano in the solar system, located on Mars?
Olympus Mons
What is the term for a volcano that has not erupted in a long time but could erupt again?
Dormant Volcano
What is the name of the process where magma rises through cracks in a divergent boundary?
Seafloor Spreading
What Indonesian volcano erupted in 1815, causing the “Year Without a Summer”?
Mount Tambora
What phenomenon occurs when volcanic ash clouds disrupt air travel?
Ash Cloud Disruption