Do you think it is possible that a red supergiant could harbor an advanced civilization? Explain your reasoning.
What will be an ideal response?
Question 2Which of the following best describes convection?
A) It is the process by which rocks sink in water.
B) It is the process in which warm material expands and rises while cool material contracts and falls.
C) It is the process in which warm material gets even warmer and cool material gets even cooler.
D) It is the process in which a liquid separates according to density, such as oil and water separating in a jar.
E) It is the process in which bubbles of gas move upward through a liquid of the same temperature.
Question 3Like other solid bodies in the solar system, Earth's surface was kept molten by
A) radioactivity.
B) differentiation.
C) convection.
D) bombardment by small bodies.
E) the solar nebula.
Question 4Most of the planets discovered around other stars are more massive than Jupiter.
Indicate whether the statement is true or false
Question 5Why do astronomers speak in terms of redshifts rather than distances to faraway objects?
What will be an ideal response?
Question 6Hot Jupiters are thought to have moved closer to their parent star than where they originated due to:
A) gravitational interactions with the gas disk.
B) magnetic attraction to the parent star.
C) interactions with another star.
D) large impacts.
E) many small impacts.
Question 7Which internal energy source is the most important in continuing to heat the terrestrial planets today?
A) accretion
B) differentiation
C) radioactivity
D) tidal heating
E) all of the above
Quick Reply
