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Questions and Answers
Which layer of the Earth generates the Earth's magnetic field?
Which layer of the Earth generates the Earth's magnetic field?
- Liquid outer core (correct)
- Outer silicate solid crust
- Highly viscous asthenosphere
- Solid inner core
What is the scientific understanding of the internal structure of Earth based on?
What is the scientific understanding of the internal structure of Earth based on?
- Observations of topography and bathymetry
- Observations of rock in outcrop
- Samples brought to the surface from greater depths by volcanoes or volcanic activity
- All of the above (correct)
What is the role of the asthenosphere in the internal structure of Earth?
What is the role of the asthenosphere in the internal structure of Earth?
- It is the solid inner core
- It is the outermost layer of the Earth
- It generates the Earth's magnetic field
- It is a highly viscous layer below the crust and mantle (correct)
What are the measurements used to understand the internal structure of Earth?
What are the measurements used to understand the internal structure of Earth?
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What is the chondrite model?
What is the chondrite model?
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Study Notes
Earth's Internal Structure and Magnetic Field
- The outer core layer of the Earth generates the Earth's magnetic field.
Understanding the Internal Structure of Earth
- The scientific understanding of the internal structure of Earth is based on seismic data from earthquakes.
Role of the Asthenosphere
- The asthenosphere is the upper part of the Earth's mantle, and it plays a crucial role in plate tectonics, allowing for the movement of tectonic plates.
Measurements for Understanding the Internal Structure
- Seismic data, gravitational measurements, and magnetic measurements are used to understand the internal structure of Earth.
Chondrite Model
- The chondrite model is a hypothesis that suggests the Earth's composition is similar to that of chondrite meteorites, which are thought to be remnants of the early solar system.
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