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

pdf

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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