The Cosmic Microwave Background Gives Us a View of the Universe

question 65

Multiple Choice

The cosmic microwave background gives us a view of the universe when it was

• A)14 billion years old.
• B)about 1 million years old.
• C)380,000 years old.
• D)3- 5 minutes old.

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Definitions:

Principle Parts

The essential components or sections of a mechanism or system that are critical to its functioning.

Atom

The smallest constituent unit of ordinary matter that constitutes a chemical element.

No Charge

A state or condition where an object does not have a net electrical charge, meaning it has an equal number of protons and electrons.

Neutron

One of the principal parts of an atom. The neutron has no charge and is part of the nucleus.