1. The ecliptic is A. the orbit of earth around the sun.
B. when the moon passes in front of the sun.
C. a plane in space that includes all planets’ orbits around the sun.
D. when the shadow of earth falls on the moon.

2. Celestial bodies that do not lay on the ecliptic include the
A. moon. c. the planets.
B. earth. d. constellations of the Zodiac.

3. From a geocentric perspective, the ecliptic appears as
A. an invisible path in the southern sky, upon which the sun, planets, and zodiac constellations travel
B. an invisible path in the northern sky, upon which the sun, planets, and zodiac constellations travel
C. a straight line in the southern sky upon which the moon rises and sets
D. a disappearing moon or sun, once or twice each year

11. Polaris can be located at azimuth
180˚ b. 45˚ c. 0˚ d. 270˚

12. Humans determine the timing of a 24-hour day by using a/the
sidereal day. b. Zodiac. c. ecliptic plane. d. solar day.

13. The reason we have Leap Year every four years is
A. to prove the groundhog wrong
B. to adjust for an actual lunar month of 29.5 days
C. to adjust for an actual solar year of 365.25 days
D. to adjust for years that don’t have a Blue Moon

14. Which of the following is not a factor in summer being warm in the northern hemisphere?
A. The earth is tilted 23.5⁰, with the northern hemisphere tilted toward the sun
B. The earth is at perihelion, the closest point in its elliptical orbit around the sun.
C. The northern hemisphere experiences the most direct energy from the sun.
D. The length of daylight is longer, allowing a longer period of daily warming.