Download Week 5 (10/16) – Quiz #11

Week 5 (10/16) – Quiz #11
Which of the following statements is FALSE:
A. Wien’s law states that the temperature of a black body and
the wavelength of peak radiation bear an inverse relation to
each other
B. The luminosity of a black body is proportional to its
temperature raised to the fourth power
C. Atoms are capable of absorbing and re-emitting photons
D. The energy of a photon is given by the formula: E = mc2
Week 5 (10/16) – Quiz #12
Which of the following statements most accurately describes
what happens when I HOLD A PIECE OF CHALK IN
MY HAND:
A.
B.
C.
D.
A gravitational force and an electromagnetic force are
canceling each other
Only a gravitational force is acting on the piece of chalk
Only an electromagnetic force is acting on the piece of
chalk
A gravitational force and a strong nuclear force are
canceling each other
Week 5 (10/16) – Quiz #13
Which of the following statements comparing our Sun to another
star X located at the outer edge of the Milky Way galaxy is
TRUE:
A.
B.
C.
D.
They have the same orbital period around the center of our
Galaxy
Star X takes a longer time than the Sun to orbit the Galaxy’s
center
The Sun takes a longer time than Star X to orbit the
Galaxy’s center
Star X and the Sun are at the same distance from the center
of the Milky Way
Week 5 (10/18) – Quiz #14
Two stars A and B have the same luminosity, but B
appears to be 4 times brighter than A. Which of the
following statements must be TRUE?
A.
B.
C.
D.
Stars A and B have the same temperature
Star B is twice as large as star A
Star B is twice as far away as star A
Star A is twice as far away as star B
Week 5 (10/18) – Quiz #15
Which of the following statements is FALSE?
A.
B.
C.
D.
Elliptical galaxies are classified E0 to E7 in order of
increasing ellipticity (i.e. increasing degree of flattening)
An SBc spiral galaxy and an Sbc spiral galaxy have
different bulge-to-disk ratios
Irregular galaxies are a sub-class of disk galaxies
An SBd galaxy’s spiral arms are more tightly wound (i.e.
more closed) than an Sab galaxy’s spiral arms