Podcast
Questions and Answers
What is one factor that contributes to the formation of magma?
What is one factor that contributes to the formation of magma?
- Decrease in temperature
- Increase in density
- Increase in pressure
- Addition of volatiles (correct)
What is the definition of half-life?
What is the definition of half-life?
- The time needed for a radioactive substance to reach its peak activity
- The time needed for a radioactive substance to fully disintegrate
- The time needed for a radioactive substance to become stable
- The time needed for a radioactive substance to decay by half (correct)
In magma formation, what is decompression related to?
In magma formation, what is decompression related to?
- Increase in pressure
- Increase in temperature
- Decrease in pressure (correct)
- Decrease in density
How is heat transferred during magma formation as described in the text?
How is heat transferred during magma formation as described in the text?
Where do subduction zones occur?
Where do subduction zones occur?
What is the main cause of the Earth's internal heat according to the passage?
What is the main cause of the Earth's internal heat according to the passage?
Which of the following is not one of the four long-lived radioactive isotopes mentioned in the passage that continuously produce heat?
Which of the following is not one of the four long-lived radioactive isotopes mentioned in the passage that continuously produce heat?
According to the core accretion model described in the passage, what was the initial source of the Earth's internal heat?
According to the core accretion model described in the passage, what was the initial source of the Earth's internal heat?
What is the primary mechanism by which gravitational contraction of the Earth converted to internal heat?
What is the primary mechanism by which gravitational contraction of the Earth converted to internal heat?
What is the main reason the Earth's interior is still hot today?
What is the main reason the Earth's interior is still hot today?
Flashcards
Magma Formation Factor
Magma Formation Factor
Adding volatiles (like water) lowers the melting point of rocks, contributing to magma formation.
Half-life
Half-life
The time it takes for a radioactive substance to decay by half.
Decompression & Magma
Decompression & Magma
A decrease in pressure, causing rocks to melt, is a key part of magma formation.
Heat Transfer (Magma)
Heat Transfer (Magma)
Signup and view all the flashcards
Subduction Zones Location
Subduction Zones Location
Signup and view all the flashcards
Earth's Internal Heat Source
Earth's Internal Heat Source
Signup and view all the flashcards
Radioactive Isotopes (Not included)
Radioactive Isotopes (Not included)
Signup and view all the flashcards
Early Earth's Heat (Model)
Early Earth's Heat (Model)
Signup and view all the flashcards
Gravitational Contraction to Heat
Gravitational Contraction to Heat
Signup and view all the flashcards
Earth's Ongoing Heat
Earth's Ongoing Heat
Signup and view all the flashcards
