WHICH ONE OF THE FOLLOWING BEST CHARACTERIZES THE ASTHENOSPHERE?

Concept #3 Quiz

pick the best feasible answer to the complying with questions about key Concept 3 "Discovering Earth"s significant internal boundaries."

1. You are watching: Which one of the following best characterizes the asthenosphere?	Which of the following finest characterizes exactly how the diameter the Earth’s core and also the nature of the external core were discovered?	by evaluation of the P-wave and S-wave zero zones
	by utilizing the ratio of stole meteorites to mantle-like meteorites to deduce the loved one diameters
	crystalline steel was discovered in lavas erupted from hot spots
	by the truth that P-wave speeds are greater in the outer core 보다 in the reduced mantle

2.What is a p or S tide “shadow zone” on the opposite side of the planet from one earthquake?

the region in i beg your pardon seismic station seismographs execute not obtain P or S tide arrivals
	the region in which p waves are absorbed, yet S waves are enhanced, and seismographs room in error
	the zone in i beg your pardon seismic station seismographs execute not obtain surface tide arrivals
	the zone in which ns or S waves room enhanced, and also seismographs obtain a shadowing effect

3.Match the significant Earth boundary with the proper description: Using the pulldown boxes, match each item on the left to the corresponding item in ~ right.

	A. The boundary in between the crust and mantle
B. The boundary in between the inner and outer core
C. Found using the 35-degree-wide P-wave zero zone

Choice AChoice BChoice C

the Lehmann Discontinuity
Choice AChoice BChoice C	the Core-Mantle boundary
Choice AChoice BChoice C	the Moho

4.Which of the following finest explains why over there is a P-wave “shadow zone” in between 105 and also 140 degrees?

P waves space reflected in ~ the boundary between the inner and also outer cores.
	P waves space reflected native the inside core–outer main point boundary.
	P-wave velocities are lower in the mantle 보다 in the crust.
	P waves space refracted cross the mantle–outer main point boundary.

5.Which of the following facts about seismic waves is provided to analyze that the Earth’s external core is "liquid"?

S-waves carry out not travel v liquids
	P-wave velocities are lower in the mantle 보다 the core
	P-waves perform not travel through solids
	P-waves space reflected native the boundary between the inner core and outer core

6.Match the letter ~ above the diagram through the ideal description:For each item below, use the pull-down food selection to select the letter the labels the correct component of the image.

Choice AChoice BChoice CChoice D

zone that no directly-received ns waves
Choice AChoice BChoice CChoice D	P-wave shadow zone
Choice AChoice BChoice CChoice D	zone of directly-received P and also S waves
Choice AChoice BChoice CChoice D	S-wave shadow zone

7.Which is used as proof that the inner core is solid?

S waves space slower in the inside core than in the outer core.
	S waves perform not pass directly through the core.
	P waves are much faster in the inside core 보다 in the outer core.
	S waves are concentrated at the center of the P-wave shadow zone.

8.If an earthquake epicenter is located at the Earth’s phibìc pole, i m sorry of the complying with is no true? choose all the apply.

The seismograms in ~ the south pole would certainly not record any type of S waves.
	The seismograms in ~ the south pole would get S waves.
	The seismograms at the southern pole would get P waves.
	The seismograms at new York City would receive both P and also S waves.
	The seismograms in ~ the south pole would certainly not record any kind of P waves.

9.

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Match the portrayed seismogram through the most likely place on earth that it to be recorded.For every item below, use the pull-down menu to pick the letter the labels the correct component of the image.