Exam 15: Origin of the Solar System and Extrasolar Planets

The diagram below illustrates the radioactive decay of potassium (⁴⁰K), which has a half-life of 1.3 billion years. If a lunar rock is found that currently contains 5 grams of ⁴⁰K, and it is determined that the sample contained 20 grams when it was formed, how old is the lunar rock?

(Multiple Choice)

4.9/5

(74)

Question 21

Violent impacts of infalling particles release energy called ____________.

(Short Answer)

4.7/5

(65)

Question 22

____________ is the separation of material in a newly formed planet or asteroid according to density. This happens when the object becomes molten.

(Multiple Choice)

4.9/5

(68)

Question 23

Jovian worlds that orbit close to their host stars are called ____________.

(Short Answer)

4.8/5

(83)

Question 24

The most important effect in clearing the solar nebula of gas and dust was

(Multiple Choice)

4.9/5

(83)

Question 25

The uncompressed density of a planet in our solar system

(Multiple Choice)

4.9/5

(75)

Question 26

In the above cartoon, the interior of a planet has separated into the layers shown by a process known as ___________.

(Multiple Choice)

4.9/5

(79)

Question 27

The most massive and densest planets are the terrestrials.

(True/False)

4.9/5

(72)

Question 28

Describe some characteristics that the terrestrial planets have in common. Use the solar nebula theory to explain the commonality.

(Essay)

4.8/5

(82)

Question 29

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

(Multiple Choice)

4.8/5

(80)

Question 30

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

(Multiple Choice)

4.8/5

(82)

Question 31

A planet found orbiting a star other than the Sun is called a(n) ____________.

(Short Answer)

5.0/5

(91)

Question 32

A planet is much brighter than the star it orbits.

(True/False)

4.8/5

(72)

Question 33

If the terrestrial planets were formed by homogeneous accretion, then

(Multiple Choice)

4.9/5

(82)

Question 34

Using the graph shown above, find out how many half-lives does it take for 3/4 of the daughter products to form.

(Multiple Choice)

4.8/5

(73)

Question 35

Debris disks are cold dust disks around main-sequence stars that are produced by collisions among planetesimals.

(True/False)

4.8/5

(93)

Question 36

The hydrogen and helium in our solar system were created from subatomic particles about ____________ years ago.

(Multiple Choice)

4.7/5

(81)

Question 37

Asteroids are an example of planetesimals.

(True/False)

4.9/5

(90)

Question 38

Outgassing refers to the formation of an atmosphere by the attraction of gases from the surrounding nebula.

(True/False)

4.8/5

(91)

Question 39

Part of the current atmosphere of Earth is believed to be

(Multiple Choice)

4.7/5

(94)

Question 40

Showing 21 - 40 of 104

The diagram below illustrates the radioactive decay of potassium (⁴⁰K), which has a half-life of 1.3 billion years. If a lunar rock is found that currently contains 5 grams of ⁴⁰K, and it is determined that the sample contained 20 grams when it was formed, how old is the lunar rock?

Violent impacts of infalling particles release energy called ____________.

____________ is the separation of material in a newly formed planet or asteroid according to density. This happens when the object becomes molten.

Jovian worlds that orbit close to their host stars are called ____________.

The most important effect in clearing the solar nebula of gas and dust was

The uncompressed density of a planet in our solar system

In the above cartoon, the interior of a planet has separated into the layers shown by a process known as ___________.

The most massive and densest planets are the terrestrials.

Describe some characteristics that the terrestrial planets have in common. Use the solar nebula theory to explain the commonality.

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

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

A planet found orbiting a star other than the Sun is called a(n) ____________.

A planet is much brighter than the star it orbits.

If the terrestrial planets were formed by homogeneous accretion, then

Using the graph shown above, find out how many half-lives does it take for 3/4 of the daughter products to form.

Debris disks are cold dust disks around main-sequence stars that are produced by collisions among planetesimals.

The hydrogen and helium in our solar system were created from subatomic particles about ____________ years ago.

Asteroids are an example of planetesimals.

Outgassing refers to the formation of an atmosphere by the attraction of gases from the surrounding nebula.

Part of the current atmosphere of Earth is believed to be

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Formation and Structure of Stars

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies: Normal and Active

Modern Cosmology

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus, and Mars

The Outer Solar System

Meteorites, Asteroids, and Comets

Astrobiology: Life on Other Worlds

Filters

Exam 15: Origin of the Solar System and Extrasolar Planets

The diagram below illustrates the radioactive decay of potassium (40K), which has a half-life of 1.3 billion years. If a lunar rock is found that currently contains 5 grams of 40K, and it is determined that the sample contained 20 grams when it was formed, how old is the lunar rock? ​ ​

Violent impacts of infalling particles release energy called ____________.

____________ is the separation of material in a newly formed planet or asteroid according to density. This happens when the object becomes molten.

Jovian worlds that orbit close to their host stars are called ____________.

The most important effect in clearing the solar nebula of gas and dust was

The uncompressed density of a planet in our solar system

In the above cartoon, the interior of a planet has separated into the layers shown by a process known as ___________.

The most massive and densest planets are the terrestrials.

Describe some characteristics that the terrestrial planets have in common. Use the solar nebula theory to explain the commonality.

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

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

A planet found orbiting a star other than the Sun is called a(n) ____________.

A planet is much brighter than the star it orbits.

If the terrestrial planets were formed by homogeneous accretion, then

Using the graph shown above, find out how many half-lives does it take for 3/4 of the daughter products to form.

Debris disks are cold dust disks around main-sequence stars that are produced by collisions among planetesimals.

The hydrogen and helium in our solar system were created from subatomic particles about ____________ years ago.

Asteroids are an example of planetesimals.

Outgassing refers to the formation of an atmosphere by the attraction of gases from the surrounding nebula.

Part of the current atmosphere of Earth is believed to be

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Formation and Structure of Stars

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies: Normal and Active

Modern Cosmology

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus, and Mars

The Outer Solar System

Meteorites, Asteroids, and Comets

Astrobiology: Life on Other Worlds

Filters

The diagram below illustrates the radioactive decay of potassium (⁴⁰K), which has a half-life of 1.3 billion years. If a lunar rock is found that currently contains 5 grams of ⁴⁰K, and it is determined that the sample contained 20 grams when it was formed, how old is the lunar rock?