If the Moon in Its Orbit Around Earth Moves Alternately

question 279

Multiple Choice

If the Moon in its orbit around Earth moves alternately between Earth and the Sun and behind Earth from the Sun, why do observers not see solar and lunar eclipses every month?

• A) The Moon's motion in its orbit is so slow that it reaches eclipse position only once every 6 months.
• B) The Moon's orbital plane is slightly inclined to the ecliptic.
• C) The Moon's orbital plane is at right angles to the ecliptic.
• D) The Moon's orbital plane is inclined slightly to the celestial equator, which is the path of the Sun across the sky.

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Definitions:

Cell Membrane

The lipid bilayer that encloses a cell, controlling the passage of substances in and out, thus maintaining the cell's integrity and environment.

Protein Molecules

Large, complex molecules that play many critical roles in the body, made up of chains of amino acids.

Large Protein Anions

Molecules consisting of large proteins that carry a negative charge.

Neuron

A specialized cell in the nervous system that transmits information through electrical and chemical signals, serving as the basic building block of the brain and nervous system.