PHY 111 Final Exam
("Olbers Paradox") - ANS-the sky is infinitely filled with stars however the sky is still darkish
five spacecraft that have left or will leave the Solar System and in no way go back -
ANS-Pioneer 10 and 11
New Horizons
Voyager 1 and a pair of
A well-known American author become one of the first to reply this
paradox - ANS-Edgar Allen Poe
A small telescope, or maybe binoculars, exhibits the cloud of the Milky Way is without a doubt
composed of: - ANS-hundreds or thousands and thousands of stars (~one hundred billion, if you
can see all of them).
All galaxies for which we are able to probe into
the center have a vital black hole. Why? Where do they come from? - ANS-no person knows but
All of those stars are orbiting something very huge known as Sgr A* - ANS-which is thought to
be a supermassive blackhole with a mass ~ 4 million Msun.
All 3 of these techniques reveal that there's - ANS-~40X extra mass in clusters than may be
accounted for in stars and the recent gas.
Are Dark Matter and Dark Energy associated with each other? - ANS-no evidence to expose it
however who is aware of
As individuals and as a society, we adore to leave monuments at the back of - ANS-So that
once we're long gone, it is going to be remembered that after we were here
Astrobiology - ANS-The examine of life beyond Earth
astronomers confer with those as metals, which for them, - ANS-heavier than Helium
Atoms integrate to form Molecules - ANS-and molecules integrate to form EVERYTHING
Based on observations and the appearance of other galaxies, the MW probable has this
fundamental shape and size - ANS-bulge, disk, & halo
, Based on the Kepler mission, it appears - ANS-as if maximum stars have planets, and it is
probably that each big name would have one inside the habitable zone (our solar device has
~two); so perhaps NHP ~ 1011 , i.E. About one hundred billion
But Slipher had no way of: - ANS-measuring the distances to the galaxies;
in reality, he didn't even understand what they had been
Cepheid Variables - ANS-In 1916, Henrietta Leavitt was analyzing stars name Cepheid
Variables
• Cepheids are extraordinarily luminous giant stars that pulsate
• Leavitt discovered the "Period - Luminosity" for Cepheids
• Using Cepheids, Harlow Shapley may want to measure the distance
to globular clusters and determine the scale of the MW.
• Since Cepheids are so shiny, they've been used to determine
distances both inside and outside the MW
Charles Messier - ANS-In the early nineteenth century, Charles Messier changed into hunting
for comets
Clusters of Clusters are called? - ANS-Superclusters. They're the biggest
systems regarded inside the Universe (~one hundred Mpc across).
Cosmological Inflation - ANS-In the 1980's, it was proposed that early in its records, the
Universe went thru a fast growth called Inflation. This solves problems, the Horizon Problem
and the Flatness Problem.
Could it be normal count number that is just too faint for us to look? - ANS-This may be in the
shape baryonic be counted (product of baryons, i.E. Protons
and neutrons) inside the shape of cool gasoline, faint stars, neutron stars, black holes,
i.E. Massive Compact Halo Objects (MACHOS).
These were searched for and discovered, however no longer almost sufficient to
account for the missing mass.
• Big Bang Cosmology suggests that there couldn't have been this much
matter in baryons (everyday rely composed of protons and neutrons).
• Neutrinos, because they have mass, have interaction most effective through the Weak Force
and
Gravity were proposed, however they must circulate too fast to clump collectively
on the scales of individual galaxies
Dark electricity - ANS-Energy this is causing the expansion of the Universe to accelerate; we
have no
concept what it is!
("Olbers Paradox") - ANS-the sky is infinitely filled with stars however the sky is still darkish
five spacecraft that have left or will leave the Solar System and in no way go back -
ANS-Pioneer 10 and 11
New Horizons
Voyager 1 and a pair of
A well-known American author become one of the first to reply this
paradox - ANS-Edgar Allen Poe
A small telescope, or maybe binoculars, exhibits the cloud of the Milky Way is without a doubt
composed of: - ANS-hundreds or thousands and thousands of stars (~one hundred billion, if you
can see all of them).
All galaxies for which we are able to probe into
the center have a vital black hole. Why? Where do they come from? - ANS-no person knows but
All of those stars are orbiting something very huge known as Sgr A* - ANS-which is thought to
be a supermassive blackhole with a mass ~ 4 million Msun.
All 3 of these techniques reveal that there's - ANS-~40X extra mass in clusters than may be
accounted for in stars and the recent gas.
Are Dark Matter and Dark Energy associated with each other? - ANS-no evidence to expose it
however who is aware of
As individuals and as a society, we adore to leave monuments at the back of - ANS-So that
once we're long gone, it is going to be remembered that after we were here
Astrobiology - ANS-The examine of life beyond Earth
astronomers confer with those as metals, which for them, - ANS-heavier than Helium
Atoms integrate to form Molecules - ANS-and molecules integrate to form EVERYTHING
Based on observations and the appearance of other galaxies, the MW probable has this
fundamental shape and size - ANS-bulge, disk, & halo
, Based on the Kepler mission, it appears - ANS-as if maximum stars have planets, and it is
probably that each big name would have one inside the habitable zone (our solar device has
~two); so perhaps NHP ~ 1011 , i.E. About one hundred billion
But Slipher had no way of: - ANS-measuring the distances to the galaxies;
in reality, he didn't even understand what they had been
Cepheid Variables - ANS-In 1916, Henrietta Leavitt was analyzing stars name Cepheid
Variables
• Cepheids are extraordinarily luminous giant stars that pulsate
• Leavitt discovered the "Period - Luminosity" for Cepheids
• Using Cepheids, Harlow Shapley may want to measure the distance
to globular clusters and determine the scale of the MW.
• Since Cepheids are so shiny, they've been used to determine
distances both inside and outside the MW
Charles Messier - ANS-In the early nineteenth century, Charles Messier changed into hunting
for comets
Clusters of Clusters are called? - ANS-Superclusters. They're the biggest
systems regarded inside the Universe (~one hundred Mpc across).
Cosmological Inflation - ANS-In the 1980's, it was proposed that early in its records, the
Universe went thru a fast growth called Inflation. This solves problems, the Horizon Problem
and the Flatness Problem.
Could it be normal count number that is just too faint for us to look? - ANS-This may be in the
shape baryonic be counted (product of baryons, i.E. Protons
and neutrons) inside the shape of cool gasoline, faint stars, neutron stars, black holes,
i.E. Massive Compact Halo Objects (MACHOS).
These were searched for and discovered, however no longer almost sufficient to
account for the missing mass.
• Big Bang Cosmology suggests that there couldn't have been this much
matter in baryons (everyday rely composed of protons and neutrons).
• Neutrinos, because they have mass, have interaction most effective through the Weak Force
and
Gravity were proposed, however they must circulate too fast to clump collectively
on the scales of individual galaxies
Dark electricity - ANS-Energy this is causing the expansion of the Universe to accelerate; we
have no
concept what it is!
