Explain How Radioactive Decay Has Always Warmed the Earth from the Inside,and

question 17

Multiple Choice

Explain how radioactive decay has always warmed the earth from the inside,and nuclear fusion has always warmed the earth from the outside.

• A)Much heat was released as matter coalesced to form the earth.This heat resulted in the production of radioactive isotopes,which still reside within the earth today and are a source of internal heat.Our primary external source of heat is from the fusion of hydrogen within the sun.
• B)The inner Earth is made of fissioning heavy elements while the sun is made of lighter fusing elements.
• C)Radioactive elements have been within Earth since it was created while the sun is made of fusing hydrogen atoms.
• D)All of the above are reasonable answers.

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Definitions:

Approach-Approach Conflict

A psychological conflict that occurs when an individual must choose between two desirable goals or outcomes.

Worker Motivation

The set of internal and external factors that stimulate workers to take actions that lead to achieving a goal.

Varied Tasks

Tasks that differ in nature, complexity, or requirements, used to stimulate different cognitive processes or to prevent monotony in experimental or work settings.

Specific Goals

Objectives that are clearly defined, measurable, achievable, relevant, and time-bound.