____11. All of the following are commonly found in the Earth’s crust except ________.

A. Calcium B. silicon C. oxygen D. iron

____12. Complete this sentence: As you go deeper inside the Earth ____________________.

A.It gets hotter, materials get denser and pressure increases

B. It gets cooler, drier and easier to travel

C. The temperature increases but pressure decreases

D.The temperature stays the same but the pressure increases

_____13. Which of these is an element commonly found in solid form within Earth’s crust?

A. Nitrogen B. copper C. bronze D. steel

____14. What are the two main types of crust?

A. continental and oceanic C. lithosphere and asthenosphere

B. solid and liquid D. thick and thin

____15. Which of the following statements is NOT true about continental crust?

A. It forms the continents.

B. It can be found beneath the ocean.

C. It is thicker and less dense than oceanic crust.

D. It is up to 100 km thick.

____16. Which layer is made up of mostly oxygen and silicon?

A. Core B. mantle C. lithosphere D. asthenosphere

_____17. What is the correct order of the layers of the Earth?

A. Lithosphere, upper and lower mantle, asthenosphere, outer and inner core

B. outer and inner core, upper and lower mantle, lithosphere, asthenosphere

C. Lithosphere, asthenosphere, upper and lower mantle, outer and inner core

D. upper and lower mantle, Lithosphere, asthenosphere, outer and inner core

_____18. The lithosphere is broken into pieces called _______.

A. Plates B. strata C. trenches D. atolls

_____19. The crust and upper mantle of the Earth are together known as the ___________.

A. Hydrosphere B. lithosphere C. biosphere D. asthenosphere

_____20. Which layer of the earth is directly below the crust?

A. Inner core B. mesosphere C. outer core D. mantle​