The Idea of Dark Matter Arose to Explain Gravitational Effects

question 30

Multiple Choice

The idea of dark matter arose to explain gravitational effects observed in galaxies and clusters of galaxies. However, studies of the early universe (especially of the cosmic microwave background and of chemical abundances) also tell us something about dark matter. What do they tell us?

• A) They add further support to the idea that dark matter really exists and is made of non-ordinary (nonbaryonic) matter, such as WIMPs.
• B) They do not support the conclusion that dark matter is the dominant form of matter in the universe.
• C) They tell us that dark matter probably exists, but that it must be made of ordinary matter in the form of dim objects in galactic halos.
• D) They tell us that dark matter was produced during the era of nuclei.

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Definitions:

Computer Network

A system of interconnected computers and devices that can exchange data and share resources amongst each other.

Bridge

A device that is used to send data between different collision domains in a network, depending on where the recipient device is located.

Collision Domain

A network segment where data packets can collide with one another when being sent on a shared medium, often requiring retransmission.

Sends Data

The process of transmitting information from one computer, device, or application to another.