UNIVERSE
PLANETARY INTERIORS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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lithospheric and asthenospheric
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silicon based and iron based
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continental and oceanic
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outer and inner
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Detailed explanation-1: -Earth’s Crust. “Crust” describes the outermost shell of a terrestrial planet . Earth’s crust is generally divided into older, thicker continental crust and younger, denser oceanic crust . The dynamic geology of Earth’s crust is informed by plate tectonics.
Detailed explanation-2: -Oceanic crust is made of basalt, dark in color, thin compared to continental crust (5 km thick vs 20-50 km), denser than continental crust, and geologically young. Continental crust is composed of granite, light in color, and thicker, less dense, and older than oceanic crust.
Detailed explanation-3: -Continental crust is thicker. The oceanic crust is thinner. Continents cover 21% of Earth’s surface. They cover 72% of Earth’s surface.
Detailed explanation-4: -The continental crust is made up of a variety of rocks from sedimentary rocks such as sandstone and limestone to metamorphic rocks such as marble and slate, and igneous rocks like granite.
Detailed explanation-5: -Oceanic crust is thin (6 km thick) and dense (about 3.3 g/cm), consisting of basalt, gabbro, and peridotite. They include oceanic sediments (e.g. radiolarites, turbidites) and oceanic crust (e.g. basalt, pillow lava).