Question 13 [1 point) Driving eastward just before sunrise, if you observe the Moon in the eastern sky, its phase must be: r\": waning Crescent \\. Ix' I . -. full Moon \\___1 (\"j new moon (5:. waxing Gibbous Question 14 (1 point) The Orion nebula, M-42, is a hot, thin cloud of glowing gas, so its spectrum is: If "j. a continuum, strongest in the color red {Ft} a few bright lines against a dark background (sz1 a continuum, but with both bright and dark lines mixed in ("3. a few dark lines in the continuum \\/ Question 15 (1 point) From full Moon to third quarter Moon takes about a week If True If False Question 16 [1 point) What problem does adaptive optics correct? /""- i j. the opacity of the Earth's atmosphere to some wavelengths of light . I M. .f \"X ix 5. chromatic aberration due to use of only a single lens objective / I: it} turbulence in the Earth's atmosphere which creates twinkling \\ (i) defects in the optics of the telescope, such as the original Hubble mirror \\