Volcano Types
This type of volcano has a non-explosive lava flow and is characterized by having large, wide dome shaped slopes.
Shield volcano
What is the name for the substance beneath Earth's surface that erupts through a volcano?
Magma
The term "quiet" refers to what type of eruption?
Effusive
This stage of volcanic action refers to a volcano that is still "alive" or currently erupting.
Active Volcano
Where is Mt. St Helen's volcano located?
Washington State - U.S.
This type of volcano has very steep sides that are formed by ash, pumice and cinders. It is also the most common and referred to as the smallest type of volcano.
Cinder Cone Volcano
What is the name for magma that escapes from a volcano and reaches the Earth's surface?
Lava
Shield volcanoes usually have this type of eruption.
Effusive
This type of volcano is often referred to as "sleeping." It has erupted in the past but currently it is taking a nap and will potentially erupt in the future.
Dormant Volcano
Where is Mt. Vesuvius is located?
Pompeii, Italy
This type of volcano looks like a piece of Roman or ancient war armor when it is viewed from above.
Shield Volcano
What is the primary difference between magma and lava?
Location - inside/under the surface = magma
- outside/expelled from the volcano = lava
Mt. St Helen's, a volcano located within the continental U.S. is known for having what type of eruption?
Explosive
This type of volcano has not erupted for hundreds, if not thousands of years. It was once active, but it is NOT likely that it will ever erupt again.
Extinct Volcano
What is the largest, most active volcano on Earth and where is it located?
Mauna Loa, Hawaii
Which type of volcano is Mt. St Helen's?
Composite Volcano
Which is hotter; lava or magma?
Magma - because it is under the surface and has yet been exposed to the elements.
What is a pyroclastic flow?
Fast-moving current of volcanic gas, ash, pumice and hot lava that can reach speeds of over 100 kilometers per hour and can reach temperatures exceeding 600 degrees C!
True or False. The Mauna Loa volcano is known as an extinct volcano and does not erupt anymore.
This specific type of plate boundary, where two plates collide and one subducts beneath the other, is primarily responsible for Cinder Cone volcanoes.
Convergent Boundary
What is the main difference between a cinder cone and a composite volcano?
The cinder cone volcano has an alternating lava flow.
Does magma or lava cool faster?
Lava cools faster because it has been expelled from the volcano and exposed to the elements.
In A.D. 79, a great volcano exploded in Pompeii. What type of eruption did Mt. Vesuvius have?
Explosive
A volcano that ceases to erupt and eventually eroded, leaving behind only remnants of its original structure, is known as what type of volcano?
Extinct Volcano
The 1883 eruption of the volcano "Krakatoa" was so powerful that it produced shock waves heard around the world and caused global temperatures to drop for years. Where was this volcano located?
Indonesia