Plate Tectonics Earth Structure: A virtual journey to the center of Earth by Anne E. Egger, Ph.D. Reading Quiz Teach with this The Moho is the boundary between the lithosphere and the asthenosphere. the inner core and the outer core. the crust and the mantle. the mantle and the core. Earthquakes are useful for studying Earth's interior because each earthquake produces an array of seismic waves. earthquakes are extremely destructive. they happen below the surface of the Earth. they release stress that has been stored. Both S-waves and P-waves can travel easily through liquids. true false Although we don't have any samples of the core, most scientists agree that its main constituent is basalt. granite. iron. peridotite. Continental crust is ________________ than oceanic crust. thicker and less dense thicker and more dense thinner and less dense thinner and more dense When seismic waves hit a boundary with a different material, they might reflect. refract. change velocity. all of the choices What does the S-wave shadow zone indicate about Earth's interior? The core is made of iron. The mantle is denser than the crust. The mantle is liquid. The outer core is liquid. Tectonic plates consist of the lithosphere, which is made up of the crust and the uppermost mantle. true false How do we know that Earth is not the same composition all the way through? Seismic waves do not arrive uniformly all over the earth. There are two types of seismic waves, S- and P-waves. Where the mantle is exposed, it looks very different. Seismic waves attenuate with distance. Score Quiz