Chapter 5
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Chapter 5. Chapter 5. Section 1 Inside the Earth. Earth is made of layers created by the density that makes it up. Crust is thinist and least dense layer Mantle between crust and core. Largest layer and contains most weight Core is center and made of iron and nickel . Chapter 5.

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Chapter 5

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Chapter 5


Chapter 5

Section 1 Inside the Earth


  • Earth is made of layers created by the density that makes it up.

    • Crust is thinist and least dense layer

    • Mantle between crust and core. Largest layer and contains most weight

    • Core is center and made of iron and nickel


Chapter 5

Section 1 Inside the Earth


  • Using physical properties, the Earth is divided into 5 layers

    • The crust is the rigged outer part called the lithosphere


  • The hard outer lithosphere is divided into techtonic plates

    • Tectonic plates float on the asthenosphere

    • Plates “bump” into each other


  • Seismologist use seismic waves to understand the Earth’s interior

    • Different waves can travel at different speeds

    • Different waves can travel through different material


Section 2

  • The same fossils can be found on different plates that are seperated by thousnads of miles of ocean

    • The plates are pushed by a process known as sea floor spreading

    • Magnetic reversal is evidence of sea floor spreading

      • Rocks next to mid-ocean ridge moving away reverse magnetic direction


Section 3

  • Plate techtonics is the theory that tectonic plates move

    • Boundary is where plates touch

      • Convergent boundries collide making mountains

      • Divergent boundaries pulls crust apart making trench

      • Transform boundries slide past each other only making earthquakes


  • Plates move because of convection currents inside the mantle

    • Warm moves up

    • Spreads out

    • Sinks


Section 4

  • Rocks change shape

    • Called deformation

    • Stress changes shape of rock


  • Two types of stress

    • Compression is squeezing together

    • Tension is pulling apart


  • Folding is bending of rock

    • Anticline-up like the A

    • Syncline-down


  • Faulting is when the rock breaks and moves

  • Mountains form by compression and tension


Section 5

  • Seismology is the study of earthquakes

  • Earthquakes are formed where rocks break and move past each other

    • Boundaries is where most movement occurs

    • Broken rock formed by stress can be found anywhere


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