Question 1

Explain the steps involved in clearing a nebular of its interstellar material that stopped planetary formation.

Accepted Answer

The most important of these internal pro

Question 2

Which is the correct order of planetary object class during their formation?

Accepted Answer

A)  planetesimals, protoplanets, and planets 
B)  planets, planetesimals, and protoplanets 
C)  planetesimals, planets, and planetettes 
D)  protoplanets, planetesimals, and planets 
E)  planetesimals, planetettes, and planets 
A)  planetesimals, protoplanets, and planets 
B)  planets, planetesimals, and protoplanets 
C)  planetesimals, planets, and planetettes 
D)  protoplanets, planetesimals, and planets 
E)  planetesimals, planetettes, and planets

Question 3

What are the small bits of rock and metal that collide with Earth's atmosphere?

Accepted Answer

A)  meteors 
B)  comets 
C)  asteroids 
D)  meteorites 
E)  meteoroids 
A)  meteors 
B)  comets 
C)  asteroids 
D)  meteorites 
E)  meteoroids

Question 4

The most important source for determining the age of the Solar System is by sampling a planet's core.

Accepted Answer

A) True 
 B)False

Question 5

Kuiper belt objects are small, rocky bodies orbiting beyond Mars.

Accepted Answer

A) True 
 B)False

Question 6

According to solar nebula theory, what is the first step in planetesimal formation?

Accepted Answer

A)  heating 
B)  flattening 
C)  accretion 
D)  condensation 
E)  gravitational collapse 
A)  heating 
B)  flattening 
C)  accretion 
D)  condensation 
E)  gravitational collapse

Question 7

What astronomical object is the most important source for determining the age of our Solar System?

Accepted Answer

A)  lunar rocks 
B)  Earth core samples 
C)  meteorites 
D)  meteors 
E)  asteroids 
A)  lunar rocks 
B)  Earth core samples 
C)  meteorites 
D)  meteors 
E)  asteroids

Question 8

Why do Terrestrial planets not have rings?

Accepted Answer

A)  Terrestrial planets rotate in the opposite direction of the Sun. 
B)  Terrestrial planets do not have large enough masses to retain particles in rings. 
C)  Terrestrial planets have a core too rich in heavy metals to retain rings. 
D)  Terrestrial planets are too close to the Sun to support a ring system. 
E)  Terrestrial planets are not gaseous bodies. 
A)  Terrestrial planets rotate in the opposite direction of the Sun. 
B)  Terrestrial planets do not have large enough masses to retain particles in rings. 
C)  Terrestrial planets have a core too rich in heavy metals to retain rings. 
D)  Terrestrial planets are too close to the Sun to support a ring system. 
E)  Terrestrial planets are not gaseous bodies.

Question 9

Which space observatory uses the transit method to detect extrasolar planets?

Accepted Answer

A)  Hubble 
B)  Kepler 
C)  Spitzer 
D)  Chandra 
E)  Voyager 
A)  Hubble 
B)  Kepler 
C)  Spitzer 
D)  Chandra 
E)  Voyager

Question 10

Which hypothesis was out-ruled by the solar nebular theory?

Accepted Answer

A)  planet accretion hypothesis 
B)  imploding cloud hypothesis 
C)  passing star hypothesis 
D)  condensation hypothesis 
E)  catastrophic hypothesis 
A)  planet accretion hypothesis 
B)  imploding cloud hypothesis 
C)  passing star hypothesis 
D)  condensation hypothesis 
E)  catastrophic hypothesis

Question 11

Descartes' hypothesis of solar system formation was problematic because he did not understand the ____.

Accepted Answer

A)  involvement of condensation 
B)  involvement of contraction 
C)  difference in the planets 
D)  involvement of gravity 
E)  gaseous properties of the Sun 
A)  involvement of condensation 
B)  involvement of contraction 
C)  difference in the planets 
D)  involvement of gravity 
E)  gaseous properties of the Sun

Question 12

Asteroids are believed to be debris left over from the failure of a planet to form at a distance of about 3 AU from the Sun.

Accepted Answer

A) True 
 B)False

Question 13

The passing star hypothesis suggests that planets form in the rotating disks of gas and dust around young stars.

