What Is the Primary Reason for the Inside of Earth

question 38

Multiple Choice

What is the primary reason for the inside of Earth being hot?

• A) No heat is being generated, but Earth's outer layers have prevented the escape of heat trapped during the planet's initial formation.
• B) The decay of radioactive elements is creating heat in Earth's inner layers.
• C) The nuclear process of fusing hydrogen into helium like that found in stars is at work in Earth's interior.
• D) Huge quantities of oil and natural gas occasionally burn deep within Earth.

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Definitions:

Enhancing Taste

The process of improving the flavor of food or drink to make it more appealing.

Shelf Life

The time period during which a product, such as food or medicine, remains safe and effective to use.

Calorie

A unit for measuring the heat value of food.

Heat Value

The amount of heat produced by the complete combustion of a given substance, often measured in Joules per kilogram (J/kg) or British Thermal Units (BTU).