Plate Tectonics

Nicole Li
Mind Map by Nicole Li, updated more than 1 year ago
Nicole Li
Created by Nicole Li over 6 years ago
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Description

6th science Mind Map on Plate Tectonics, created by Nicole Li on 09/22/2015.

Resource summary

Plate Tectonics
  1. Section 1: Earth's Interior

    Annotations:

    • The deeper you go the higher  the temperature gets.
    1. Exploring Inside Earth
      1. Evidence from rock samples

        Annotations:

        • Scientists drill holes into Earth to find out what is inside.
        1. Evidence from seismic waves

          Annotations:

          • Scientists send seismic waves into Earth.
        2. Journey to the center
          1. Temperature

            Annotations:

            • The deeper you go, the higher the temperature.
            1. Pressure

              Annotations:

              • The deeper, the stronger the pressure.
            2. The Mantle
              1. Asthenosphere

                Annotations:

                • The asthenosphere is the softest part of the mantle.
                1. Lithoshere

                  Annotations:

                  • The lithosphere is the upper part of the mantle and the lower part of the crust.
                  1. Lower Mantle

                    Annotations:

                    • The lower mantle is solid and extends down to the core.
                  2. The Crust

                    Annotations:

                    • The crust is a solid layer of rock the is 4 to 5 kilometers thick.
                    1. The Core
                      1. The Outer and Inner Core

                        Annotations:

                        • The outer core is liquid, but the inner core is solid.
                        1. The Core and Earth's magnetic Field

                          Annotations:

                          • Our planet is like a giant magnet bar, and the core is the magnet.
                      2. Section 2: Convection and Mantle
                        1. Convection currents in Earth
                          1. Caused By Mantle

                            Annotations:

                            • Currents are caused by the heat from the core and mantle.
                          2. Convection currents
                            1. A current that transfers heat

                              Annotations:

                              • A convection current is continuos as long as there is heat.
                            2. Types of Heat Transfer
                              1. Radiation

                                Annotations:

                                • Radiation is transfer of energy through space(air).
                                1. Convection

                                  Annotations:

                                  • Convection is heat transfer through fluids.
                                  1. Conduction

                                    Annotations:

                                    • Conduction is heat transfer through contact.
                                2. Section 3: Drifting Continents
                                  1. Continental Drift
                                    1. Evidence From Land Features

                                      Annotations:

                                      • The continents all fit together, just like a jigsaw puzzle.
                                      1. Evidence From Fossils

                                        Annotations:

                                        • The fossils of the same organisms were found in far apart continents, today.
                                        1. Evidence From Ancient Climate Zones

                                          Annotations:

                                          • Fossils of tropical plants found in Antartica and sediments from glaciers found in Africa conclude that climate was different back then, meaning that the continents either moved away from the equator or to the equator.
                                        2. Wegner's Hypothesis Rejected
                                          1. Wegner's hypothesis is rejected.

                                            Annotations:

                                            • Most geologists rejected Wegner's hypothesis because he couldn't identify the cause of continental drift.
                                        3. Section 4: Sea-floor Spreading
                                          1. Mid-Ocean Ridges

                                            Annotations:

                                            • Scientists use Sonar to map outh a mid-ocean ridge(an underwater mountain chain).
                                            1. What is Sea-Floor Spreading

                                              Annotations:

                                              • The sea-floor spreads apart along mid-ocean ridges, carrying continents with them.
                                              1. Evidence for sea-floor spreading
                                                1. Evidence from molten material

                                                  Annotations:

                                                  • Scientists discover molten material and use it for evidence.
                                                  1. Evidence from drilling samples

                                                    Annotations:

                                                    • Drilling samples from the ocean floor give evidence of sea-floor spreading.
                                                    1. Evidence from Magnetic Stripes

                                                      Annotations:

                                                      • Rock patterns give evidence of sea-floor spreading.
                                                    2. Subduction at Trenches
                                                      1. The Process of Subduction

                                                        Annotations:

                                                        • A part of the process of subduction is when the ocean floor sinks into the mantle.
                                                        1. Subduction and Earth's Oceans

                                                          Annotations:

                                                          • Sea-floor spreading and subduction are changing the size and shape of the oceans.
                                                      2. Section 5: The Theory of Plate Tectonics
                                                        1. How Plates Move

                                                          Annotations:

                                                          • The theory of plate tectonics  explain the activities of Earth's plates.
                                                          1. Plate Boundaries
                                                            1. Spreading Boundaries

                                                              Annotations:

                                                              • Spreading boundaries happen when two plates spread apart.
                                                              1. Colliding Boundaries

                                                                Annotations:

                                                                • Colliding boundaries occur when two plates come together.
                                                                1. Sliding Boundaries

                                                                  Annotations:

                                                                  • Sliding boundaries occur when two plate slide past each other, moving in opposite directions.
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