Palen Corporate Agenda Test Questions & Answers - Understanding Our Universe 3e Complete Test Bank by Stacy Palen. DOCX document preview.
Mission 12: Corporate Agenda
MULTIPLE CHOICE
1. Which of the following accurately describes the energy source for the white dwarf at the center of the Ant Nebula?
a. hydrogen fusion
b. helium fusion
c. carbon fusion
d. gravitational contraction
e. remnant heat (i.e., it is continuously cooling off as it radiates light)
2. Approximately what percentage of stars form in binary systems?
a. 5% d. 50%
b. 10% e. 80%
c. 25%
3. Which of the following most closely approximates the surface temperature of a white dwarf?
a. 100 K d. 1,000,000 K
b. 5,000 K e. 5,000,000 K
c. 50,000 K
4. Which of the following objects would not classify as a planetary nebula?
a. Orion Nebula d. Cat’s Eye Nebula
b. Eskimo Nebula e. Butterfly nebula
c. Ant Nebula
5. A young white dwarf with a surface temperature of 105 K will produce a majority of its radiation in which wavelength region of the electromagnetic spectrum?
a. radio waves d. ultraviolet
b. microwaves e. gamma Rays
c. visible light
1. What causes the gas in the lobes of the Ant Nebula to glow?
2. If white dwarfs typically have a radius on the order of the Earth’s, why are they so luminous?