CH 1-4 test prep Flashcards
“The present is the key to the past” is known as the Principle of ____________
Uniformitarianism
What hazard is Utah most at risk for?
earthquakes
“A natural process or event that is a potential threat to human life or property” is the definition for: catastrophe, disaster, or hazard?
a hazard
What is the age of the Earth?
4.6 billion years
During the past 50 years, natural disasters have been increasing with flooding and storms being the major cause of fatalities.
True or False?
True
The Hawaiian islands formation is attributed to their location near a____?
a) Divergent boundary
b) Hot Spot
c) Transform boundary
d) Convergent boundary
B) Hot Spot
What is the name of the man who first proposed that the continents are drifting?
Alfred Wegner
What kind of plate boundary is found at the Mid-Ocean Ridge? Transform Divergent Convergent Strike-Slip
B) Divergent
When did the landmass of Pangea begin to break apart?
a) 100 million years ago
b) 200 million years ago
c) 2 billion years ago
d) 100,000 years ago
200 million years ago
Explain how paleomagnetic reversals support the plate tectonics model. (Yikes, sorry, hard question!)
Hint: symmetry
What type of seismic wave will be detected by a seismograph first?
P wave
What type of scale measures the degree of earthquake shaking at a given locale based on the amount of damage?
Modified Mercalli Intensity Scale
Richter Magnitude Scale
Modified Mercalli Intensity Scale
What type of Earth material is most susceptible to liquefaction?
Water saturated sediments, such as sand
Can earthquakes be predicted?
No
What type of fault is responsible for producing earthquakes along the Intermountain Seismic Zone and is responsible for the Basin and Range topography?
Normal Fault
A tsunami consists of one gigantic wave.
True or False
False
What is the difference between a distant tsunami and a local tsunami?
Distant tsunami travels out to sea; local travels directly to land
What type of plate boundary will most often produce a tsunami?
Divergent
Transform
Convergent
Convergent
What does a run-up map show?
Shows area that is likely to be inundated with water if a tsunami were to occur
What/Where is an example of a megathrust fault?
Chile’s west coast; Cascadia zone; Sumatra
where subduction is occurring
What is the age of the Earth?
4.6 billion years
Give an example of a catastrophe
There are many examples of catastrophes (massive disasters); examples include Hurricane Katrina or the Haitian earthquake in 2010
What is responsible for the formation of the Cascade Mountains?
Convergence along the mid-ocean ridge
Convergence along a transform boundary
Convergence along a subduction zone
Convergence along a subduction zone
Which of the following is found deep within the Earth?
Fault scarp
Epicenter
Focus
Focus
Which of the following phenomenon were associated with the Japanese earthquake that occurred in 2011. Note there could be more than one…
Liquefaction
Tsunami
Meltdown of nuclear reactors
All of these occurred during the 2011 Japanese earthquake
