Question 1

The adding of material an atom at a time is the process of ____________________.

Accepted Answer

The answer of The adding of material an atom at...

Question 2

Compared to the terrestrial planets,Jovian planets

Accepted Answer

A)  have a higher density. 
B)  have a smaller number of moons. 
C)  have a much larger diameter. 
D)  are much hotter. 
A)  have a higher density. 
B)  have a smaller number of moons. 
C)  have a much larger diameter. 
D)  are much hotter.

Question 3

Planets are thought to be forming today in ____ around stars.

Accepted Answer

A)  hot disks 
B)  cold disks 
C)  spherical clouds 
D)  none of the above 
A)  hot disks 
B)  cold disks 
C)  spherical clouds 
D)  none of the above

Question 4

The large planetesimals would have grown faster than the smaller planetesimals because

Accepted Answer

A)  they were moving faster in their orbits than the smaller planetesimals. 
B)  their stronger gravity would pull in more material. 
C)  there was more material located near them that could be accreted. 
D)  the smaller planetesimals were covered by a layer of material that was lost during collisions. 
E)  all of the above 
A)  they were moving faster in their orbits than the smaller planetesimals. 
B)  their stronger gravity would pull in more material. 
C)  there was more material located near them that could be accreted. 
D)  the smaller planetesimals were covered by a layer of material that was lost during collisions. 
E)  all of the above

Question 5

Which observation supports the solar nebula theory of the origin of the solar system?

Accepted Answer

A)  Planets are round. 
B)  The sun is the least massive object in the solar system. 
C)  Disks are common around young stars. 
D)  Disks are rare around young stars. 
A)  Planets are round. 
B)  The sun is the least massive object in the solar system. 
C)  Disks are common around young stars. 
D)  Disks are rare around young stars.

Question 6

Observations in the infrared have detected dusty nebulae around nearby stars such as Vega.

Accepted Answer

A) True 
 B)False

Question 7

Venus is often called Earth's sister planet because it is similar to the Earth in terms of

Accepted Answer

A)  mass. 
B)  size 
C)  density 
D)  All of the above. 
A)  mass. 
B)  size 
C)  density 
D)  All of the above.

Question 8

A future news release might report that a new planet has been found around a star very similar to our sun.This newly discovered planet is claimed to have a mass 40 times that of Earth and is located nearly 25 AU from the star it orbits.Which of the following would be a reasonable prediction about this planet?

Accepted Answer

A)  I and IV 
B)  I,II,& III 
C)  II,III,& IV 
D)  I,II,& IV 
E)  I,II,III,& IV 
A)  I and IV 
B)  I,II,& III 
C)  II,III,& IV 
D)  I,II,& IV 
E)  I,II,III,& IV

Question 9

The discovery that Jovian-like planets are common around other stars and that gas and dust is swept out of the star's neighborhood early after the formation suggests that

Accepted Answer

A)  the Terrestrial planets must form earlier than the Jovian planets. 
B)  all comets are much more massive than the Jovian planets. 
C)  all asteroids had to have formed in planets which then exploded 
D)  the Jovians may have formed directly very quickly,without the core accretion phase. 
E)  the Jovians may have formed directly very very slowly,without the core accretion phase. 
A)  the Terrestrial planets must form earlier than the Jovian planets. 
B)  all comets are much more massive than the Jovian planets. 
C)  all asteroids had to have formed in planets which then exploded 
D)  the Jovians may have formed directly very quickly,without the core accretion phase. 
E)  the Jovians may have formed directly very very slowly,without the core accretion phase.

Question 10

Nearly all extra-solar planets actually found thus far are

Accepted Answer

A)  less massive than earth. 
B)  equal to earth's mass. 
C)  much more massive than earth. 
A)  less massive than earth. 
B)  equal to earth's mass. 
C)  much more massive than earth.

Question 11

The present motions of the planets were inherited from the rotation of the solar nebula.

Accepted Answer

A) True 
 B)False

Question 12

A(n)____________________ theory of the formation of the solar system uses sudden events that drastically alter the form of the early solar system.

Accepted Answer

The answer of A(n)____________________ theory of the formation of the...

Question 13

The age of the solar system is believed to be approximately 4.6 billion years old based on the data from

Accepted Answer

A)  samples of lunar rocks. 
B)  samples of earth rocks. 
C)  samples of meteorites. 
D)  all of the above 
E)  none of the above 
A)  samples of lunar rocks. 
B)  samples of earth rocks. 
C)  samples of meteorites. 
D)  all of the above 
E)  none of the above

Question 14

On a photograph of the moon,the moon measures 30 cm in diameter,and a small crater measures 0.2 cm.The moon's physical diameter is 1738 km.What is the physical diameter of the small crater?

