Researchers studying earthquakes have determined why seismic waves change speed as they pass through the Earth’s inner ------- in that region of the Earth, there is another layer now being referred to as the “innermost inner core” and distinguished by its specific texture and structure that the waves must adapt to. Which choice completes the text so that it conforms to the conventions of Standard English?core,eliminatecore whileeliminatecoreeliminatecore:

Which of the following statements regarding seismic waves due to an earthquake at the Earth's surface, and the inner core is true?Group of answer choicesthe inner core is thought to be liquidPrimary S waves travel through the inner coreP waves do not travel through the inner coreP waves travel through the inner core at a higher velocity than S wavesthe inner core blocks P-, and S-waves

Scientists have determined that Earth's interior has layers with different properties. One property is that the inner core is solid. Which of the following statements can be used as evidence to support this property? A. During an earthquake, both P waves and S waves travel away from the focus through the interior of Earth. B. Seismographs that are far from the epicenter of an earthquake detect P waves much sooner than S waves. C. After an earthquake, P waves are detected on the opposite side of Earth but S waves are not. D. P waves do not refract based on the density of the medium it is traveling in, but S waves do.

5.  Which is a layer of molten iron and nickel that surrounds the inner core of Earth?*1 pointOuter CoreInner CoreSeismic WavesMechanical Waves

17.  Earth’s inner core is...*1 pointa dense ball of solid metal.a layer of molten metal.a layer of hot rock.a layer of rock that forms Earth’s outer skin.18.  According to the theory of plate ____________________, Earth’s plates move very slowly in various directions.*1 pointAbrasionTectonicsLong shore DriftLithosphere19.  Scientists think that the ____________________, made of iron and nickel, moves to produce Earth’s magnetic field.*1 pointInner CoreOuter CoreAbrasionTectonics20.    Which layer of the earth is completely Liquid?*1 pointCrustOuter CoreMantleInner Core

While researching a topic, a student has taken thefollowing notes:• Earthquakes start at a point called a “focus” andspread out from there as seismic waves.• The two types of seismic waves that travel beneathEarth’s surface are primary waves (P waves) andsecondary waves (S waves).• P waves travel more quickly beneath Earth’ssurface than do S waves.• P waves compress and expand the ground, causingit to move backward and forward.• S waves cause the ground to move from sideto side.The student wants to emphasize a similarity betweenP waves and S waves. Which choice most effectivelyuses relevant information from the notes toaccomplish this goal?A) P waves and S waves both travel beneath Earth’ssurface, causing the ground to move.B) P waves travel away from an earthquake’sstarting point at a higher rate of speed than doS waves.C) Spreading out from the focus of an earthquake,P waves move the ground backward andforward.D) Although P waves and S waves start at the samepoint, they behave very differently.