1.  The chemical / physical properties of the earth’s layers are largely determined by the
     balance between temperature and pressure. _____________________

2.  The mantle is situated between the asthenosphere and the __________________.

3.  The speed at which seismic waves travel is determined partly by the density of rock.
      True / False

4.  Based on seismic evidence the outer core / inner core is believed to be solid.

5.  High temperature / pressure within the earth keeps rock from melting.

6.  _______________________ is the bending or curving of seismic waves.

7.  The Shadow zone / Moho is caused by the effect of the core on P and S waves.

8.  The rocks that make up oceanic / continental crust are mostly basalt and gabbro.

9.  ______________________ is the circular flow of matter in the asthenosphere.

10. The _____________________ consists of the crust and the upper mantle.

11. The continental / oceanic crust of the earth is composed of the least dense rock
      material.

12. As depth below the earth’s surface increases, __________________ and
       ______________________ increase.

13. The Moho marks the boundary between the _____________ and the _____________.

14. A shadow zone that occurs during an earthquake is a region on earth’s surface where
      no __________________ waves are detected.

15. S waves can / cannot travel through liquids.

16. Which region of the earth’s interior shows plasticity? the ______________________

17. The velocity of P waves increases / decreases when they reach the Moho.

18. The layer of the earth that contains most of the earth’s mass is the _______________.

19. The ________________________ (a physical layer) is made up of the crust and the
      upper mantle.

20. An element present in crustal silicates that makes them less dense is aluminum /iron /
      magnesium / silicon. (choose one)

21.Matter moves through parts of the asthenosphere in a circular flow called
      _____________________.

22. The lower portion of the mantle is called the ____________________ (physical layer)

23. The energy released by an earthquake is carried through the earth in the form of
      ____________________ waves.

24. The innermost region of the earth (the inner core) is thought to consist of nickel and
      __________________.

25. The layer of the earth that is made up dense silicate rock is the _________________.
 

CHAPTER 3 REVIEW (ANSWER SHEET)

1.  The chemical / physical properties of the earth’s layers are largely determined by the
     balance between temperature and pressure. ___physical ____

2.   The mantle is situated between the asthenosphere and the _outer core _____.

3.  The speed at which seismic waves travel is determined partly by the density of rock.
      True

4.  Based on seismic evidence the outer core / inner core is believed to be solid. inner core

5.  High temperature / pressure within the earth keeps rock from melting. pressure

6.  ____Refraction __ is the bending or curving of seismic waves.

7.  The is caused Shadow zone / Moho by the effect of the core on P and S waves.

8.  The rocks that make up oceanic / continental crust are mostly basalt and gabbro.

9.  __Convection_____ is the circular flow of matter in the asthenosphere.

10. The _____lithosphere _____ consists of the crust and the upper mantle.

11. The continental / oceanic crust of the earth is composed of the least dense rock
      material.

12. As depth below the earth’s surface increases, __temperature _ and
      ___pressure ___ increase.

13. The Moho marks the boundary between the _crust__ and the __upper mantle___.

14. A shadow zone that occurs during an earthquake is a region on earth’s surface where
      no ___seismic waves__ waves are detected.

15. S waves can / cannot travel through liquids.

16. Which region of the earth’s interior shows plasticity? the asthenosphere___

17. The velocity of P waves increases / decreases when they reach the Moho.

18. The layer of the earth that contains most of the earth’s mass is the _mantle_.

19. The ___lithosphere___ (a physical layer) is made up of the crust and the
      upper mantle.

20. An element present in crustal silicates that makes them less dense is aluminum /iron /
      magnesium / silicon. (choose one) Aluminum

21. Matter moves through parts of the asthenosphere in a circular flow called
     _convection_.

22. The lower portion of the mantle is called the __mesosphere__ (physical layer)

23. The energy released by an earthquake is carried through the earth in the form of
       _____seismic_____ waves.

24. The innermost region of the earth (the inner core) is thought to consist of nickel and
       ____iron___.

25. The layer of the earth that is made up dense silicate rock is the _____mantle____.