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Layers of the Earth. Crust =Top Layer Crust – layer of rock that form the Earth’s outer skin the crust includes both dry land and ocean floor. is solid.

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Presentation on theme: "Layers of the Earth. Crust =Top Layer Crust – layer of rock that form the Earth’s outer skin the crust includes both dry land and ocean floor. is solid."— Presentation transcript:

1 Layers of the Earth

2 Crust =Top Layer Crust – layer of rock that form the Earth’s outer skin the crust includes both dry land and ocean floor. is solid Thin 5 to 25 miles thick 2 types of Crust a. Continental Crust made mostly of a rock called granite (an intrusive igneous rock formed by magma) b. Ocean Crust (floor) made mostly of a rock called basalt (an extrusive igneous rock formed by lava) Crust is home to all life on Earth Main Idea Supporting detail

3 1.In your note book make a Bubble map and describe the crust! 2. Write a definition of Crust in your note book under the Bubble map! ( use your own words.) 1.Draw a square box around the bubble map in the upper left hand corner tell where you got your information for your bubble map 4.In the lower right hand corner write the chapter and page number where you can find the information! crust Changing earth Chapt 1.1 Pages CRUST thin solid cool rocky Continental crust Ocean crust Home to all life Outer layer

4 Mantle = Middle layer Mantle – an interior layer of the Earth just below the crust is made up of hot rocks that are solid. The mantle is divided into layers based on physical characteristics. Thickest layer approximately 2,900 km thick – about 1800 miles Main IdeaSupporting detail

5 1.In your note book make a bubble map and define the mantle! 2. Write a definition of Mantle in your note book under the Bubble map! ( use your own words.) 3.Draw a square box around the bubble map in the upper left hand corner tell where you got your information for your Bubble map 4.In the lower right hand corner write the chapter and page number where you can find the information! Mantle

6 Outer Core –Liquid ( molten) –layer of iron and nickel –Temperature F –1800 mile below surface of Earth –1400 miles thick –magnetic Main idea Supporting detail Outer Core = Lower layer

7 1.In your note book make a bubble map and define the outer core! 2. Write a definition of outer core in your note book under the bubble map! ( use your own words.) 1.Draw a square box around the bubble map in the upper left hand corner tell where you got your information for your bubble map 4.In the lower right hand corner write the chapter and page number where you can find the information! Changing earth Chapt 1.1 Pages Outer core

8 Inner Core The inner core is center of Earth Iron & nickel Solid Hottest layer (9000F) 800 miles thick/diameter Main Idea Supporting details Inner Core = innermost layer

9 1.In your note book make a Bubble map and describe the crust! 2. Write a definition of Inner Core in your note book under the bubble map! ( use your own words.) 3.Draw a square box around the circle map in the upper left hand corner tell where you got your information for your Bubble map 4.In the lower right hand corner write the chapter and page number where you can find the information! Inner Core

10 How we know about layers Seismic Waves = earthquake waves Waves travel differently through different materials Main ideaSupporting details

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12 Lithosphere – all of the Earth’s crust and the very top of the mantle Asthenosphere – The rest of the upper mantle is not as solid it is a lot like asphalt and can bend and move html Areas with in the Crust and Mantle Main IdeaSupporting details

13 Lithosphere Lithos = stone (Greek) Spheara = ball/globe (latin)

14 Asthneosphere Asthenes = weak (greek) Spheara = ball/globe (latin)

15 – solid, cool, outer layer of the Earth – solid, hot, layer below the Earth’s crust – liquid hotter layer below The Earth’s mantle – solid, hottest, center of the Earth Review : The layers of the Earth C rust Mantle Outer Core Inner core

16 Tectonic Plates Tectonic Plates aka Lithospheric Plates or Plates for short Made of lithosphere –all of crust and upper part of mantle Tectonic / Lithospheric Plates Crust Very top of mantle ocean continental


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