Volcano Types
Stratovolcanoes appear as tall ______ mountains.
steep
What happens FIRST during a volcanic eruption?
The molten rock stored in the magma chamber rises through the crater vents.
Volcanoes are scattered across the planet. About _______ active volcanoes can be found across the world.
1,500
Whether on land or underwater, volcanoes are located where ________________ meet.
tectonic plates
Shield Volcanoes are flatter and _____-shaped.
dome
What happens SECOND in a volcanic eruption?
The molten rock travels up the main vent and gases expand. This water becomes steam, creating pressure.
The Ring of Fire contains about _______ of the planet's volcanoes.
75%
There are several types of of volcanoes classified by ______ and ______.
shape and size
Calderas are large depressions in the _______.
ground
What happens LASTLY during a volcanic eruption?
When the pressure can no longer be contained, the volcano may explode with a huge BANG!
Lava can reach temperatures of over _______ degrees farenheit.
2,000
Once magma is above ground, it is called _______.
LAVA
Mid-Ocean Ridges are _________ chains of volcanic mountains.
underwater
What is the searing hot gas and hot ash that erupt from the volcano and race down the sides burning everything in its path?
Pyroclastic flow
The Ring of Fire has _______ volcanoes.
452
To measure volcanic eruptions, scientists developed the Volcanic _________ Index
Explosivity
In our reading, we learned there are stratovolcanoes, shield volcanoes, and __________________.
cinder cone volcanoes
All volcanoes emit gas and molten rock. The journey of these emissions begins deep underground in the earth's _______.
CORE
The most destructive volcanic eruption ever witnessed occurred in Indonesia in 1815, it erupted with a VEI of _____.
7
Volcanic _____ provides nutrients to nearby soil, making the land fertile.
ash
BONUS +100: Lava when it cools hardens into rock and creates new ___forms.