Quiz 36
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What means in the year of our Lord?
A.D. A.D. stands for Anno Domini, which is Latin for in the year of our Lord.
Which calendar eliminated leap years for all century years except those evenly divisible by 400?
Gregorian calendar
What Northern-Hemisphere season begins with the June solstice?
summer The June solstice marks the start of summer in the Northern Hemisphere.
What climate zone annually experiences at least one day of darkness and one day of light?
Frigid Zone The Frigid Zone includes areas near the poles where extreme variations in daylight occur.
What is the average length of time between two upper transits of the sun?
mean solar day A mean solar day is defined as the average length of a solar day over the year, which smooths out small variations caused by Earth’s orbit and tilt. That average comes out to 24 hours.
The full circle on the celestial sphere that connects both celestial poles and passes directly over the observer is the _______.
celestial meridian • Runs from the north celestial pole to the south celestial pole • Passes directly overhead (through the zenith) • Is the line along which objects reach their highest point in the sky (upper transit)
The mean solar time at the Prime Meridian is called?
UTC UTC stands for Coordinated Universal Time, which is the time standard used worldwide.
The system in which the day is divided into a.m. and p.m. is called?
Civil
The tropics are bound on the south by an imaginary circle called the Tropic of?
Capricorn The Tropic of Capricorn is located at approximately 23.5 degrees south latitude.
The yearly path of the sun intersects the celestial equator at two points called the ?
equinoxes