GLG 112 Exam 1 NAU Questions And Answers Rated A+ New Update Assured Satisfaction
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Course
GLG 112 NAU
Institution
GLG 112 NAU
Rheological Layers - ️️Lithosphere
Asthenosphere
Lower Mantle
Outer Core
Inner Core
Continental Crust - ️️Density- 2.8 less dense
Thickness- 35-40 km thicker
Composition- Granite
What Controls the rheology of a layer? - ️️Temperature, composition and pressure
What controls land...
Continental Crust - ✔️✔️Density- 2.8 less dense
Thickness- 35-40 km thicker
Composition- Granite
What Controls the rheology of a layer? - ✔️✔️Temperature, composition and pressure
What controls land elevation? - ✔️✔️Thickness and Density of lithosphere
Difference between a Compositional and Rheological Layer? - ✔️✔️Compositional is
the 3 layers, Rheological is the 5 layers
Compositional Layers - ✔️✔️Crust
Mantle
Core
Crust - ✔️✔️Earth's outermost layer. (Comp)
Mantle - ✔️✔️Earth's thickest layer made of hot rock and is less dense than the core,
less hot, and has less pressure on it. It also has plasticity (Comp)
Core - ✔️✔️Center of Earth (Comp)
Lithosphere - ✔️✔️A rigid layer made up of the uppermost part of the mantle and the
crust.
Asthenosphere - ✔️✔️The soft layer of the mantle on which the lithosphere floats.
Lower Mantle - ✔️✔️The lowest portion of mantle, a zone of rigid rock
Outer Core - ✔️✔️A layer of molten iron and nickel that surrounds the inner core of
Earth
Inner Core - ✔️✔️the molten core of the Earth.
, Tectonic Activity - ✔️✔️Activity resulting from tectonic plate movement, occurs where
plate boundries are
Do earthquakes and volcanoes always occur together? - ✔️✔️No
Continent fit - ✔️✔️Continents fit together like a puzzle
Fossil Species - ✔️✔️fossils found across the world can be found in other areas,
showing that they where once all connected
Rock Types and Land Forms - ✔️✔️Rock Types and Landforms match across
continents, which means they where one a single continent
Glacial Striations - ✔️✔️Scratches on rocks that match across the world
Magnetic Anomolies - ✔️✔️Polarity of magnetic seafloor
Hot Spots - ✔️✔️Place where magma has melted rock above it, forms
Global Tectonic Activity - ✔️✔️
What is convection in Asthenosphere? - ✔️✔️Just like heating water, hot magma rises,
cools, then sinks to the bottom. Repeated.
Convection Asthenosphere - ✔️✔️
Ridge Push - ✔️✔️the process in which new material at a ridge or rift pushes older
material aside, moving the tectonic plates away from the ridge
Slab Pull - ✔️✔️the pulling of a tectonic plate as its edge subducts deep into the mantle
Active Margin - ✔️✔️Typically has volcanoes, oceanic trenches and geological activity
Passive Margin - ✔️✔️Chill margin,
3 types of active margins - ✔️✔️Divergent, convergent, and transform
Divergent Plate Boundry - ✔️✔️Boundary between tectonic plates in which the two
plates move away from each other, and new crust is created between them
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