What Can Simultaneously Solve Both the Flatness and Horizon Problems

question 10

Multiple Choice

What can simultaneously solve both the flatness and horizon problems in cosmology?

• A) GUTs
• B) quantum mechanics
• C) inflation
• D) dark energy

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Definitions:

Jan Van Eyck

A Flemish painter active in the 15th century, known for his detailed portraiture and use of oil paint, contributing significantly to the Northern Renaissance.

Woodcut

A printmaking technique that involves carving an image on a wooden block, applying ink to the raised surfaces, and then printing it onto paper, known for its bold lines and clear contrasts.

Etching

A kind of engraving in which the design is incised in a layer of wax or varnish on a metal plate. The parts of the plate left exposed are then etched (slightly eaten away) by the acid in which the plate is immersed after incising. See also drypoint, intaglio.

Engraving

The process of incising a design in hard material, often a metal plate (usually copper); also, the print or impression made from such a plate.