Discuss each question with your team. Be prepared to explain the reasoning behind your team's answers after the quiz.

1. How can you make gasses glow?
   • Heating them up
   • Gasses glow all the time, some are just brighter than others
   • Gas never glows, it only absorbs light
   • Cooling them down
2. A spectrum of a black body, a heated gas cloud, and a black body viewed through a gas cloud are examples of ________
   • a continuous, an emission line, and an absorption spectrum.
   • a continuous, an absorption, and an emission line spectrum.
   • an absorption, an emission line, and a continuous spectrum.
   • an absorption, a continuous, and an emission line spectrum.
   • an emission line, an absorption, and a continuous spectrum.
   • an emission line, a continuous, and an absorption spectrum.
3. While observing the night sky you notice four stars: One red, one white, one blue, and one yellow. Which of these stars is hottest and which is coolest?
   • This cannot be determined by their color
   • The red star is hottest and the blue star is coolest
   • The white star is hottest and the yellow star is coolest
   • The white star is hottest and the red star is coolest
   • The blue star is hottest and the red star is coolest
4. Which of the following properties of an object can potentially be determined by observing light emitted by it?
   • Chemical composition
   • Temperature and luminosity
   • Distance and relative motion
   • All of the above
   • None of the above