10 Questions
What is one factor that contributes to the formation of magma?
Addition of volatiles
What is the definition of half-life?
The time needed for a radioactive substance to decay by half
In magma formation, what is decompression related to?
Decrease in pressure
How is heat transferred during magma formation as described in the text?
Through convection
Where do subduction zones occur?
At convergent plate boundaries
What is the main cause of the Earth's internal heat according to the passage?
Gravitational contraction and radioactive decay of elements
Which of the following is not one of the four long-lived radioactive isotopes mentioned in the passage that continuously produce heat?
Radium-226
According to the core accretion model described in the passage, what was the initial source of the Earth's internal heat?
Collision and sticking together of small pieces of matter left over from the formation of the sun
What is the primary mechanism by which gravitational contraction of the Earth converted to internal heat?
The conversion of gravitational potential energy to thermal energy
What is the main reason the Earth's interior is still hot today?
Radioactive elements are still undergoing decay and releasing heat
Explore the various processes that occur within the Earth, such as heat generation, magma formation, metamorphism, and volcanism. Learn about gravitational contraction, heat from gravity, and core accretion models.
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