24 October 2011
S.I. Session 22 Quiz
This quiz covers material from the lecture on Friday, October 21st.
Part a) Match the term to its definition:
TERMS:
a)Surface Waves b)Hazard c)P Waves
d)Ridges e)S Waves f)Sound
g)Paleoseismology h)Subduction Zones i)Tsunamis
DEFINITIONS:
1)__Travel as a series of contractions and expansions, pushing and pulling particles in the direction of their path of travel.
2)__Push material at right angles to their path of travel.
3)__These waves are confined to the earth’s surface an outer layers, there are two types, sideways and elliptical rolling.
4)__The speed of seismic waves in solid rock is about 6 kilometers per second, which is about 20 times the speed of this.
5) __These can be generated by megathrust ruptures, submarine landslides, or volcanic eruptions.
6)__This is a measure of ground shaking that can be expected during an earthquake.
7)__The study of long term earthquake recurrence times.
8)__Shallow earthquakes tend to begin here.
9)__Deeper earthquakes tend to begin here.
Part b) Explain the motion of particles in P, S, and the two different types of surface waves:
Part c) True or False:
Mark T (true) or F (false) in the blank provided:
1)__Primary and Secondary waves travel on the earth’s surface.
2)__A tsunami is usually only several centimeters high in the deep ocean but can become many meters high close to shore.
3)__Earthquakes have occurred in America’s Mississippi river valley.
4)__The calculation of the location of an earthquakes origin is done by the triangulation of three seismographic records, similar to the technique GPS satellites use to pinpoint locations.
5)__ The P wave is the first wave that strikes after an earthquake.
6)__Earthquakes can be predicted.
7)__Seismic waves radiate from an earthquake zone.
8)__P, S, and Seismic waves all travel at the same speeds and reach the seismographs simultaneously.
No comments:
Post a Comment