Accepted Answer

A) True 
 B)False

Question 14

The _______________ of a radioactive substance is the time it takes for half of the parent isotope atoms to decay into daughter isotope atoms.

Accepted Answer

The answer of The _______________ of a radioactive substance is...

Question 15

Match between columns
                        Premises: small, irregular icy bodies found orbiting beyond Neptune
the inner four rocky planets of our Solar System
piece of dust or tiny rock burning in a planet's atmosphere
extrasolar Jovian worlds that have been found orbiting close to their parent stars
planets orbiting stars outside of our Solar System
the outer four gaseous planets of our Solar system
icy bodies with "tails" on a extreme elliptical orbit
small, irregular rocky bodies mostly found between Mars and Jupiter
coalescing planetesimals that eventually become planets
solid bits of matter that will eventually be made into protoplanets

Accepted Answer

The Answer of meteor and Kuiper belt objects and Planetesimals is...

Question 16

During Solar System formation, solid particles contracted from the gas of the nebula as it cooled.

Accepted Answer

A) True 
 B)False

Question 17

The first extrasolar planets discovered are small and have long orbital periods.

Accepted Answer

A) True 
 B)False

Question 18

During the growth of planetesimals to protoplanets, could the planetesimals have collided into one another? Why or why not?

Accepted Answer

If planetesimals had collided at orbital

Question 19

Once a protoplanet reached a large mass, what is the next step for it to formally grow into a planet?

Accepted Answer

A)  gravitational collapse 
B)  expanding 
C)  accretion 
D)  condensation 
E)  slowing momentum 
A)  gravitational collapse 
B)  expanding 
C)  accretion 
D)  condensation 
E)  slowing momentum

Question 20

Which term is described as small, icy bodies that orbit the Sun just beyond Neptune?

Accepted Answer

A)  Kuiper belt objects 
B)  asteroid belt objects 
C)  Oort cloud objects 
D)  Jovian belt objects 
E)  Neptunian belt objects 
A)  Kuiper belt objects 
B)  asteroid belt objects 
C)  Oort cloud objects 
D)  Jovian belt objects 
E)  Neptunian belt objects

Exam 19: Origin of the Solar System and Extrasolar Planets

Explain the steps involved in clearing a nebular of its interstellar material that stopped planetary formation.

Which is the correct order of planetary object class during their formation?

What are the small bits of rock and metal that collide with Earth's atmosphere?

The most important source for determining the age of the Solar System is by sampling a planet's core.

Kuiper belt objects are small, rocky bodies orbiting beyond Mars.

According to solar nebula theory, what is the first step in planetesimal formation?

What astronomical object is the most important source for determining the age of our Solar System?

Why do Terrestrial planets not have rings?

Which space observatory uses the transit method to detect extrasolar planets?

Which hypothesis was out-ruled by the solar nebular theory?

Descartes' hypothesis of solar system formation was problematic because he did not understand the ____.

Asteroids are believed to be debris left over from the failure of a planet to form at a distance of about 3 AU from the Sun.

The passing star hypothesis suggests that planets form in the rotating disks of gas and dust around young stars.

The _______________ of a radioactive substance is the time it takes for half of the parent isotope atoms to decay into daughter isotope atoms.

During Solar System formation, solid particles contracted from the gas of the nebula as it cooled.

The first extrasolar planets discovered are small and have long orbital periods.

During the growth of planetesimals to protoplanets, could the planetesimals have collided into one another? Why or why not?

Once a protoplanet reached a large mass, what is the next step for it to formally grow into a planet?

Which term is described as small, icy bodies that orbit the Sun just beyond Neptune?

Here and Now

A Users Guide to the Sky

Moon Phases and Eclipses

Origins of Modern Astronomy

Gravity

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Interstellar Medium

Formation and Structure of Stars

Stellar Evolution

Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies

Supermassive Black Holes and Active Galaxies

Modern Cosmology

Earth the Active Planet

The Moon and Mercury

Venus and Mars

Jupiter and Saturn

Uranus Neptune Pluto and the Kuiper Belt

Meteorites Asteroids and Comets

Astrobiology

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