AST 201 Final Exam Practice Questions

According to the Text Link on "Evolution of Sun-like Stars after the Red Giant Phase" and the lecture notes, what event(s) signal the end of the first Red Giant Phase? a. Burning of Helium in the Core b. Burning of Helium in a Shell c. The "Helium Flash" d. A and C e. B and C

Burning of Helium in the Core & The "Helium Flash"

According to the Text link "Stellar Census" and the lecture notes, the brightest stars visible with the unaided eye are those which are nearest to our solar system True/False

False

According to the reading by Monroe and Williamson (1987), what was Coyote's contribution to the stars in the night sky? a. He strategically placed stars in constellations to provide teaching to humans b. He randomly scattered stars everywhere c. He place a single star far to the South d. A and B e. B and C

He randomly scattered stars everywhere & He place a single star far to the South

According to the Text Link on "Evolution of Sun-like Stars after the Red Giant Phase" and the lecture notes, what event(s) transpire during the Helium Shell-Burning Phase for stars like the Sun? a. A Supernova event b. Shedding of outer layers with a stellar wind c. Formation of a Planetary Nebula d. A and C e. B and C

Shedding of outer layers with a stellar wind & Formation of a Planetary Nebula

According to the Text link "The H-R Diagram" and the lecture notes, what stellar properties are plotted in the H-R diagram? a. Mass vs Radius b. Absolute Magnitude vs Spectral Type c. Size vs Temperature d. Color vs Distance e. Distance vs Spectral Type

b. Absolute Magnitude vs Spectral Type

According to the Text Link on "Evolution of Massive Stars" and the lecture notes, what is the end-product of post-main-sequence evolution for the most massive stars? a. Neutron Star b. Black Hole c. White Dwarf d. Brown Dwarf e. Red Dwarf

b. Black Hole

According to the reading by Monroe and Williamson (1987), how did Black God demonstrate his power to the other gods of creation? a. He flung stars randomly into the heavens b. He stamped his foot 4 times until a small group of stars lodged along his temple c. He chased the seven sisters until they climbed Devil's Tower which grew in height and spirited them into the sky d. He set a star in the far south opposite the "North Fire"

b. He stamped his foot 4 times until a small group of stars lodged along his temple

According the Text link "Classifying Stars with Spectra" and the lecture notes, which Spectral Type represents the most massive stars? a. F b. O c. K d. M e. G

b. O

What does the North Star represent in Navajo Tradition? a. A Chief among chiefs b. The central fire of a celestial hogan c. A bighorn sheep that was placed in the sky d. Sky Coyote e. The Driven-in-stake Star

b. The central fire of a celestial hogan

According to lecture notes, what is the modern name of the star Coyote placed opposite the North Star? a. Sirius b. Polaris c. Canopus d. Betelgeuse e. Rigel

c. Canopus

According to the Text link "Stellar Census" and the lecture notes, which of the following types of star is least abundant in the Milky Way? a. Least massive stars b. Intermediate mass stars c. Most massive stars

c. Most massive stars

According to lecture notes, Sirius has a companion star. Which best describes Sirius's companion? a. Black Hole b. Neutron Star c. White Dwarf d. Pulsar e. Red Giant

c. White Dwarf

According to the Text Link on "Evolution of Sun-like Stars after the Red Giant Phase" and the lecture notes, what is the end-product of post-main-sequence evolution for stars like our Sun? a. Neutron Star b. Black Hole c. White Dwarf d. Brown Dwarf e. Red Dwarf

c. White Dwarf

Which of the following transitions will lead to the initial Red Giant Phase for our Sun, according to the text Weblink on "Evolution from the Main Sequence to Red Giants" and the lecture notes? a.) From Core Hydrogen Burning to Core Helium Burning b.) From Hydrogen Shell Burning to Core Helium Burning c.) From Core Hydrogen Burning to Shell Hydrogen Burning d.) From Core Helium Burning to Shell Helium Burning e.) From Core Hydrogen Burning to Shell Helium Burning

c.) From Core Hydrogen Burning to Shell Hydrogen Burning

According to the lecture notes, what animal is the bright star Sirius most often associated with in Native American lore? a. Beaver b. Snake c. Bear d. Dog e. Eagle

d. Dog

According to the Text link "Classifying Stars with Spectra" and the lecture notes, which Spectral Type is associated with the coolest surface temperature? a. K b. F c. A d. M e. O

d. M

According to the reading by Monroe and Williamson (1987), what does Black God say is the reason for star patterns or "constellations?" a. To provide Navajo deities with a resting place in the sky b. To function as a clock at night-time c. None - they are random patterns d. To provide Humans on Earth with rules to live by e. To function as a calendar

d. To provide Humans on Earth with rules to live by

The North Star (Polaris) is located near the north celestial pole and has a prominent place in indigenous star lore. According to lecture material, which of following is NOT associated with Polaris in modern astronomy? a. Cepheid Variable b. Triple Star System c. Standard Candle d. Post-main sequence star e. Eclipsing variable

e. Eclipsing variable

According to the Text link "Classifying Stars with Spectra" and the lecture notes, which Spectral Type represents our star, the Sun? a. O b. B c. K d. F e. G

e. G

According to the Text link "Stellar Census" and the lecture notes, which of the following types of star is most abundant in the Milky Way? a. O b. A c. G d. K e. M

e. M