Powerwords
Primary waves- compress and expand like a slinky.
P-waves
What are the first waves to hit the surface?
P-waves (primary)
Which fault makes horizontal change?
Strike Slip
What are earthquake waves recorded by? (scientific tool)
Seismograph
What does tsunami mean in english?
Harbor Wave
Boundary between the crust and the mantle
Moho Discontinuity
Which wave causes the most damage?
L-waves
Earthquakes are caused by what?
Vibrations or seismic waves
Which scale measures the intensity of an earthquake?
Mercalli Scale
Tsnami's _____ increases as the depth decreases
Location where the energy of an earthquake is released
Focus
What is evidence that the earth's outer core is molten liquid?
Plates move along what?
Faults (plate boundaries)
Which scale is based on the moment released during an earthquake
Moment Magnitute sclae
True or false- tidal waves are the same as tsunamis
false
Seismograph
What is the "shadow zone"?
S-waves or seismic waves cannot pass.
Which fault is caused by compression?
Reverse faults
10 times
What type of object can tsunamis travel as fast as?
Jet plane
High waves of water caused by changes in the flow and surge of the ocean caused by the moon
Tidal Wave
Which type of wave alone does not cause damage?
P-waves (primary)
Strike slip
How many magnitute 6 earthquakes happen each year wordwide?
100
What are tsunami's caused by?
earthquakes or volcanic eruptions under the sea.