Podcast
Questions and Answers
What are Endogenic Processes?
What are Endogenic Processes?
Geological processes that occur beneath the surface of the Earth.
Which of the following is NOT an Endogenic Process?
Which of the following is NOT an Endogenic Process?
Folding and faulting are caused by _____ forces.
Folding and faulting are caused by _____ forces.
compressional
What results from the process of faulting?
What results from the process of faulting?
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What is Primordial Heat?
What is Primordial Heat?
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What is Magmatism?
What is Magmatism?
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Radioactive heat comes from long-term radioactive decay.
Radioactive heat comes from long-term radioactive decay.
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Where does magma primarily form?
Where does magma primarily form?
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Study Notes
Endogenic Processes
- Geological processes that happen beneath the Earth's surface
- Driven by energy originating from the Earth's interior
Folding & Faulting
- When two forces push from opposing sides, rock layers bend into folds.
- This is due to compressional forces known as folding.
- Large-scale folds are found near destructive plate boundaries.
- Faulting is the fracturing and displacement of rock strata along a fault plane, caused by tension or compression.
- A fault is a break in rock where vertical or horizontal movement has occurred.
- The line of fault appearing on the land surface is called a fault line.
Interior Heat
- Earth's interior heat comes from two main sources:
-
Primordial heat
- Generated during the Earth's formation
- Sources:
- Accretion energy: Heat from collisions of planetary objects
- Adiabatic compression: Heat generated as materials are compressed
- Core formation energy: Heat from the Earth's core formation
-
Radioactive heat
- Generated by long-term radioactive decay
- Sources: Potassium (K-40), Thorium (Th-232), Uranium (U-235, U-238)
-
Primordial heat
Heat Distribution
- Earth's internal heat is redistributed by convection and conduction.
- Convection is the transfer of heat by the movement of fluids (like air or liquid)
- Hotter, less dense fluids rise, while cooler, denser fluids sink, creating a circular flow.
Magmatism
- The process of magma generation and its development into igneous rocks.
- Magma forms in:
- Mid-oceanic ridges
- Mantle plumes
- Subduction zones
Mid-Oceanic Ridges
- Rising magma in mantle convection cells brings heat to the surface, transferring heat to the overlying rocks.
- The spreading of tectonic plates causes decompression, leading to magma generation.
Mantle Plumes
- The transfer of heat and compression from mantle plumes can also result in magma generation.
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Description
Explore the dynamic endogenic processes that shape the Earth's interior, including folding and faulting. This quiz covers the mechanisms behind these geological phenomena and the sources of Earth's interior heat. Test your understanding of how these processes affect the planet's structure.
