Twice Per Year, When Day and Night Are Equal in Length

question 79

Multiple Choice

Twice per year, when day and night are equal in length, the Sun is at one of two positions in the sky known as equinoxes. These points are the intersections of which two planes in the sky?

• A) celestial equator and ecliptic
• B) celestial meridian and celestial equator
• C) ecliptic and celestial meridian
• D) ecliptic and arctic circle

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Definitions:

Estimated Cost Line

A projection or forecast of the expected costs associated with a project, product, or service over a specified period.