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Stress in the Crust Mountain Building Earthquakes Hazards and Safety ReviewCh 4 Plate Tectonics Anything Goes Ch 5 10 Point 20 Points 30 Points 40 Points 50 Points 10 Point 20 Points 30 Points 40 Points 50 Points 30 Points 40 Points 50 Points Measuring Earthquakes
1.Compression 2.Tension 3.Shear
What are the 3 stresses that deform the Earth’s surface?
The measure of the amount of force applied to a given area.
What is Stress?
Any change in the shape or volume of Earth’s crust
What is deformation?
This adds energy to the rock. Energy is stored in the rock.
What is stress?
Tension forces in the Earth’s crust cause this type of fault.
What is a Normal fault?
The Appalachian & the Himalayan mountains were formed this way.
What is folding?
The stress that causes folding.
What is compression?
A large area of flat land elevated high above sea level.
What is a plateau?
Fault Type
What is a Reverse fault?
A fold that bends upward in a mountain.
What is an anticline?
The point beneath Earth’s surface where the rock under stress breaks.
What is the focus of an earthquake?
The point on the surface directly above the point where the earthquake takes place.
What is the epicenter?
They are vibrations that travel through the earth carrying the energy released during a Earthquake
What are Seismic Waves?
It records the ground movement caused by Seismic Waves
What is a Seismograph?
Primary waves Secondary waves Surface waves
What are the types of seismic waves?
An earthquake that takes place after a larger earthquake
What is an aftershock?
When an earth- quake turns soft earth to liquid mud
What is liquefaction?
In 1964, liquefaction triggered this in the Alaskan earthquake
What are landslides?
This means “harbor wave” in Japanese.
What is tsunami?
Buildings with this can absorb the earthquakes energy when the building begins to shake.
What is Base Isolation?
Drop, Cover and Hold
What is the best way to protect yourseldf in an earthquake?
This meter has liquid in it like a carpenter’s level.
What is a tiltmeter?
This uses a wire stretched across a fault
What is a creepmeter?
Geologists use the location of faults and where past earthquakes have occurred
How are earthquake risk maps made?
Question 4e
Type of fault and stress
What is normal and tension?
The type of fault and stress
What is strike slip and shearing?
aaaa If you know the difference in arrival time of p and s waves, you can figure out…..
What is the distance to the epicenter?
Starting at the surface, the layers of the Earth, in order.
1.Crust 2.Mantle 3.Outer Core 4.Inner Core Back to Menu
Answer 3f
Question 3f
Answer 4f What is colder, older and more dense?
Most earth quakes occur at plate boundaries ….. …bebecause
What is large amounts of stress builds up in these areas?
The types of plate boundaries in the picture below. What is the missing boundary?
Back to Menu 1)Convergent: Oceanic/Oceanic crust Subduction zone 2)Divergent: Mid-Ocean Ridge 3)Transform Boundary (not shown)
the 3 types of boundaries symbolized by the following motions.
Convergent, Divergent, and Transform boundaries. Back to Menu
Make your wager
Final Answer
Final Question