Third Edition Test Bank Answers Learn to Fly - Understanding Our Universe 3e Complete Test Bank by Stacy Palen. DOCX document preview.
PART II
Test Bank for At Play in the Cosmos:
The Videogame (broken down by Mission)
Mission 1: Learn to Fly
MULTIPLE CHOICE
1. What type of spectrum did you observe for Supernova 1987A?
a. a continuous spectrum c. an absorption spectrum
b. an emission spectrum
2. The Large Magellanic Cloud
a. is a satellite galaxy of the Milky Way.
b. is closer to the Milky Way than the Andromeda Galaxy.
c. has a diameter of 4 kpc.
d. is classified as an irregular galaxy.
e. all of the above
3. Supernova 1987A is most likely the result of
a. the thermonuclear explosion of gas on the surface of a compact star.
b. the explosion of a white dwarf that accreted material from a companion star and became gravitationally unstable.
c. the collision of two neutron stars.
d. the collapse and explosion of a massive star that has exhausted all sources of fuel.
e. none of the above
4. Which of the following best explains how atoms of different elements produce different spectral lines?
a. mass of the nucleus d. number of protons and electrons
b. number of neutrons e. mass of protons
c. mass of the electron
5. Atoms store energy by
a. “promoting” electrons from lower energy states to higher energy states.
b. forcing an electron to travel faster in its orbit about the nucleus.
c. increasing the vibration of the particles in its nucleus.
d. “demoting” electrons from higher energy states to lower energy states.
1. Explain why the gas ejected by the exploding massive star forms an “emission” spectrum.
2. Supernova 1987A is the remnant of a massive star that exploded. In this course, you will learn that more-massive stars live far shorter lives than their less-massive counterparts. Given this insight about stars, what could you conclude about star formation in the Tarantula Nebula?