Facts about the interior of the earth are derived mainly from: a. composition of
ID: 105943 • Letter: F
Question
Facts about the interior of the earth are derived mainly from: a. composition of volcanic materials b. behavior of earthquake waves c. knowledge of the earth's density Who discovered the crust-mantle seismic discontinuity? a. Beno Gutenberg. 1936 b. Petrovich Divacs, 1914 c. Charles Richter, 1888 d. Andrija Mohorovicic. 1909 A seismic shadow zone: a. is the reason the earth has a crust. b. is evidence for the Moho. c. is another name for the "orographic effect". d. results from the interference of the earth's core with the passage of seismic waves. e. is present for P waves, but not for S waves. The basis for considering the outer part of the earth's core to be liquid is that: a. molten magmas come from the core b. P, S, and L waves can pass through the core c. S waves cannot pass through the core d. P and S waves cannot pass through the core New oceanic crust forms a. at oceanic trenches b. at mid-ocean ridges c. at subduction zones d. at collision zones The process whereby oceanic plates slide under other plates is called a. decretion b. translation C. subduction d. divergence The boundary between the crust and the mantle is known as the a. p-wave discontinuity b. seismic gap c. Moho d. olivine limit The soft, plastic layer on which the lithospheric plates move is called the a. liquid outer core b. asthenosphere c. geothermal gradient d. subduction zone The lithosphere a. is rigid. b. includes the crust and the uppermost part of the mantle. c. is broken up into variously-sized plates d. rides atop the asthenosphere.Explanation / Answer
8)c
The knowledge of earth's density gives much more information about the land area, metals,percentage of land and also metals and metrials present in the surface of the earth
9)d
He was a coratian meteorologist and seismologist.He is considered as the founders of modern seismology.He was known for crist mantic sesmic discontinuity
10)is present for p waves,but no for s waves
A shadow zone is an area where sesimographs can only detect earthquakes where primary wave passes
12)mid ocean ridges
It is the upper layer of oceanic portion of a tectonic plate.It also occurs at scattered hotspots.It solidifies and forms as the upper most layer of the mantel
13)subdction
It is the geological process that takes at convergent boundaries of tectonic plates where one plates slide under another due to gravity into the mantel
14)Moho
It is the boundary between crust and mantel and also it is the depth where sesmic waves change it's velocity and there also change in chemical composition
15)asthenosphereIt
It is the deforming region of upper mantel of the earth.It is present below the lithosphere at depths between 80 to 200km below the earth's surface
16)includes the crust and uppermost part of the mantel
It is the outer most part of the terraestrial type of planet.It is composed of crust and upper portion of mantel.The crust is defined on the basis of minerology and chemistry
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