2. Journey to the Center of Earth

3. Layers of the Earth Outer Crust Inner Crust Mantle Outer Core Inner Core Crust

4. Inner Core 750 mile radius Outer Core 1,430 miles Mantle 1,800 miles Crust (10-25 miles) Inside Our Earth

5. The inner core is made of solid nickel and iron. The outer core is made of hot liquid nickel and iron. The crust is made of soil, water and rock. The mantle is hot part melted and part solid iron and magnesium. Composition of the Earth’s Layers

6. Outer Crust This is the layer that we live on The thickness ranges from five miles under the oceans to 25 miles under the continents Consists of cooled rock It is the thinnest layer of the earth

7. The Mantle This layer is semi- liquid It consists of magnesium, iron, and silicon It is 3000 km wide It is more solid closer to the surface

8. The Outer Core This is consists of liquid due to the high temperatures It is 2100 km wide This layer consists of nickel and iron

9. The Inner Core This layer is solid. The reason it is solid is due to the high pressure exerted on it from the outside layers. It consists of the metals nickel and iron. Its temperature is 6,000 degree Celsius. Its width is 2,100 km.

10. Let’s Play

11. Rocks can move

13. Beneath the crust

14. Solid iron

15. Thinnest layer

17. Under the mantle

18. Plates ride on top

19. Melted iron

20. Center of Earth

21. Outermost layer

23. Solid rock

25. Earth’s ________ is divided into sections. crust

26. How many sections is Earth’s crust divided into?

27. These sections are known as …

28. The place where plates meet is called a …

29. Most volcanoes and earthquakes are located at the …

30. Let’s Play

31. Mountains

32. Plates move apart

33. Volcanoes

34. Changes the shape of the ocean floor

35. Trenches

36. Plates collide

37. Two plates slide past one another

38. One plate slides under another

39. When two plates converge ________ may work its way through the crust. magma

40. Magma may contain highly explosive ________. gases

41. A ____________ is formed when magma breaks through to the surface. volcano

42. New _______ is formed when the lava cools and hardens. land

43. An _______________ occurs when plates move and the crust slips or breaks. earthquake

44. The gradual uplifting of the crust during an earthquake causes ____________ to form. mountains