Layers of the Earth Review Do not depend on this as your only form of review…not all information is contained in the sli

1. Layers of the Earth ReviewDo 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____________. The Crust

3. The crust is made of _________________ . Rock, Sand and Soil

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

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

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

7. Ocean crust is much __________than continental crust. Denser

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

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

10. Continental crust is made of mostly _________________rock. Granite

11. Continental crust is much ________than oceanic crust. thicker

12. Continental crust is much thicker than oceanic crust, however it is ____________ less dense

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

14. How do scientists study the Earth? They use indirect observation

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

16. Two types of seismic waves are _____________ and _____________. S-waves S-waves P-waves

17. _____________do not move well through liquid. P- waves

18. The inner core of the Earth is made of _________ and ________. iron nickel

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

20. The temperature of the inner core ranges from about 7000 degrees fahreinheit to 9000 degrees fahreinheit

21. A very thin layer called the __________________separates the mantle and the core. Gutenberg Discontinuity

22. The main layer above the outer core is the _________. mantle

23. A very thin layer called the ______________ separates the mantle and the crust. The Moho

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

25. The asthenosphere has the ability to _________ and has the property of __________. flow Plasticity

26. Asthenes means ______in Greek! weak

27. ____________,__________ and_________ increase as you go deeper into the mantle. pressure, temperature and density

28. The lithosphere is made up of the ___________ and the _______. upper mantle crust

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

30. Studying rock samples is an example of ___________. direct evidence

31. Studying seismic waves is an example of ______________. indirect evidence

32. Litho is Greek means _________or ________________. rock stone

33. Liquid rock outside the Earth is called _____________. lava

34. Rocks are classified as either ___________, ______________ or ___________________ rocks. sedimentary igneous metamorphic

35. The ________ is made of soil, sand and rock. lithosphere

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

37. The ________ is the envelope of gasses that surrounds the Earth. atmosphere

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

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

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