1. Layers of the Earth Review Do not depend on this as your only form of review…not all information is contained in the slide show!

2. The thinnest layer of the Earth is____________.

3. The crust is made of mostly _________________ rock.

4. The two types of crust are __________ and ________ crust.

5. Oceanic Crust is made mostly of the dark, fine rock __________.

6. Continental Crust is made mostly of the light, coarse rock __________.

7. Ocean crust is much __________than continental crust.

8. Ocean crust is much denser than continental crust, however it is also much ____________ than Oceanic crust.

9. Oceanic crust is made mostly of

10. The crust that is found on the continents and at the beginning of the oceans (the continental shelf) is ________________.

11. Continental crust is made of mostly _________________rock.

12. Continental crust is much ________than oceanic crust.

13. Continental crust is much thicker than oceanic crust, however it is ____________

14. All life on Earth exists on or within a few hundred meters of the __________.

15. How do scientists study the Earth?

16. The instrument used to record the two types of waves that penetrate the Earth’s interior and then return to the surface is a __________.

17. Two types of seismic waves are _____________ and _____________. S-waves

18. _____________do not move well through liquid.

19. The inner core of the Earth is made of _________ and ________.

20. The inner core is a solid due to the enormous __________ from the layers above it.

21. The temperature of the inner core ranges from about

22. A very thin layer called the __________________separates the mantle and the core.

23. The main layer above the outer core is the _________.

24. A very thin layer called the ______________ separates the mantle and the crust.

25. The central part of the mantle is considered to be the ___________.

26. The asthenosphere has the ability to _________ and has the property of __________.

27. Asthenes means ______in Greek!

28. Both ____________ and_________ increase as you go deeper into the mantle.

29. The lithosphere is made up of the ___________ and the _______.

30. Geologists have used two main types of evidence to learn about Earth’s interior: __________ and ____________________.

31. Studying rock samples is an example of ___________.

32. Studying seismic waves is an example of ______________.

33. Litho is Greek means _________or ________________.

34. ____________ is the study of the Earth’s composition, structure, processes and history.

35. Liquid rock outside the Earth is called _____________.

36. Rocks are classified as either ___________, ______________ or ___________________ rocks.

37. The ________ is made of soil, sand and rock.

38. The most abundant elements found in the Earth’s crust are ____________and _________.

39. The ________ sphere is where all the water is found on Earth.

40. The ________ is the envelope of gasses that surrounds the Earth.

41. Scientists think that movements in the liquid outer core create Earth’s ___________ that surrounds the planet.

42. What are the segments of the Earth’s crust that are moving called?

43. What is liquid rock that hardens inside the Earth called?