Download layers of earth hw2

Name __________________________________
Period _________
Layers of the Earth HW
HW Due
Tues. 9/24
Using your Earth Science Reference Tables (pages 1 and 10) answer the following questions.
1. (ESRT p.1) What element comprises the greatest percent by volume of the earth’s crust?
2. (ESRT p.1) What is the percentage by mass of silicon in the Earth’s crust?
3. What is the distance from the surface to the center of the Earth? (to the nearest 100 km)
4. Page 15 of your Ref. Tables gives you the equatorial diameter of the Earth. Show how you can use this
to check your answer to number 3.
5. What is the pressure at the interface of the outer core and mantle? (UNITS!)
6. What is the pressure at the interface of the mantle and the asthenosphere? (UNITS!)
7. What is the pressure at the interface of the inner core and the outer core? (UNITS!)
8. Make a statement about the relationship between depth under the Earth and pressure. (Ex: As you go
deeper into the Earth…)
9. In the outer core, is the interior temperature higher or lower than the melting point of the rock?
10. In the inner core, is the interior temperature higher or lower than the melting point of the rock?
11. Using your answers to 9 & 10, state whether each part of the core is solid or liquid.
Inner Core:
Outer Core:
12. Based on your answer to question 11, name one weakness of our 5 Layer liquid model.
13. What is the density of the inner core? (Don’t forget units!)
14. What is the temperature at the stiffer mantle/outer core interface?
15. Match the following words:
Crust
Hydrosphere
Atmosphere
Lithosphere
Water
Troposphere