Tsunamis
What causes a Tsunami?
Earthquakes under the sea
What is a tool used to measure temperature?
Thermometer
What is the "Shadow Zone"
A zone where seismic waves cannot pass
What are caused by tension forces?
Tension Faults
Do Tension Faults result in a vertical or horizontal change?
vertical
What increases gradually in a tsunami as the depth of the ocean decreases?
Height
What is the measure of the strength released from an earthquake?
Magnitude
What are Vibrations within the earth Caused?
Seismic Waves
Define Shear stress
the force applied parallel to a material's surface, causing one layer to slide or shear over another.
Where is the focus with respect to the epicenter?
Directly below
How is a tsunami different from a tidal wave?
Tsunamis are caused by underwater earthquake, tidal waves are caused by the pull of the moon.
What is the prinout of the recording of waves called?
Seismogram
Which wave can only travel through solids
S-Waves
What kind of fault results in a horizontal shift?
Strike-Slip
What occcurs after an earthquake, causing more damage?
Aftershocks
What does Tsunami mean, and what language is it in?
Japanese for Harbor Waves
What measures intensity of how bad things were during an earthquake?
Mercalli Scale
What is it called when sand or silt becomes Saturated, causing the surface to act fluid-Like?
Liquification
What type of stress causes a strike-slip fault?
Shear stress
What are the first waves to hit the surface?
P Waves
How soon could a Tsunami reach you after you feel the initial ground shake?
30 minutes
What scale is capable of accurately measuring a magnitude 8 earthquake?
Moment Magnitude Scale
Moho Discontinuity is the boundary between crust and mantle where seismic waves speed up or slow down depending on what?
Density of the layers
Which seismic waves are the most destructive?
L-Waves
What force causes reverse faults?
Compression force