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CRUST Earth's rocky shell. Thick- ness ranges from two miles in some ocean areas to 75 miles under mountains. UPPER MANTLE About 400 miles thíck. The rigid, topmost 40 miles and the crust form shifting slabs of rock called tec- tonic plates. LOWER MANTLE Nearly 1,400 miles thick. Pressure, increasing with depth, makes rocks denser than those in the upper mantle. CORE-MANTLE BOUNDARY REGION Mantle rock meets core metal in this transition zone. Thickness ranges from near nothing to sev- eral hundred miles. Figure 3.5 A cross section through Earth showing the internal layers. OUTER CORE Some 1,400 miles thick. Mostly iron and nickel, this 8500°F liquid flows like water. INNER CORE About 1,500 miles in diameter. Pressure 3.6 million times that at the earth's surface creates a solid sphere, mostly iron. 1201Cename Leaming. All Rights Reserved. May not te copied, scamed or duplicated in whole or in part. Due to electronic righu, some third party content may be suppressed from the eBook andior eChapteris Edecrial revier has deened ihar su atenides net materially affect the overall lkarning experience. Cengage Learning reserves the right to remove additional conkent at any time if subsequent righes restrictions require it.

CRUST Earth's rocky shell. Thick- ness ranges from two miles in some ocean areas to 75 miles under mountains. UPPER MANTLE About 400 miles thíck. The rigid, topmost 40 miles and the crust form shifting slabs of rock called tec- tonic plates. LOWER MANTLE Nearly 1,400 miles thick. Pressure, increasing with depth, makes rocks denser than those in the upper mantle. CORE-MANTLE BOUNDARY REGION Mantle rock meets core metal in this transition zone. Thickness ranges from near nothing to sev- eral hundred miles. Figure 3.5 A cross section through Earth showing the internal layers. OUTER CORE Some 1,400 miles thick. Mostly iron and nickel, this 8500°F liquid flows like water. INNER CORE About 1,500 miles in diameter. Pressure 3.6 million times that at the earth's surface creates a solid sphere, mostly iron. 1201Cename Leaming. All Rights Reserved. May not te copied, scamed or duplicated in whole or in part. Due to electronic righu, some third party content may be suppressed from the eBook andior eChapteris Edecrial revier has deened ihar su atenides net materially affect the overall lkarning experience. Cengage Learning reserves the right to remove additional conkent at any time if subsequent righes restrictions require it.

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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Without looking ahead, can you think of a way scientists could have arrived at the conclusion that the inner Earth is layered?

CRUST Earth's rocky shell. Thick- ness ranges from two miles in some ocean areas to 75 miles under mountains. UPPER MANTLE About 400 miles thíck. The rigid, topmost 40 miles and the crust form shifting slabs of rock called tec- tonic plates. LOWER MANTLE Nearly 1,400 miles thick. Pressure, increasing with depth, makes rocks denser than those in the upper mantle. CORE-MANTLE BOUNDARY REGION Mantle rock meets core metal in this transition zone. Thickness ranges from near nothing to sev- eral hundred miles. Figure 3.5 A cross section through Earth showing the internal layers. OUTER CORE Some 1,400 miles thick. Mostly iron and nickel, this 8500°F liquid flows like water. INNER CORE About 1,500 miles in diameter. Pressure 3.6 million times that at the earth's surface creates a solid sphere, mostly iron. 1201Cename Leaming. All Rights Reserved. May not te copied, scamed or duplicated in whole or in part. Due to electronic righu, some third party content may be suppressed from the eBook andior eChapteris Edecrial revier has deened ihar su atenides net materially affect the overall lkarning experience. Cengage Learning reserves the right to remove additional conkent at any time if subsequent righes restrictions require it.
Transcribed Image Text:CRUST Earth's rocky shell. Thick- ness ranges from two miles in some ocean areas to 75 miles under mountains. UPPER MANTLE About 400 miles thíck. The rigid, topmost 40 miles and the crust form shifting slabs of rock called tec- tonic plates. LOWER MANTLE Nearly 1,400 miles thick. Pressure, increasing with depth, makes rocks denser than those in the upper mantle. CORE-MANTLE BOUNDARY REGION Mantle rock meets core metal in this transition zone. Thickness ranges from near nothing to sev- eral hundred miles. Figure 3.5 A cross section through Earth showing the internal layers. OUTER CORE Some 1,400 miles thick. Mostly iron and nickel, this 8500°F liquid flows like water. INNER CORE About 1,500 miles in diameter. Pressure 3.6 million times that at the earth's surface creates a solid sphere, mostly iron. 1201Cename Leaming. All Rights Reserved. May not te copied, scamed or duplicated in whole or in part. Due to electronic righu, some third party content may be suppressed from the eBook andior eChapteris Edecrial revier has deened ihar su atenides net materially affect the overall lkarning experience. Cengage Learning reserves the right to remove additional conkent at any time if subsequent righes restrictions require it.
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