2. 1. What is the outermost layer of the Earth called?
Core
Crust
Asthenosphere
mesosphere

3. 2. What is the liquid layer of the Earth called?
A. Lithosphere
B. Mesosphere
C. Inner core
D. outer core

4. 3. The mantle is denser than the crust because it contains more ____
A. Iron
B. Magnesium
C. oxygen
D. silicon

5. 4. The core is most composed of __
A. Aluminum
B. Silicon
C. Iron
D. Oxygen

6. 5. The layers of the Earth from the outside in are …….
A. Crust, lithosphere, mesosphere, asthenosphere,, outer core, inner core
B. Asthenosphere, crust, lithosphere, mesosphere, outer core, inner core
C. Crust, mesosphere, outer core, inner core, lithosphere, asthenosphere
D. Crust, lithosphere, asthenosphere, mesosphere, outer core, inner core

7. 6. The rigid layer made up of crust and upper mantle
A. lithosphere
B. Crust
C. mantle
D. mesosphere

8. 7. The layer made of solid rock that slowly flows.
A. Mantle
B. Mesosphere
C. Lithosphere
D. asthenosphere

9. 8. The lower part of the mantle. Also the largest part of the mantle.
A. Mantle
B. Mesosphere
C. Lithosphere
D. asthenosphere

10. 9. Which type of crust is thicker?
A. Continental
B. Oceanic

11. 10. Which type of crust is the densest?
A. Continental
B. Oceanic

12. 11. As depth increases inside the Earth density ________
A. decreases
B. increases

13. 12. If you are digging towards the center of the Earth the temperature will _______
A. decrease
B. increase