EPSI 9 final study guide
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School
University of California, Los Angeles *
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Course
9
Subject
Astronomy
Date
May 4, 2024
Type
Pages
6
Uploaded by MagistrateScience9152
Ep Sci 9 Quizzes -
Quiz 1 -
The main source of heat in our
protoplanetary disk was __________.
- Viscosity in the disk
A parsec is a measure of ______________.
- Parsec
Kepler found that planets travel in elliptical
orbits around the sun and that they sweep
out equal _________ in equal time.
- Area
Looking down on the Earth from the north
pole, the planets of our solar system
generally rotate ____________.
- Counterclockwise
Newton’s law of gravitation is
_______________.
- (GxMxm)/r^2
The Hubble constant tells us that
- The universe is 13 billion years old
Quiz 2 -
204Pb and 206Pb are examples of different
_______________ of the element lead
- Isotopes
Half life is ___________.
- The time it takes for a radioactive nuclide
to decay to half its original abundances.
The first person to establish the age of Earth
and the solar system was ___________.
- Clair Patterson
The solar system is ______ years old.
- 4.6 billion
Quiz 3
The Dawn mission visited _____________.
- The two largest asteroids in the solar
system
The Kuiper belt is ________________.
- Composed of asteroids and comets beyond
the orbit of Neptune
The Oort cloud is _______________.
- A spherical region surrounding the solar
system from which long-period comets
derive
The asteroid Ceres is probably made of
- Carbonaceous chondrite
The first asteroid to be discovered was
______________
- 1 Ceres
The largest of the asteroids in the asteroid
belt is ________________.
- Ceres
Quiz 4
Chondrites are _________.
- Undifferentiated
Highlands on the Moon are made of
________.
- Anorthosite
The Moon formed as a result of _________.
- A massive collision between proto-Earth
and a planetary embryo
The Moon has a __________ spin-orbit
resonance with Earth.
- 1:1
The main asteroid belt lies between the
planets ________.
- Jupiter and Mars
The “Nice” model migration of the giant
planets might explain _______.
- the orbits of Kuiper belt objects
Mid Term Questions:
The main source of heat in our
protoplanetary disk was __________.
-
Viscosity in the disk
A deficit in ________________ in the outer
solar system caused Kuiper to suggest the
existence of a belt of planetesimals beyond
the orbit of Neptune.
-
Surface density
Chondrites are ________________.
-
Undifferentiated
Half life is _________________________.
-
The time it takes for a radioactive
nuclide to decay to half its original
abundances.
Highlands on the Moon are made of
-
Anorthosite
In general, the outer solar system bodies are
icy because
-
the early solar system protoplanetary
disk was colder further away from
the Sun
Kepler found that planets travel in elliptical
orbits around the sun and that they sweep
out equal _________ in equal time.
-
Area
Looking down on the Earth from the north
pole, the planets of our solar system
generally rotate ____________.
-
Counterclockwise
Maria on the Moon are made of
-
Basalt
Most meteorites in our possession today are
___________.
-
Stone
Most of the angular momentum in the solar
system is in _____________.
-
The planets
Newton’s law of gravitation is
_______________.
One astronomical unit is defined as
______________.
-
One earth-sun distance
One of the very best places to find
meteorites is ________________.
-
Antarctica
Our universe is approximately ____ years
old
-
13 billion years
The dawn mission visited
-
The two largest asteroids in the solar
system
The Hubble constant is the slope of the line
on a graph of galactic :
-
Velocity versus distance
The hubble constant tells us that
-
The universe is 13 billion years old
The moon formed as a result of ______
-
Giant impact
The Moon has a __________ spin-orbit
resonance with Earth.
-
1:1
The asteroid Ceres is probably made of
-
Carbonaceous chondrite
The concept of epicycles was put forward by
________________.
-
Ptolemy
The concept of mean-motion resonance
explains
-
Gaps in the asteroid belt
The first asteroid to be discovered was
-
1 ceres .
The first person to establish the age of Earth
and the solar system was
-
Clair patterson
The inner planets are made primarily of
-
Rock
The largest of the asteroids in the asteroid
belt is ________________.
-
Ceres
The main asteroid belt lies between the
planets
-
Jupiter and mars
The primary heat source responsible for
melting planetesimals was _________.
-
26Al radioactive decay
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The protoplanetary disk that made the solar
system was a disk because
-
A balance between gravitational
force and centripetal force acting on
particles near the growing Sun.
The solar system is ___________ years old
-
4.6 billion
The “Nice” model migration of the giant
planets might explain
-
Late heavy bombardment on the
Moon
We know the age of our universe because of
the __________ constant.
-
Hubble constant
_____________ asserted that Earth rotated
on its own axis once daily and traveled
around the Sun once yearly.
-
Copernicus
______________ is credited with first
suggesting that planets move in elliptical
orbits with the Sun as one of the foci.
-
Kepler
Jupiter is about ________ AU from the Sun
-
5
Kepler’s 3rd law relating period, p, to
distance from the sun, r, is _________ when
expressed in AU and Earth years.
-
r^2
Most of the angular momentum in the solar
system is in _____________.
-
The planets
Rock-forming elements are made by
-
Nuclear reactions within stars
Quiz 5
A bright spot in a radar image of Venus
indicates
-
rough topography or high elevations
Coronae on Venus are most likely
-
produced by volcanic activity
followed by collapse
Earth’s ocean basins are composed primarily
of
-
Basalt
Ishtar Terra and Aphrodite Terra are
analgous to __________ on Earth.
-
Continents
Mars takes about _________ to go around
the Sun
-
Two earth years
One sidereal day on Mercury takes
__________Earth days.
-
59
The main difference between our
atmosphere and that of Venus comes about
because
-
CO2 on Earth is locked up in the
form of sedimentary rocks
Quiz 6
Equations of state relate ________for
planetary materials.
-
Mass, radius, and density
Jupiter and Saturn are made primarily of
-
H
Polytropes relate _________ for different
planetary materials.
-
Mass to density and radius
The Great Red spot is a ____________ on
Jupiter
-
Storm
Belts on Jupiter are
-
Warm, red low-altitude clouds
The deep parts of the gas giant planets are
composed of
-
Metallic H liquid
The diamond anvil cell is used to learn about
-
the nature of materials at great
depths within planets
The k values for angular momentum tell us
about
-
The distribution of mass in a
spherical body
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