1
ASTRONOMY 1010 FINAL EXAM QUESTIONS
WITH ANSWERS
How does a Charge-coupled Device (CCD) help with astronomical observations?
It increased the quantum efficiency to 100% allowing astronomers to see dimmer
objects
It decreases the quantum efficiency to 10% allowing astronomers to see brighter
objects
It increases the aperture size of telescopes improving resolution
It increases the focal length of telescopes improving resolution - correct-answer -it
increased the quantum efficiency to 100% allowing astronomers to see dimmer
objects
Which two features of a telescope and the light being observed affect the
diffraction limit of a telescope?
Select both features.
wavelength of light being observed
use of lenses versus mirrors in the telescope
focal length of the telescope
aperture size of the telescope - correct-answer -wavelength of light being
observed and aperture size of the telescope
, 2
What is the technique called that uses an array of telescopes connected through a
computer system to simulate one large telescope?
Adaptive optics
Diffraction
Interferometry
Combinatorics - correct-answer -Interferometry
Which technique uses a laser of known wavelength and deformable mirrors to
correct for the disturbances in the light collected as it travels through the
atmosphere?
CCD
Interferometry
Adaptive Optics
Diffraction - correct-answer -adaptive optics
What was the original solution to avoiding light pollution when using a telescope?
Putting special filters on the telescope
Only using space telescopes
Building a large wall around the telescope
Building the telescope at high elevation far away from large cities - correct-answer
-Building the telescope at high elevation far away from large cities
, 3
What new source of light pollution is becoming unavoidable no matter where a
telescope is built?
An increase is airplane traffic
The light emitted from the heating of the atmosphere
The Aurora stretching towards the equator
Satellites reflecting light from the Sun - correct-answer -Satellites reflecting light
from the Sun
Which categories of light in the electromagnetic spectrum can only be viewed by
space telescopes?
Choose all that apply, it may be useful to use the image from the slides on
"windows in the atmosphere".
Most of the Ultraviolet
A small section of the Ultraviolet
Most of the Infrared
Radio
X-ray
A small section of the Infrared
Gamma - correct-answer -Most of the Infrared, X-ray, Gamma, most of the
ultraviolet
ASTRONOMY 1010 FINAL EXAM QUESTIONS
WITH ANSWERS
How does a Charge-coupled Device (CCD) help with astronomical observations?
It increased the quantum efficiency to 100% allowing astronomers to see dimmer
objects
It decreases the quantum efficiency to 10% allowing astronomers to see brighter
objects
It increases the aperture size of telescopes improving resolution
It increases the focal length of telescopes improving resolution - correct-answer -it
increased the quantum efficiency to 100% allowing astronomers to see dimmer
objects
Which two features of a telescope and the light being observed affect the
diffraction limit of a telescope?
Select both features.
wavelength of light being observed
use of lenses versus mirrors in the telescope
focal length of the telescope
aperture size of the telescope - correct-answer -wavelength of light being
observed and aperture size of the telescope
, 2
What is the technique called that uses an array of telescopes connected through a
computer system to simulate one large telescope?
Adaptive optics
Diffraction
Interferometry
Combinatorics - correct-answer -Interferometry
Which technique uses a laser of known wavelength and deformable mirrors to
correct for the disturbances in the light collected as it travels through the
atmosphere?
CCD
Interferometry
Adaptive Optics
Diffraction - correct-answer -adaptive optics
What was the original solution to avoiding light pollution when using a telescope?
Putting special filters on the telescope
Only using space telescopes
Building a large wall around the telescope
Building the telescope at high elevation far away from large cities - correct-answer
-Building the telescope at high elevation far away from large cities
, 3
What new source of light pollution is becoming unavoidable no matter where a
telescope is built?
An increase is airplane traffic
The light emitted from the heating of the atmosphere
The Aurora stretching towards the equator
Satellites reflecting light from the Sun - correct-answer -Satellites reflecting light
from the Sun
Which categories of light in the electromagnetic spectrum can only be viewed by
space telescopes?
Choose all that apply, it may be useful to use the image from the slides on
"windows in the atmosphere".
Most of the Ultraviolet
A small section of the Ultraviolet
Most of the Infrared
Radio
X-ray
A small section of the Infrared
Gamma - correct-answer -Most of the Infrared, X-ray, Gamma, most of the
ultraviolet
