ASTRO 1 FINAL EXAM QUESTIONS WITH ANSWERS #10
If a planet is seeing its moon in the new phase right now, in what phase would the
planet appear to be when viewed from its moon? - correct answer full planet
What is the reason for the seasons on earth - correct answer earth is tilted with respect
to the sun by about 23.5 degrees
As compared to a cool star a hotter star emits - correct answer shorter wavelength,
higher frequency, bluer color
At approximately what time does the third quarter moon rise - correct answer midnight
The electrons in a cloud of hydrogen gas are making the transition from excited states
to the ground state. What does the spectrum of this cloud of gas look like? - correct
answer it will consist of a few bright emission lines at a very specific wavelengths
If earth had its orbit changed so that at all the point along its orbit it was always the
same distance from the sun (circular) how would this effect the seasons on earth? -
correct answer the same as they are now
I detect a star giving off more ultraviolet light than green light. What property of the star
can I estimate with this info - correct answer its temperature
What do you expect the spectrum of an object that is 1,000,000 kelvin to be like -
correct answer it should peak at x ray wavelengths
What time of year is it dark all day (and night) at the South pole - correct answer june
A planet with its rotation axis tilted by 40 degrees relative to its orbital plane around its
star would - correct answer have dark all the time on the south pole during its winter
The planets are seen in the Zodiac constellations because - correct answer the orbit the
sun in the same plane as the earth does
What makes a transition from higher energy state to lower energy state when a photon
is emitted by an atom? - correct answer electron
13. Which of the following is FALSE?
A) Light, radio, ultraviolet, and gamma rays are all forms of electromagnetic radiation.
B) Emission spectra are characterized by narrow, bright lines of di fferent colors.
C) An absorption spectrum appears as a continuous spectrum interrupted by a series of
Dark lines.
D) The energy of a photon is inversely proportional to the wavelength of the radiation.
E) The wavelengths of the emission lines produced by an element are di fferent from the
, Wavelengths of an absorption line produced by the same element. - correct answer The
wavelengths of the emission lines produced by an element are different from the
wavelengths of an absorption line produced by the same element
One of the lines of hydrogen has a wavelength of 121.6nm. If a cloud of hydrogen gas is
moving towards us at 200 km/s, what will we detect? - correct answer An emission line
in the cloud's spectrum with a wavelength shorter than 121.6 nm
Why does light come in different colors - correct answer differences in wavelength
Say you are in the bottom of Happy Valley. How does the force of gravity compare to
what it would be on top of Mount Nittany? - correct answer slightly greater in happy
valley than on mount nittany
What kind of telescope would have to be put in space to be effective - correct answer
xray
Dark lines in an absorption spectrum represent - correct answer particular energies of
light coming from a distant object that are absorbed by material in between
If the mass of the sun were cut in half, how would the force between the sun and earth
change? - correct answer it would decrease by a factor of two
In what way does a 30 meter telescope outperform a 10 meter telescope - correct
answer the images of a 30 meter are 9 times brighter than a 10 meter
On a planet whose moon is the same orbital plane as the planets orbit around its star,
how often will solar eclipses occur - correct answer once every orbit of its moon (its
month)
Say that our moon was full on May 1st 2007. When was the next first quarter phase
after that full moon? - correct answer may 22 (3 weeks later)
Why does a neon light appear red? - correct answer it gives off an emission spectrum
with mostly red spectral lines
Why dont we see the constellation Orion all year? - correct answer As the Earth orbits
the Sun, its nighttime side points to different constellations at different points along its
orbit
From earth, in which type of constellation might you find the planet Saturn? - correct
answer only in a Zodiac constellation
What is the main constituent of the atmosphere of Venus? - correct answer carbon
dioxide
If a planet is seeing its moon in the new phase right now, in what phase would the
planet appear to be when viewed from its moon? - correct answer full planet
What is the reason for the seasons on earth - correct answer earth is tilted with respect
to the sun by about 23.5 degrees
As compared to a cool star a hotter star emits - correct answer shorter wavelength,
higher frequency, bluer color
At approximately what time does the third quarter moon rise - correct answer midnight
The electrons in a cloud of hydrogen gas are making the transition from excited states
to the ground state. What does the spectrum of this cloud of gas look like? - correct
answer it will consist of a few bright emission lines at a very specific wavelengths
If earth had its orbit changed so that at all the point along its orbit it was always the
same distance from the sun (circular) how would this effect the seasons on earth? -
correct answer the same as they are now
I detect a star giving off more ultraviolet light than green light. What property of the star
can I estimate with this info - correct answer its temperature
What do you expect the spectrum of an object that is 1,000,000 kelvin to be like -
correct answer it should peak at x ray wavelengths
What time of year is it dark all day (and night) at the South pole - correct answer june
A planet with its rotation axis tilted by 40 degrees relative to its orbital plane around its
star would - correct answer have dark all the time on the south pole during its winter
The planets are seen in the Zodiac constellations because - correct answer the orbit the
sun in the same plane as the earth does
What makes a transition from higher energy state to lower energy state when a photon
is emitted by an atom? - correct answer electron
13. Which of the following is FALSE?
A) Light, radio, ultraviolet, and gamma rays are all forms of electromagnetic radiation.
B) Emission spectra are characterized by narrow, bright lines of di fferent colors.
C) An absorption spectrum appears as a continuous spectrum interrupted by a series of
Dark lines.
D) The energy of a photon is inversely proportional to the wavelength of the radiation.
E) The wavelengths of the emission lines produced by an element are di fferent from the
, Wavelengths of an absorption line produced by the same element. - correct answer The
wavelengths of the emission lines produced by an element are different from the
wavelengths of an absorption line produced by the same element
One of the lines of hydrogen has a wavelength of 121.6nm. If a cloud of hydrogen gas is
moving towards us at 200 km/s, what will we detect? - correct answer An emission line
in the cloud's spectrum with a wavelength shorter than 121.6 nm
Why does light come in different colors - correct answer differences in wavelength
Say you are in the bottom of Happy Valley. How does the force of gravity compare to
what it would be on top of Mount Nittany? - correct answer slightly greater in happy
valley than on mount nittany
What kind of telescope would have to be put in space to be effective - correct answer
xray
Dark lines in an absorption spectrum represent - correct answer particular energies of
light coming from a distant object that are absorbed by material in between
If the mass of the sun were cut in half, how would the force between the sun and earth
change? - correct answer it would decrease by a factor of two
In what way does a 30 meter telescope outperform a 10 meter telescope - correct
answer the images of a 30 meter are 9 times brighter than a 10 meter
On a planet whose moon is the same orbital plane as the planets orbit around its star,
how often will solar eclipses occur - correct answer once every orbit of its moon (its
month)
Say that our moon was full on May 1st 2007. When was the next first quarter phase
after that full moon? - correct answer may 22 (3 weeks later)
Why does a neon light appear red? - correct answer it gives off an emission spectrum
with mostly red spectral lines
Why dont we see the constellation Orion all year? - correct answer As the Earth orbits
the Sun, its nighttime side points to different constellations at different points along its
orbit
From earth, in which type of constellation might you find the planet Saturn? - correct
answer only in a Zodiac constellation
What is the main constituent of the atmosphere of Venus? - correct answer carbon
dioxide
