At an Age of 380,000 Years, the Temperature of the Universe

question 173

Multiple Choice

At an age of 380,000 years, the temperature of the universe had fallen to 3000 K, and electrons could then combine with protons to produce neutral hydrogen gas. What major transition took place in the universe at this time?

• A) The present laws of physics began to apply for the first time.
• B) The universe suddenly lost its electrical charge and became neutral.
• C) Nuclear fusion no longer occurred below this temperature.
• D) The universe became transparent to light for the first time.

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Definitions:

Milgram Experiment

A psychological experiment conducted by Stanley Milgram in the 1960s to study obedience to authority, where participants were instructed to administer electric shocks to another person.

Stanford University Prison Experiment

A psychological study conducted by Philip Zimbardo in 1971 at Stanford University, where students were assigned roles of prisoners and guards to explore the effects of perceived power.

Generalization

Drawing a conclusion about a certain characteristic of a population based on a sample from it.

Logical Support

The provision of reasons or evidence to justify a claim or argument.