Accepted Answer

A)  about 1738 km 
B)  about 12 km 
C)  about 520 km 
D)  about 350 km 
E)  3.5 km 
A)  about 1738 km 
B)  about 12 km 
C)  about 520 km 
D)  about 350 km 
E)  3.5 km

Question 15

The asteroid belt is found between which two planets?

Accepted Answer

A)  Earth and Mars 
B)  Mars and Jupiter 
C)  Jupiter and Saturn 
D)  Venus and Earth 
A)  Earth and Mars 
B)  Mars and Jupiter 
C)  Jupiter and Saturn 
D)  Venus and Earth

Question 16

A(n)____ is a solar system object that enters Earth's atmosphere and becomes very hot due to friction between the object and Earth's atmosphere.

Accepted Answer

A)  asteroid 
B)  meteor 
C)  comet 
D)  meteoroid 
E)  planetesimal 
A)  asteroid 
B)  meteor 
C)  comet 
D)  meteoroid 
E)  planetesimal

Question 17

How is radioactive dating used to determine the age of an object?

Accepted Answer

A)  The amounts of radioactive and decay material are compared to its half-life to determine age. 
B)  The rate of radioactive decay is measured and compared to models. 
C)  The amount of decay product weighted to determine age. 
D)  The amount of heat generated by radioactive dating is measured to determine age. 
A)  The amounts of radioactive and decay material are compared to its half-life to determine age. 
B)  The rate of radioactive decay is measured and compared to models. 
C)  The amount of decay product weighted to determine age. 
D)  The amount of heat generated by radioactive dating is measured to determine age.

Question 18

Astronomers have observed nebulae similar to our own solar nebula representing formation of .....

Accepted Answer

A)  our solar system 
B)  other solar systems 
C)  Impossible: Our solar system is the only one known and the solar nebula vanished long ago. 
D)  galaxies outside our own galaxy. 
A)  our solar system 
B)  other solar systems 
C)  Impossible: Our solar system is the only one known and the solar nebula vanished long ago. 
D)  galaxies outside our own galaxy.

Question 19

Accretion among the grains in the solar nebula would have been aided by

Accepted Answer

A)  static electricity. 
B)  gravity. 
C)  high-velocity collisions. 
D)  all of the above 
E)  none of the above 
A)  static electricity. 
B)  gravity. 
C)  high-velocity collisions. 
D)  all of the above 
E)  none of the above

Exam 19: The Origin of the Solar System

The adding of material an atom at a time is the process of ____________________.

Compared to the terrestrial planets,Jovian planets

Planets are thought to be forming today in ____ around stars.

The large planetesimals would have grown faster than the smaller planetesimals because

Which observation supports the solar nebula theory of the origin of the solar system?

Observations in the infrared have detected dusty nebulae around nearby stars such as Vega.

Venus is often called Earth's sister planet because it is similar to the Earth in terms of

The discovery that Jovian-like planets are common around other stars and that gas and dust is swept out of the star's neighborhood early after the formation suggests that

Nearly all extra-solar planets actually found thus far are

The present motions of the planets were inherited from the rotation of the solar nebula.

A(n)____________________ theory of the formation of the solar system uses sudden events that drastically alter the form of the early solar system.

The age of the solar system is believed to be approximately 4.6 billion years old based on the data from

On a photograph of the moon,the moon measures 30 cm in diameter,and a small crater measures 0.2 cm.The moon's physical diameter is 1738 km.What is the physical diameter of the small crater?

The asteroid belt is found between which two planets?

A(n)____ is a solar system object that enters Earth's atmosphere and becomes very hot due to friction between the object and Earth's atmosphere.

How is radioactive dating used to determine the age of an object?

Astronomers have observed nebulae similar to our own solar nebula representing formation of .....

Accretion among the grains in the solar nebula would have been aided by

Here and Now

A Users Guide to the Sky

Cycles of the Moon

The Origin of Modern Astronomy

Gravity

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Interstellar Medium

The Formation and Structure of Stars

Stellar Evolution

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies

Active Galaxies and Supermassive Black Holes

Modern Cosmology

Earth: the Standard of Comparative Planetology

The Moon and Mercury: Comparing Airless Worlds

Venus and Mars

Jupiter and Saturn

Uranus,neptune,and the Kuiper Belt

Meteorites,asteroids,and Comets

Astrobiology: Life on Other Worlds

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