Which of the following statements is FALSE?

1
Which of the following statements is FALSE?
Week 5 Quiz 5

1. Einstein showed that the particle nature of
   electromagnetic radiation can explain the
   photoelectric effect and was awarded the Nobel
   Prize for this
2. 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
3. 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
4. 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
5. 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

2
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?
Week 5 Quiz 6

1. The luminosity of the Sun is 81 times that of the
   star X
2. The typical photon emitted by star X has a lower
   energy than the typical photon emitted by the Sun
3. Star X is reddish in color whereas the Sun is
   yellowish white
4. If both stars were at the same distance from us,
   the Sun would appear 81 times fainter than star X
5. Most of the energy of star X is emitted at a
   longer wavelength than most of the Suns energy

3
Week 5 Quiz 7

• Which of the following statements is FALSE
• Keplers 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 persons future from the positions of
  the planets
• Einstein proposed that mass can be converted into
  energy and vice versa

4
Week 5 Quiz 8

• Which of the following statements is TRUE
• 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

5
Week 5 Quiz 9

• Lets assume that Jupiter is exactly 5 AU from
  the Sun. Which of the following statements is
  TRUE
• 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

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Week 5 Quiz 10

• Say its 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
• Jupiter, Earth, and the Sun are in a straight
  line in that order
• Jupiter is visible to the astronomer on Earth at
  that instant
• 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