Early in January the Earth Is Closer to the Sun

question 102

Multiple Choice

Early in January the earth is closer to the Sun than at any other time of year. This position is termed:

• A) equinox.
• B) albedo.
• C) aphelion.
• D) revolution.
• E) perihelion.

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Definitions:

Chair Conformation

A three-dimensional geometric shape of cyclohexane that significantly reduces angular and torsional strain, making it more stable than other conformations.

Trans-Decalin

A specific configuration of decalin (a bicyclic compound) where the hydrogen atoms at the bridgehead positions are on opposite sides.

Stable Conformation

Stable conformation describes the most energetically favorable spatial arrangement of atoms in a molecule, minimizing strain and maximizing stability.

Spiro [4.4]Nonane

A type of spiro compound composed of two cyclobutane rings sharing a single carbon atom, named for its nine total carbon atoms within the structure.