Download Midterm II Jeopardy

Astro C10 Midterm II Jeopardy
Round I:
Planets:
$200 - This planet occasionally has dust storms which obscure its ENTIRE surface. (Mars)
$400 - You can only see these planets close to the horizon (45 degrees or less). (Venus &
Mercury)
$600 - This is how we observed the rings around Uranus. (Occultation)
$800 - These two planets most closely resemble the composition of the Sun and the solar nebula.
(Jupitar & Saturn)
Ponies (exoplanets):
$200 - Astronomers at this University have found the most exoplanets (Berkeley or Cal)
$400 - These are the two main methods of detecting exoplanets (Doppler method and Transits)
$600 – In a star/planet system, both the star and the planet orbit this (Center of mass)
$800 - The first exoplanet was found by a team from this country (Switzerland)
Sharp Things (stars):
$200 - These tell us about the composition of the outer layers of stars. (Absorption lines)
$400 - Spectral classification of stars is based mostly on this (Temperature)
$600 – This is the factor by which the luminosity of a star changes when its radius is increased
by 3. (9)
$800 - This is what we call a rotating neutron star with a powerful jet that crosses our line of
sight. (Pulsar)
Potent Potables (Misc):
$200 - These come from the Oort cloud and sometimes visit the sun only once (Comets)
$400 - Pluto is now called this. (Dwarf planet)
$600 – This is the event that killed the remaining dinosaurs and 2/3 of all life (K-T Extinction)
$800 - A novae can result when you have these two objects near each other (WD and other star,
red giant)
Round II:
The Sun:
$400 - This is a violent release of energy from the sun (solar flare)
$800 - This is considered the “visible” surface of the sun (photosphere)
$1200 – Every 11 years, the sun reverses this (Its magnetic polarity)
$1600 - This is the approximate temperature of the sun’s core (10^7 K, 10 million K)
Vowels (Stellar Evolution):
$400 - This is the source of energy for main sequence stars. (Hydrogen Fusion)
$800 - Before reaching the MS, a protostar is doing this (Contracting)
$1200 – When a star first leaves the MS it becomes this (Red Giant)
$1600 - This prevents collapse of the star at the center of a planetary nebula (Electron
degeneracy pressure)
Sharp Things (stars):
$400 - This “failed star” did not have a high enough T to sustain long-term fusion (BD)
$800 - An “HR diagram” is a plot of which two quantities (T(or spectral type) vs. L(or absolute
mag))
$1200 – More luminous stars tend to live (shorter)
$1600 - Globular clusters contain this type of stars (old)
Potent Potables (Misc):
$400 - This event releases heavy elements into space (Supernova)
$800 - When an iron core from a large star collapses, this type of new star is formed (Neutron)
$1200 – This theory predicts the warping of space and time (General Theory of Relativity)
$1600 - This defines the maximum size of a black hole (Schwarzschild radius)
Final Jeopardy:
Category: Stellar Evolution
After the core of a star has depleted its supply of H, it starts fusing this element to produce what
other two elements?