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Questions and Answers
What is the primary mover of the Earth’s outer shell, the lithosphere?
What is the primary mover of the Earth’s outer shell, the lithosphere?
- Continental drift
- Seafloor spreading
- Volcanic activity
- Plate tectonics (correct)
What provides indirect evidence about the composition and structure of the Earth’s interior?
What provides indirect evidence about the composition and structure of the Earth’s interior?
- Tidal waves
- Earthquake body waves (correct)
- Meteor showers
- Volcanic eruptions
What are the three manifestations of plate movement examined in the text?
What are the three manifestations of plate movement examined in the text?
- Tectonic plate collisions, seafloor spreading, and rift valleys
- Tsunamis, volcanic eruptions, and landslides
- Magma chambers, geysers, and hot springs
- Earthquakes, crustal deformation, and mountain building (correct)
What type of measurements did spacecraft provide about the Earth’s interior?
What type of measurements did spacecraft provide about the Earth’s interior?
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What is believed to be similar to the composition of the Earth, providing indirect evidence about its interior?
What is believed to be similar to the composition of the Earth, providing indirect evidence about its interior?
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Study Notes
Plate Tectonics
- Convection currents in the Earth's mantle are the primary mover of the Earth's outer shell, the lithosphere.
Indirect Evidence of Earth's Interior
- Seismic data provides indirect evidence about the composition and structure of the Earth's interior.
Manifestations of Plate Movement
- Divergent motion: where new crust is created
- Convergent motion: where crust is destroyed
- Transform motion: where crust is neither created nor destroyed, but slides past each other
Spacecraft Measurements
- Spacecraft provided gravity measurements about the Earth's interior.
Similar Composition to Earth
- Meteorites are believed to be similar in composition to the Earth, providing indirect evidence about its interior.
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