The Ring of Fire refers to the volcanoes that are located around the borders of the Pacific Ocean and
surrounding continents.
What is a volcano is an opening in the Earth's crust where magma erupts to the surface.
Magma - molten hot liquid rock while it is still below the Earth's surface
Lava - molten hot liquid rock once it erupts to the Earth's surface
Igneous rock - rocks are formed when lava from a volcano cools
dormant volcano - A volcano that has not erupted in a long time, but may erupt again
Shield volcanoes - volcanoes form from wide thin layers of lava
Lava domes - type of volcanoes can sometimes form inside another volcano
Cinder Cones - are formed from lava ejected from a single vent at the top, but they don't get taller than
around 1,000 feet
Composite volcanoes - volcanoes are formed over many years and can grow to mountains of over 8,000
feet tall.
Mars - tallest volcano in the Solar System
A shield volcano was formed from magma with ________ silica and _______ viscosity
Low, low
A composite volcano was formed from magma with ________ silica and _______ viscosity.
High, high
The release of magma from a volcano
Eruption
magma chamber - The area below the crust where magma is stored
Vents - Exit points on a volcano for the release of magma
Shield - type of volcano has a gentle eruption with oozing lava flows
Composite - type of volcano has violent eruptions with alternating layers of lava flow and volcanic
particles
Hotspots - . Volcanoes can form in the middle of tectonic plates
Crater - forms at the top of a volcano after an eruption
Earth needs volcanoes because volcanoes - help Earth release internal heat and pressure
Volcanic eruptions cause destruction, but they are also - beneficial because they provide usable minerals
Ring of Fire - Volcanoes are common in the northwest part of the United States because that area is part
of the
Volcanologist - A scientist who studies volcanoes is called a
Shield - What type of volcano has a gentle eruption