uiz Instructions This Quiz has 20 questions from the Content Slides. The Canvas Student Guide provides instructions for taking a quiz. Each question is worth 5 points for a total of 100. The time limit for your quiz is 40 minutes. You may take this quiz twice in order to improve you score if you wish. The highest score of the two attempts will be your grade. The quiz assesses the following learning objectives for this week: Differentiate the properties and formation mechanisms of different types of nebulae within the interstellar medium. Enumerate the physical processes leading to star formation. Explain the mechanisms by which low density gas can begin to contract to form protostars