Which of the following is NOT true about minerals- all minerals are ma.pdf

Which of the following is NOT true about minerals? all minerals are made naturally some
minerals precipitate from seawater minerals can be organic minerals are homogenous and can be
expressed as a chemical formula Which of the following methods can a mineral form/crystallize?
bonding carbon atoms to oxygen to form organic compounds solidification of water melting of
steel precipitation from a gas What type of melting occurs at subduction zones when the
subducting plate contains water and other volatile substances? flux decompression heat transfer
all of the above Which type of magma would be the LEAST viscous? magma with low silica
content magma with high silica content magma with low temperature viscosity is not determined
by silica content or temperature Describe this rock texture. (You are looking at a rock under a
microscope). glassy crystalline clastic metallic Which of the following would you NOT expect to
occur when an effusive volcano erupts? formation of a volcano with gentle slopes (i.e. shield
volcano) formation of basalt from lava with low viscosity lava to travel/flow for tens of
kilometers formation of large ash cloud Which of the following are associated with explosive-
style volcanic eruptions? shield volcanos low viscosity lava large ash clouds volcanic fissures
Which of the following signs would you interpret as being potentially dangerous and therefore
lead you to conclude that a volcano may erupt? changes in shape unusual vegetation decrease in
gas and stream emission strong thunderstorms Which of the follow is a source of physical
weathering? biological activity in soils precipitation wind all of the above When describing
sedimentary rocks, which characteristics should you report? cleavage luster grain size magnetism
Immature sediments have which of the following characteristics? rounded well-sorted do not
contain clay poorly sorted Which of the following are NOT found on the beaches of Southwest
Florida? biological deposits (shells) quartz sand well-sorted sands clay-rich sediments.

1. Which of the following is NOT true about minerals? all minerals are made naturally some
minerals precipitate from seawater minerals can be organic minerals are homogenous and can be
expressed as a chemical formula Which of the following methods can a mineral form/crystallize?
bonding carbon atoms to oxygen to form organic compounds solidification of water melting of
steel precipitation from a gas What type of melting occurs at subduction zones when the
subducting plate contains water and other volatile substances? flux decompression heat transfer
all of the above Which type of magma would be the LEAST viscous? magma with low silica
content magma with high silica content magma with low temperature viscosity is not determined
by silica content or temperature Describe this rock texture. (You are looking at a rock under a
microscope). glassy crystalline clastic metallic Which of the following would you NOT expect to
occur when an effusive volcano erupts? formation of a volcano with gentle slopes (i.e. shield
volcano) formation of basalt from lava with low viscosity lava to travel/flow for tens of
kilometers formation of large ash cloud Which of the following are associated with explosive-
style volcanic eruptions? shield volcanos low viscosity lava large ash clouds volcanic fissures
Which of the following signs would you interpret as being potentially dangerous and therefore
lead you to conclude that a volcano may erupt? changes in shape unusual vegetation decrease in
gas and stream emission strong thunderstorms Which of the follow is a source of physical
weathering? biological activity in soils precipitation wind all of the above When describing
sedimentary rocks, which characteristics should you report? cleavage luster grain size magnetism
Immature sediments have which of the following characteristics? rounded well-sorted do not
contain clay poorly sorted Which of the following are NOT found on the beaches of Southwest
Florida? biological deposits (shells) quartz sand well-sorted sands clay-rich sediments