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Endogenic Processes: Inside Earth Activities

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Endogenic Processes: Inside Earth Activities

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Questions and Answers

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?

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?

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?

Through convection Signup and view all the answers

Where do subduction zones occur?

At convergent plate boundaries Signup and view all the answers

What is the main cause of the Earth's internal heat according to the passage?

Gravitational contraction and radioactive decay of elements Signup and view all the answers

Which of the following is not one of the four long-lived radioactive isotopes mentioned in the passage that continuously produce heat?

Radium-226 Signup and view all the answers

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 Signup and view all the answers

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 Signup and view all the answers

What is the main reason the Earth's interior is still hot today?

Radioactive elements are still undergoing decay and releasing heat Signup and view all the answers