Volcanoes Flashcards
What is a volcano
A mountain formed by the eruption of magma on earths surface
What does silica do to magma
Makes it thicker and more explosive
Where do volcano eruptions happen
Where plates collide,at hot spots and where plates separate.
Where are most volcanoes found
The pacific ring of fire
What is a mid ocean ridge
A rich in the middle of the ocean where plates pull apart then magma comes up to fill the gap this creates a lot of underwater volcanic mountains e.g. the mid-Atlantic ridge
What are The three life stages of a volcano
Dormant Active extinct
What is an active volcano?
An active volcano is a volcano that is continuously erupting, e.g. Mount etna
What is a dormant volcano?
A dormant volcano is a volcano that is not erupted in a while, but will still erupt example Mt St Helens
What is an extinct volcano?
An extinct volcano is a volcano that has not a raft in and at least 10,000 years and will not erupt again for example Mount Slemish
What is a someone who studies monitors and predict volcanic activities called
A volcanologist
What is used to measure the force of eruptions?
Volcanic explicit activity index or VEI is used to measure the force of eruptions
When did the volcano E15 erupt?
The volcano E1 erupted on April 14, 2010
Where is the volcano E 15
Scissile
