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Transcript
NAME: ___________________________________
CLASS PER.: _________________
LAB # 14 STRUCTURE OF THE EARTH
Part A Use page 10 of the ESRT (earth science reference tables) to match the numbered regions of the
interior of the earth to the description:
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Composed of solid iron and nickel
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Composed of the least dense rock material
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Partly molten portion of the mantle
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appr. 800-3,000 km depth, 3.4-5.6 g/cm3
density
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Densest part of the crust (basalt)
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Composed of molten iron and nickel
Part B Use the density column of P. 10 of the ESRT to fill in the blank boxes on the diagram:
Questions (Use the information above, the review book and page 10 of the ESRT):
1. What happens to the density of the rock material as depth below the surface increases?
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2. What happens to the pressure within the earth as depth below the surface increases?
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3. What happens to the temperature within the earth as depth below the surface increases?
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4. Circle the term that applies to the layer described:
a. What is the physical state of the lithosphere?
(solid/liquid/partially molten)
b. What is the physical state of the asthenosphere (plastic mantle)?
(solid/liquid/partially molten)
c. What is the physical state of the outer core?
(solid/liquid/partially molten)
d. What is the physical state of the inner core?
(solid/liquid/partially molten)
5. What information from the diagram on p.10 of the ESRT shows that the outer core of the earth is liquid?
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6. At what depth below the earth’s surface does the outer core begin? _______________
7. Approximately how thick is the outer core? _______________
8. What is the temperature of the interior of the earth at a depth of 1,000 km? ______________
9. At what depth is the interior temperature of the earth thought to be 2,500°C? _______________
10. Which layer of the interior of the earth is the densest? _____________________
11. Based on what information do scientists make inferences about the interior of the earth? (Explain)
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