Flashcards in Diamonds and Volcanoes Deck (9):
What is a volcano?
A volcano is a rupture) on the crust) of a planetary mass object, such as the Earth, which allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.
Where are volcanoes typically found?
Earth's volcanoes occur because the planet's crust is broken into 17 major, rigid tectonic plates that float on a hotter, softer layer in the Earth's mantle. Therefore, on Earth, volcanoes are generally found where tectonic plates are diverging or converging.
What is an erupting volcano?
An erupting volcano is an active volcano that is having an eruption...
What is a dormant volcano?
A dormant volcano is an active volcano that is not erupting, but supposed to erupt again.
What is an extinct volcano?
An extinct volcano has not had an eruption for at least 10,000 years and is not expected to erupt again in a comparable time scale of the future.
How do diamonds get to the surface of the earth?
Volcanoes - that's how. When volcanoes erupt, sometimes diamonds are thrown out of the top in the lava or are left in pipe, the central, vertical part of the volcano.
What is kimberlite?
The best place to find diamonds is in the center of an extinct volcano, in a type of rock called kimberlite.
Where does the word volcano derived from?
"Vulcano" a volcanic island in Italy.