Question 2: Silicon atoms are in tetrahedral coordination with oxygen, as in almost all ________, but in melts atomic order is preserved only over short distances.
Question 3: While the study of magma has historically relied on observing magma in the form of lava outflows, magma has been encountered ________ three times during drilling projects—twice in Iceland, and once in Hawaii.
Question 5: Magma is capable of intrusion into adjacent rocks, extrusion onto the surface as ________, and explosive ejection as tephra to form pyroclastic rock.
Question 9: When rocks melt they do so incrementally and gradually; most rocks are made of several minerals, all of which have different melting points, and the ________ that control melting are often complex.
Question 10: Temperatures of most magmas are in the range 700 °C to 1300 °C (or 1300 °F to 2400 °F), but very rare ________ melts may be as cool as 600 °C, and komatiite melts may have been as hot as 1600 °C.
Wikis
Quiz
Facts
Map
Misc
Search
