Geology Fragen

softer part of the mantle below the lithosphere

Boundary type where two plates come together

Man who came up with the idea of Pangea and Continental drift

type of evidence of organisms found in rock on seperate land forms that once connected

Tectonic plates being pushed together =

The outer core is liquid while the inner core is

What is the name of the rock and type that composes continental crust

What is the name of the rock and type that composes oceanic crust

What's more thick continental crust or oceanic crust?

What causes minerals to have different physical properties

Majority of earthquakes and volcanoes occur at

You need at least how many seismic stations to locate the epicenter of an earthquake?

Increases volcanic and earthquake activity around the pacific plate is the

How do most oceanic islands and seamounts form? A. they are small pieces rifted apart from continentsB. they are places where the seafloor has been buckled upward by convergenceC. they are constructed by volcanic eruptions that first occur under waterD. they are large fan-shaped mounds deposited by turbidity currents

What is a popular model for the formation of an atoll? A. a moderate-sized meteoroid forms a circular crater on the seafloorB. a volcanic eruption forms a large circular calderaC. a volcanic island forms and subsidesD. a barrier reef becomes buried by volcanic eruptions

What processes can occur in front of or behind some island arcs? A. trench rollbackB. back-arc riftingC. fold and thrust belts in the mountainsD. formation of an oceanic plateauE. a and b only

In the Atlantic Ocean, where is the oldest oceanic crust? A. mid-ocean ridgesB. abyssal plain next to the continentsC. oceanic trenchesD. seamountsE. continental shelves close to the shoreline

Most groundwater pumped in the United States is used for: A. IndustryB. irrigationC. drinking waterD. swimming pools

Which of the following does NOT physically loosen rocks on the surface? A. water contracting as it freezesB. crystals of salt and other minerals that exert an outward force on fracturesC. roots that pry apart fractures as the root grows in sizeD. joints that form when rock pressures are releasedE. rodents and other burrowing organisms

Which sequence of events is required to form a limestone cave where you can walk around and observe cave formations, such as stalactites? A. limestone is below the water table, then lowering of the water table, then water dripping from the ceilingB. lowering of the water table, then water dripping from the ceiling, then limestone is below the water table C. water dripping from the ceiling, then lowering of the water table, then limestone is below the water tableD. none of the above