Concept #3 Quiz

choose the best possible answer come the following questions about an essential Concept 3 "Discovering Earth"s major internal boundaries."
1.

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Which that the following finest characterizes exactly how the diameter that Earth’s core and the nature that the external core were discovered?by evaluation of the P-wave and also S-wave zero zones
by making use of the ratio of steel meteorites come mantle-like meteorites to deduce the relative diameters
crystalline iron was discovered in lavas erupted from hot spots
by the fact that P-wave speed are higher in the outer core than in the reduced mantle
2.What is a ns or S tide “shadow zone” ~ above the opposite side of the earth from one earthquake?
the region in i beg your pardon seismic terminal seismographs carry out not receive P or S wave arrivals
the zone in which ns waves room absorbed, but S waves room enhanced, and also seismographs are in error
the region in which seismic terminal seismographs perform not obtain surface wave arrivals
the ar in which ns or S waves are enhanced, and also seismographs get a shadowing effect
3.Match the major Earth boundary with the suitable description: Using the pulldown boxes, match each items on the left come the matching item in ~ right.
A. The boundary between the crust and mantle
B. The boundary in between the inner and outer core
C. Uncovered using the 35-degree-wide P-wave shadow zone
Choice AChoice BChoice C
the Lehmann Discontinuity
Choice AChoice BChoice Cthe Core-Mantle boundary
Choice AChoice BChoice Cthe Moho
4.Which that the following best explains why over there is a P-wave “shadow zone” between 105 and 140 degrees?
P waves are reflected at the boundary in between the inner and outer cores.
P waves are reflected indigenous the inside core–outer core boundary.
P-wave velocities are reduced in the mantle 보다 in the crust.
P waves are refracted crossing the mantle–outer main point boundary.
5.Which of the complying with facts about seismic waves is supplied to analyze that the Earth’s outer core is "liquid"?
S-waves execute not travel through liquids
P-wave velocities are reduced in the mantle 보다 the core
P-waves perform not travel v solids
P-waves space reflected from the boundary in between the within core and outer core
6.Match the letter top top the diagram through the appropriate description:For each item below, use the pull-down food selection to pick the letter that labels the correct part of the image.
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Choice AChoice BChoice CChoice D
zone of no directly-received ns waves
Choice AChoice BChoice CChoice DP-wave zero zone
Choice AChoice BChoice CChoice Dzone of directly-received P and S waves
Choice AChoice BChoice CChoice DS-wave zero zone
7.Which is used as proof that the inner main point is solid?
S waves space slower in the inside core 보다 in the outer core.
S waves perform not pass straight through the core.
P tide are faster in the inside core than in the external core.
S waves are concentrated at the center of the P-wave shadow zone.
8.If one earthquake epicenter is located at the Earth’s north pole, i beg your pardon of the adhering to is not true? choose all the apply.
The seismograms in ~ the south pole would not record any type of S waves.
The seismograms at the south pole would receive S waves.
The seismograms in ~ the south pole would obtain P waves.
The seismograms at new York City would get both P and S waves.
The seismograms at the south pole would not record any P waves.
9.

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Match the depicted seismogram v the most most likely place on planet that it to be recorded.For each item below, use the pull-down menu to pick the letter the labels the correct part of the image.
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