Transcript Which of the following statements is TRUE

Week 5 – Quiz #5
Which of the following statements is FALSE?
A.
Einstein showed that the particle nature of electromagnetic radiation can
explain the photoelectric effect and was awarded the Nobel Prize for this
B.
Each gamma-ray photon is more energetic than a radio photon and therefore
every source of gamma rays is more luminous than every radio source
C.
One of the portions of the electromagnetic spectrum where the atmosphere is
transparent (“windows”) closely matches the portion to which the human eye
is sensitive and this probably resulted from Darwinian evolution
D.
Scientists have directly measured the tiny fluctuations in the Cosmic
Microwave Background Radiation that represent the “seeds” from which
galaxies and clusters of galaxies formed
E.
When you look at the student sitting next to you, you are effectively seeing
them as they were a fraction of a second in the past
Week 5 – Quiz #6
Star X has a surface temperature that is 3 times higher than
that of the Sun. Both stars have exactly the same radius.
Which of the following statements is TRUE?
A. The luminosity of the Sun is 81 times that of the star X
B. The typical photon emitted by star X has a lower energy than the
typical photon emitted by the Sun
C. Star X is reddish in color whereas the Sun is yellowish white
D. If both stars were at the same distance from us, the Sun would
appear 81 times fainter than star X
E.
Most of the energy of star X is emitted at a longer wavelength than
most of the Sun’s energy
Week 5 – Quiz #7
Which of the following statements is FALSE:
A.
B.
C.
D.
E.
Kepler’s first law states that the orbit of each planet in our
Solar System is an ellipse with the Sun located at one of the
foci of the ellipse
We live in an expanding Universe, and yet it is difficult to find
a parking space on this campus!
Electrons within atoms can have one of many possible discrete
energy levels
Astronomy and astrophysics deal primarily with telling a
person’s future from the positions of the planets
Einstein proposed that mass can be converted into energy and
vice versa
Week 5 – Quiz #8
Which of the following statements is TRUE:
A.
B.
C.
D.
E.
The Moon is made of green cheese and the first astronauts who
landed on the Moon discovered this very tasty fact
The wave-particle duality of electromagnetic radiation refers to
the fact that it can be described as a wave and/or as packets or
bundles of energy known as “photons”
Wavelength is directly proportional to frequency in the case of
electromagnetic radiation
The luminosity of a black body is proportional to the square of
its surface area
The inverse square law states that the flux from a star is
inversely proportional to the fourth power of is distance from us
Week 5 – Quiz #9
Let’s assume that Jupiter is exactly 5 AU from the Sun. Which of the
following statements is TRUE:
A.
B.
C.
D.
E.
The apparent angular diameter of the Sun as seen by an
astronomer on Jupiter is 1/10 of a degree
The average photon from the Sun that shines on Jupiter has a
lower frequency than the average photon from the Sun that shines
on the Earth
A solar panel takes 5 times longer to heat up a house compared to
an identical solar panel and house set up on Earth
The orbital period of Jupiter is 125 years
Light takes 40 minutes to travel from the Sun to Jupiter and back
Week 5 – Quiz #10
Say it’s midday for an astronomer on Jupiter and, at the same instant,
it is midnight for an astronomer on Earth. The sunlit face of the
Earth looks like a full circle (i.e., a “full earth’’) to the astronomer
on Jupiter. Which of the following statements is TRUE:
A.
B.
Jupiter, Earth, and the Sun are in a straight line in that order
Jupiter is visible to the astronomer on Earth at that instant
C.
D.
E.
Jupiter is not visible to the astronomer on Earth at that instant
Jupiter, the Sun, and Earth form a right angle
Earth, Jupiter, and the Sun are in a straight line in that order