1 of 161
Term Definition
The best frequency range in D.
which to study the hot (million-
kelvin) gas found among the
galaxies in the Virgo galaxy
cluster would be in the
following regions of the
electromagnetic spectrum?
A. Radio
B. Infrared
C. X-ray
D. Gamma-ray
Give this one a try later!
True False
Correct definition
, C.
2 of 161
Term Definition
Radio dishes are large in order B.
to:
Select one:
a. increase the range of waves
they can collect.
b. increase their angular
resolution and collect the very
weak radio photons.
c. detect shorter waves than
optical telescopes for superior
resolution.
d. attract funding.
e. give greater amplification.
Give this one a try later!
True False
3 of 161
Term Definition
The best way to study warm D.
(1000 K) young stars forming
behind an interstellar dust cloud
would be to use?
A. X-rays
,B. Infrared Light
C. Ultraviolet Lights
D. Blue Light
Give this one a try later!
True False
Correct definition
B.
4 of 161
Term Definition
In Bohr's model of the atom, E.
electrons:
Select one:
a. move from orbit to orbit in
many small steps.
b. are spread uniformly through
a large, positive mass.
c. only make transitions
between orbitals of specific
energies.
d. can be halfway between
orbits.
e. are not confined to specific
orbits.
Give this one a try later!
, True False
Correct definition
C.
5 of 161
Term Definition
Who discovered that planets A.
move on ellipsis around the
Sun?
A. Ptolemy
B. Aristotle
C. Galileo
D. Kepler
E. Copernicus
Give this one a try later!
True False
Correct definition
D.
6 of 161
Term Definition
Term Definition
The best frequency range in D.
which to study the hot (million-
kelvin) gas found among the
galaxies in the Virgo galaxy
cluster would be in the
following regions of the
electromagnetic spectrum?
A. Radio
B. Infrared
C. X-ray
D. Gamma-ray
Give this one a try later!
True False
Correct definition
, C.
2 of 161
Term Definition
Radio dishes are large in order B.
to:
Select one:
a. increase the range of waves
they can collect.
b. increase their angular
resolution and collect the very
weak radio photons.
c. detect shorter waves than
optical telescopes for superior
resolution.
d. attract funding.
e. give greater amplification.
Give this one a try later!
True False
3 of 161
Term Definition
The best way to study warm D.
(1000 K) young stars forming
behind an interstellar dust cloud
would be to use?
A. X-rays
,B. Infrared Light
C. Ultraviolet Lights
D. Blue Light
Give this one a try later!
True False
Correct definition
B.
4 of 161
Term Definition
In Bohr's model of the atom, E.
electrons:
Select one:
a. move from orbit to orbit in
many small steps.
b. are spread uniformly through
a large, positive mass.
c. only make transitions
between orbitals of specific
energies.
d. can be halfway between
orbits.
e. are not confined to specific
orbits.
Give this one a try later!
, True False
Correct definition
C.
5 of 161
Term Definition
Who discovered that planets A.
move on ellipsis around the
Sun?
A. Ptolemy
B. Aristotle
C. Galileo
D. Kepler
E. Copernicus
Give this one a try later!
True False
Correct definition
D.
6 of 161
Term Definition
