100%(11)11 out of 11 people found this document helpful
This preview shows page 26 - 29 out of 34 pages.
4. What is Paleomagnetism?The affects of continental drift on the Earth’s magnetic fieldThe study of the magnetic fields of fossilsThe study of magnetic tools and navigation of early humansThe magnetic inclination and declination imprinted on a rock at the time of its formationThe affects of the Earth’s mantle upon the Earth’s magnetic field in the past 5.The angle of the Earth’s magnetic field down into the ground toward the North Magnetic pole is called the:
6.The variability in the depths of oceans and seas is called?7.Which of these is NOT relevant to understanding how the nearly symmetrical patterns of marine magnetic anomalies form at mid-ocean ridges?8.Oceanic lithosphere extends further down into the mantle than continental lithosphereTrueFalse 9.Earthquakes are a common marker for tectonic plate boundaries10.Black smokers are undersea springs of hot water rich in mineral precipitate 11.Lithosphere and crust are synonymous.12.The most abundant rock in both continental and oceanic lithosphere is peridotiteTrueFalse 13.The Moho separates the lithosphere from the asthenosphere
14.Because the majority of Earth’s crust is oceanic, the oldest crustal rocks will likely be igneous rocks of the sea floor. 15.A hot spot track like that of the Hawaiian chain of islands is formed by the periodic eruption of material from a mantle hot spot through a plate that is moving over what might be a mantle plume. 16.Calcite is a mineral that can constitute oyster shells, and, in such cases, is an example of which method of mineral formation? Fumerolic mineralizationSolidification of a meltBiomineralization – in this case, the calcite is formed biogenically by the living oyster. Most minerals form abiogenically (without involvement of biological systems.) Calcite can also be precipitated from a solution, this would be considered an abiogenic way of forming it. Precipitation from a solutionSolid-state diffusion 17.Silicatesare classified on the basis of how the tetrahedrons join and share oxygen atomsHave the silicon-oxygen tetrahedron as their structural unitAre a huge category of minerals and include the common minerals quartz and feldsparAre a major component of continent crustAll of the above