Earthquake Trivia
What is the largest E.Q ever recorded by humans?
9.6 Magnitude E.Q in Chile, 1960
What is the energy called which builds up from stress around a fault line?
Elastic
In our earthquake labs using the compass to draw circles, how many circles are required to find an accurate location of where the earthquake started?
3 - triangulation
What is the linear or straight line seismic wave called
P wave
What is the scale used to measure the amount of energy released from a single E.Q?
Richter scale
How many earthquakes are there on average around our planet every SECOND?
2.5 earthquakes
What is the term for the movement of the crust/rock around the fault line causing an E.Q?
Rupture
What is the point on the earth's surface which shows the location of the E.Q?
Epicenter
Which seismic waves are concentrated in the crust only?
Surface waves
What is the scale used to measure the resulting damage caused by a single E.Q?
Modified Mercalli scale
Above 3.5
What is the front of the propagating energy wave called?
wave front
What is the term given the e.q origin directly below the surface?
Focus or hypocenter
Which wave is known as a 'transverse' wave?
What is the numbered scale of the Modified Mercalli scale?
0-12 (12 being the worst damage)
What country was the location for the "impossible" movie hotel which was hit by the 2004 Tsunami?
Thailand
How do seismic waves propagate in general through different materials?
Move between and vibrate, transmit energy from molecule to molecule
find the time difference between the P-S waves, take time to the p-s time travel graph and match up the time difference, move down to find corresponding distance.
Which wave propagates up and down?
Love wave (surface)
Why is a magnitude 6, severely more energy and damaging than a magnitude 4 on the Richter scale
The scale is LOGARITHMIC, therefore each number in succession from 0-10 is 10x more energy released, i.e. 3 to 4 = 10 times more energy in a 4 than a 3.
4 E.Q to 6 E.Q is 100x more energy
What was the amount of energy released in the 2004 Ocean Tsunami
23,000 atomic bombs
What famous earthquake inspired scientists to formulate a theory on how earthquakes are generated and function?
1906 E.Q in San Francisco
What seismic zone was located in both epicenter labs?
New Madrid seismic zone (second most active E.Q area in the contiguous United States
How are the P and S shadow zones created?
P waves are deflected through liquids compared to solids (decrease in velocity) therefore reaching a given area of the world at a delayed time.
S waves cannot propagate through liquid mediums, therefore are reflected when hitting the outer core, thus not allowing S waves to travel through and create an 103 degree shadow on the opposite side of the Earth to the epicenter.
What was the magnitude of the Alaskan E.Q of 1964, epicenter was in Anchorage?
9.1