In the Proton-Proton Chain

question 33

Multiple Choice

In the proton-proton chain

• A) no neutrinos are produced.
• B) energy is released because a hydrogen nucleus has a greater mass than a helium nucleus.
• C) no photons are produced.
• D) carbon serves as a catalyst for the nuclear reaction.
• E) energy is produced in the form of gamma rays and the velocity of the created nuclei.

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Definitions:

Correlational Studies

Research methods that examine the relationship between two or more variables without manipulating them to determine cause and effect.

Experiments

Scientific procedures undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.

Case Studies

In-depth analyses or investigations of particular instances or examples, often used to illustrate a specific point or to explore a phenomenon in detail.

External Validity

The extent to which the results of a study can be generalized or applied to other settings, populations, or times.