At what boundary within the earth do we believe the mantle plumes (hot spots) originate?
Answer: Mantle -Outer Core Boundary
Which of the following igneous rocks has the lowest silica content?
The majority of earthquakes recorded are of high magnitudes(7 or above using the Richter scale)
What is the name for the basaltic lava flow that has a ropy, folded surface?
Thrust Faults can be differentiated from reverse faults by the angle of fault dip.
What is soil liquefaction?
Answer: The process by which water-saturated, unconsolidated sediments are transformed into a substance that acts like a liquid, often caused by earthquakes.
Do Intraplate earthquakes occur often?
This rock takes up most of the Hawaiian Islands
Answer : Granite
This natural hazard costs the most in terms of damage that was dealt.
Smaller pieces of rock that are broken off by physical weathering are called:
The layer of accumulated sediment on the ocean floor is thinnest at the mid-ocean ridge.
What process creates sedimentary basins?
Does rifting in continental crust result in sea-floor spreading?
What is one of the main processes that drive plate tectonics?
Answer: Mantle Convection
The arrival of seismic body waves are recorded after the arrival of surface waves at a seismograph station.
The presence of water will decrease the melting temperature of the rock.
One of the pieces of evidence provided by Alfred Wegener in support of his hypothesis of continental drift was the existence of marine magnetic anomalies.
Extrusive rocks have larger crystals than intrusive rocks.
A trough-like fold is a syncline.
What are the 3 main types of sediments?
Answer: clastic, biochemical, chemical.
What is a gap in the rock record due to non-deposition or erosion?
Which of the following tectonic settings will be coolest at 30-km depth?
Answer: Stable continental lithosphere.
___________ is caused by earthquakes.
Metamorphic rocks result from the re-crystallization of existing rocks while they are still in a solid state.
How do you improve slope stability?
Answer: Decreasing the slope angle.
Is Hydrogen in the top 8 most abundant elements in Earth?
Does the temperature of magma influence its viscosity?
List 3 classes of rocks.
Answer: Metamorphic rocks, igneous rocks, sedimentary rocks.
What is a reverse fault?
Answer: A fault where the footwall is displaced downwards relative to the hanging wall.
How old is the oldest rock on Earth?
Answer: 4.4 Billion Years old.
Is the Theory of Evolution used in relative dating?
Is oxygen the most abundant element on Earth?
This rock has an aphanitic texture, containing amphibole, biotite, and sodium feldspar.
Is Andesite volcanic?
The magma that creates Andesite has a temperature of 800 degrees Celsius
Why did Charles Darwin think that the principle of Faunal Succession worked?
Answer: Because the organisms had evolved through many decades.
What is the viscosity of Andesite?
Answer: Somewhat Intermediate
Any substance where the atoms are arranged in a regular geometric pattern is what?
Answer: Crystalline Substance
What is the physical property of minerals?
The first geologist to suggest that Earth was very ancient was whom?
Answer: James Hutton.