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Questions and Answers
Which theory explains the movement of tectonic plates due to the flow of heat in the Earth's mantle?
Which theory explains the movement of tectonic plates due to the flow of heat in the Earth's mantle?
What technique is used to create a three-dimensional image of seismic wave anomalies?
What technique is used to create a three-dimensional image of seismic wave anomalies?
What drives the motion of tectonic plates according to the Slab Pull Theory?
What drives the motion of tectonic plates according to the Slab Pull Theory?
What is the result of conversion currents in the Earth's mantle?
What is the result of conversion currents in the Earth's mantle?
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Which instrument measures the round-trip distance between the ground and a satellite?
Which instrument measures the round-trip distance between the ground and a satellite?
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In which layer of the Earth do convection currents primarily occur?
In which layer of the Earth do convection currents primarily occur?
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Who proposed the Mantle Convection Theory in 1929?
Who proposed the Mantle Convection Theory in 1929?
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What primarily causes convection currents to form?
What primarily causes convection currents to form?
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Study Notes
Plate Tectonics
- The theory of plate tectonics explains various events like earthquakes, volcanic activity, and mountain formation through the movement and interaction of Earth's lithospheric plates.
Plate Movement Measurement
- Satellite Laser Ranging (SLR) measures distances between Earth-based instruments and satellites in low orbit.
- Global Positioning System (GPS) provides accurate positioning, navigation, and timing by tracking satellites.
- Seismic tomography uses seismic wave data to create a 3D image of variations in seismic wave velocity, revealing internal Earth structures.
Mantle Convection Theory
- Proposed by Arthur Holmes in 1929.
- Convection Currents: The flow of heat within a fluid caused by temperature differences, density changes, and gravity.
- Earth's Mantle: Heat from the core and mantle itself drives convection currents within the mantle.
Slab Pull Theory
- Occurs at convergent plate boundaries where denser oceanic plates subduct beneath less dense continental plates.
- The sinking dense plate pulls the rest of the plate along, creating a "slab pull" force.
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Description
This quiz covers the fundamental concepts of plate tectonics, including plate movement measurement techniques such as SLR and GPS. It also delves into mantle convection theory and slab pull theory, explaining how these processes contribute to geological phenomena like earthquakes and volcanic activity. Test your understanding of how Earth's lithospheric plates interact and shape our planet.
