Lesson Four : Activities and Quizzes
Activity 1: QuizWhat is a protostellar disk?
The dense core of a protostarA stellar nurseryThe shell of gas and dust surrounding a forming starThe dust that has been blown away off of a new star
True/False : All stars stop nuclear reactions when they have a carbon core
The manner of a star’s death is determined by its
Why do planetary nebulae have this name?
Planets form in themThey are formed from disintegrated planetsThey often look like planets when observed in visible lightThey have the same radio signature as planets
A star doesn’t have enough gravity to hold itself together any moreA star’s outer layers are blown off in stellar windA sudden influx of material causes a runaway nuclear reactionAs nuclear fusion ceases, a star's outer layers bounce off of its dense core
Infinitely dense and infinitely largeInfinitesimally small and infinitely massiveInfinitely massive and infinitely largeInfinitely large and infinitesimally light
Escaping matterEscaping lightEnergy being emitted by the black hole itselfEnergy being emitted from material falling into the black hole