FINAL EXAM ASTRONOMY QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS) ALREADY
GRADED A+
In the context of nuclear reactions in the Sun, protons collide directly
with other protons in the proton-proton chain to form: Ans✓✓✓Helium
Nuclei
The two most abundant elements in the Sun, with the most abundant
given first, are Ans✓✓✓Hydrogen and Helium
When energy is first produced by fusion deep in the core of the star, that
energy moves outward mostly by what process? Ans✓✓✓Radiation
Which color star is likely to be the hottest? Ans✓✓✓Blue
At an astronomical conference, an astronomer gives a report on a star
that interests astronomers because of hints that it may have a planet
around it. In his report the astronomer gives the average speed with
which this star is moving away from the Sun. How did the astronomer
measure this speed? Ans✓✓✓Doppler shift
Which of the following can astronomers NOT learn from studying the
spectrum of a star? Ans✓✓✓Cant fool me all above.
, In an H-R diagram, where can you see the spectral type of a star
(whether it is an O type star or a G type star, for example)?
Ans✓✓✓Along bottom, horizontal line
Who was the astronomer who is the "H" in H-R diagram?
Ans✓✓✓Hertzsprung.
A star that is quite hot and has a very small radius compared to most
stars is called Ans✓✓✓White dwarf
Which of these stars will take the SHORTEST time to go from the
earliest protostar stage to the main sequence? Ans✓✓✓a star ten times
the mass of our Sun
Which technique allows astronomers to detect exoplanets by causing the
star's position to "wobble"? Ans✓✓✓Doppler shift method
Protostars with mass equal to or less then the mass of the Sun are called
Ans✓✓✓T Tauri Stars
Herbig-Haro (HH) object Ans✓✓✓where a jet from a star in the process
of being born collides with (and lights up) a nearby cloud of interstellar
matter
DETAILED ANSWERS (VERIFIED ANSWERS) ALREADY
GRADED A+
In the context of nuclear reactions in the Sun, protons collide directly
with other protons in the proton-proton chain to form: Ans✓✓✓Helium
Nuclei
The two most abundant elements in the Sun, with the most abundant
given first, are Ans✓✓✓Hydrogen and Helium
When energy is first produced by fusion deep in the core of the star, that
energy moves outward mostly by what process? Ans✓✓✓Radiation
Which color star is likely to be the hottest? Ans✓✓✓Blue
At an astronomical conference, an astronomer gives a report on a star
that interests astronomers because of hints that it may have a planet
around it. In his report the astronomer gives the average speed with
which this star is moving away from the Sun. How did the astronomer
measure this speed? Ans✓✓✓Doppler shift
Which of the following can astronomers NOT learn from studying the
spectrum of a star? Ans✓✓✓Cant fool me all above.
, In an H-R diagram, where can you see the spectral type of a star
(whether it is an O type star or a G type star, for example)?
Ans✓✓✓Along bottom, horizontal line
Who was the astronomer who is the "H" in H-R diagram?
Ans✓✓✓Hertzsprung.
A star that is quite hot and has a very small radius compared to most
stars is called Ans✓✓✓White dwarf
Which of these stars will take the SHORTEST time to go from the
earliest protostar stage to the main sequence? Ans✓✓✓a star ten times
the mass of our Sun
Which technique allows astronomers to detect exoplanets by causing the
star's position to "wobble"? Ans✓✓✓Doppler shift method
Protostars with mass equal to or less then the mass of the Sun are called
Ans✓✓✓T Tauri Stars
Herbig-Haro (HH) object Ans✓✓✓where a jet from a star in the process
of being born collides with (and lights up) a nearby cloud of interstellar
matter
