These famous islands are actually large shield volcanoes.
What are the Hawaiian Islands?
100
These typically form on or near composite volcanoes.
What is a lava dome?
100
Composite volcanoes are also called this because of its characteristic layering of rock.
What is a stratovolcano?
100
Volcanoes that haven't erupted in a long time, but could still erupt at any time are considered to be this.
What is a dormant volcano?
100
These igneous rocks are formed inside the Earth.
What are intrusive igneous rocks?
200
The shield volcano was named after these battlefield relics of long ago.
What is a warrior shield?
200
These are solid lava fragments that pile up in the shape of a cone.
What are cinders?
200
Volcanoes are classified in these four catagories.
What is height, shape, magma type and eruption?
200
These volcanoes have erupted recently and are therefore categorized as these.
What is an active volcano?
200
These igneous rocks are formed outside of the Earth.
What are extrusive igneous rocks?
300
These bulbous formations can be found on the ocean floor after the cool ocean water reacts with hot magma.
What is pillow lava?
300
These are both considered secondary volcanoes.
What are lava domes and cinder cones?
300
These type of eruptions are common with composite volcanoes.
What are explosive eruptions?
300
Mt. Saint Helens' eruption could be described as this type of eruption.
What is an explosive eruption?
300
These are considered the largest intrusive igneous rock bodies.
What are batholithes?
400
These type of eruptions are typically associated with shield volcanoes.
What are slow-flowing eruptions?
400
Unlike lava domes, cinder cones are typically found near these primary volcanoes.
What is a shield volcano?
400
This composite volcano erupted violently in AD 79, burying the two Roman cities of Pompeii and Herculaneum. (Clue: starts with a V. )
What is Mt. Vesuvius?
400
These typically form by the collapse of land following a volcanic eruption.
What is a caldera?
400
These form when magma is squeezed into mostly vertical cracks of rock and hardens.
What are dikes?
500
This area or "zone" typically creates shield volcanoes, although they can also be found in subduction zones. Scientists developed this theory to explain why some volcanoes were formed away from plate boundaries.
What is a hot spot zone?
500
The magma in lava domes are high in this content, which prevents lava from flowing very far.
What is silica?
500
Composite volcanoes are common at these zones, where one plate is forced under another.
What is a subduction zone?
500
These form when magma cools and hardens inside the volcanic vent and are exposed by erosion of the surrounding rock.
What are volcanic necks?
500
Besides forming volcanoes, tectonic plate movement can also cause these natural disasters.