Question 1

Iridium is more common in meteorites than in the crust of the Earth.

Accepted Answer

A) True 
 B)False

Question 2

What physical processes have led to the creation of stone and iron meteorites from carbonaceous chondrite asteroids?

Accepted Answer

A)  collision only 
B)  differentiation only 
C)  fragmentation only 
D)  melting only 
E)  melting, differentiation, collision, fragmentation 
A)  collision only 
B)  differentiation only 
C)  fragmentation only 
D)  melting only 
E)  melting, differentiation, collision, fragmentation

Question 3

The iron meteorites

Accepted Answer

A)  never fall on the Earth. 
B)  are only found in the Antarctic. 
C)  are composed of carbonaceous chondrites. 
D)  are responsible for most of the meteor craters on the surface of the moon. 
E)  appear to have formed in the interiors of molten planetesimals. 
A)  never fall on the Earth. 
B)  are only found in the Antarctic. 
C)  are composed of carbonaceous chondrites. 
D)  are responsible for most of the meteor craters on the surface of the moon. 
E)  appear to have formed in the interiors of molten planetesimals.

Question 4

If a large 10-km asteroid or comet struck the Earth in the ocean floor,

Accepted Answer

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

Question 5

No asteroids have orbits that cross the Earth's orbit.

Accepted Answer

A) True 
 B)False

Question 6

Long-period comets are believed to originate in the ____________________.

Accepted Answer

The answer of Long-period comets are believed to originate in...

Question 7

Most meteors come from comets, but most meteorites come from asteroids. Explain this statement.

Accepted Answer

The answer of Most meteors come from comets, but most...

Question 8

Comets falling into the inner solar system from the ____ are called long-period comets.

Accepted Answer

A)  Oort cloud 
B)  asteroid belt 
C)  Roche limit 
D)  Kuiper belt 
E)  Widmanstätten region 
A)  Oort cloud 
B)  asteroid belt 
C)  Roche limit 
D)  Kuiper belt 
E)  Widmanstätten region

Question 9

____ asteroids are the most common and appear to be the source of the most common type of meteorite, the chondrites. They are more common in the inner belt and may be the source of stone meteorites.

Accepted Answer

A)  S-type 
B)  M-type 
C)  C-type 
A)  S-type 
B)  M-type 
C)  C-type

Question 10

What processes cause the difference in appearance between gas tails and dust tails in comets?

Accepted Answer

The answer of What processes cause the difference in appearance...

Question 11

Carbonaceous chondrites I.contain mostly iron and nickel.
II.contain volatiles.
III.contain chondrules.
IV.are similar in composition to the S-type asteroids

Accepted Answer

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

Question 12

Some asteroids show evidence of surface activity such as lava flows.

Accepted Answer

A) True 
 B)False

Question 13

Jupiter was probably influential in preventing the formation of a planet at the present location of the asteroid belt.

Accepted Answer

A) True 
 B)False

Question 14

The ____________________ of a comet can be up to a million kilometers in diameter.

Accepted Answer

The answer of The ____________________ of a comet can be...

Question 15

Stony, chondrite, achondrite, and stony-iron meteorite types are classified according to their

Accepted Answer

A)  orbit. 
B)  distance from the sun. 
C)  impact history. 
D)  mineral content. 
E)  coma. 
A)  orbit. 
B)  distance from the sun. 
C)  impact history. 
D)  mineral content. 
E)  coma.

Question 16

A(n) ____ is a stony meteorite that contains no chondrules and no volatiles. They appear to have been melted after they formed and resemble solidified lavas.

Accepted Answer

A)  carbonaceous chondrite 
B)  achondrite 
C)  breccia 
D)  Widmanstätten 
E)  Kuiper belt object 
A)  carbonaceous chondrite 
B)  achondrite 
C)  breccia 
D)  Widmanstätten 
E)  Kuiper belt object

Question 17

Describe the observational differences between long-period and short-period comets.

Accepted Answer

The answer of Describe the observational differences between long-period and...

Question 18

Widmanstätten patterns are found in ____________________ meteorites.

Accepted Answer

The answer of Widmanstätten patterns are found in ____________________ meteorites....

Question 19

The diagram below is a plot of an asteroid's reflected brightness versus its ultraviolet minus visual color (U-V color; redder to the right and gray to the left). In this diagram, which of the asteroids is most likely an S-type asteroid?

Accepted Answer

A)  Object 1 
B)  Object 2 
C)  Object 3 
D)  Object 4 
E)  Object 5 
A)  Object 1 
B)  Object 2 
C)  Object 3 
D)  Object 4 
E)  Object 5

Question 20

____ asteroids appear to have nickel-iron compositions and may be the cores of broken asteroids.

Accepted Answer

A)  S-type 
B)  M-type 
C)  C-type 
A)  S-type 
B)  M-type 
C)  C-type

Iridium is more common in meteorites than in the crust of the Earth.

What physical processes have led to the creation of stone and iron meteorites from carbonaceous chondrite asteroids?

The iron meteorites

If a large 10-km asteroid or comet struck the Earth in the ocean floor,

No asteroids have orbits that cross the Earth's orbit.

Long-period comets are believed to originate in the ____________________.

Most meteors come from comets, but most meteorites come from asteroids. Explain this statement.

Comets falling into the inner solar system from the ____ are called long-period comets.

____ asteroids are the most common and appear to be the source of the most common type of meteorite, the chondrites. They are more common in the inner belt and may be the source of stone meteorites.

What processes cause the difference in appearance between gas tails and dust tails in comets?

Carbonaceous chondrites I.contain mostly iron and nickel. II.contain volatiles. III.contain chondrules. IV.are similar in composition to the S-type asteroids

Some asteroids show evidence of surface activity such as lava flows.

Jupiter was probably influential in preventing the formation of a planet at the present location of the asteroid belt.

The ____________________ of a comet can be up to a million kilometers in diameter.

Stony, chondrite, achondrite, and stony-iron meteorite types are classified according to their

A(n) ____ is a stony meteorite that contains no chondrules and no volatiles. They appear to have been melted after they formed and resemble solidified lavas.

Describe the observational differences between long-period and short-period comets.

Widmanstätten patterns are found in ____________________ meteorites.

The diagram below is a plot of an asteroid's reflected brightness versus its ultraviolet minus visual color (U-V color; redder to the right and gray to the left). In this diagram, which of the asteroids is most likely an S-type asteroid?

____ asteroids appear to have nickel-iron compositions and may be the cores of broken asteroids.

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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

The Origin of the Solar System

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus and Mars

The Outer Solar System

Astrobiology: Life on Other Worlds

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Exam 19: Meteorites, Asteroids, and Comets

Iridium is more common in meteorites than in the crust of the Earth.

What physical processes have led to the creation of stone and iron meteorites from carbonaceous chondrite asteroids?

The iron meteorites

If a large 10-km asteroid or comet struck the Earth in the ocean floor,

No asteroids have orbits that cross the Earth's orbit.

Long-period comets are believed to originate in the ____________________.

Most meteors come from comets, but most meteorites come from asteroids. Explain this statement.

Comets falling into the inner solar system from the ____ are called long-period comets.

____ asteroids are the most common and appear to be the source of the most common type of meteorite, the chondrites. They are more common in the inner belt and may be the source of stone meteorites.

What processes cause the difference in appearance between gas tails and dust tails in comets?

Carbonaceous chondrites I.contain mostly iron and nickel. II.contain volatiles. III.contain chondrules. IV.are similar in composition to the S-type asteroids

Some asteroids show evidence of surface activity such as lava flows.

Jupiter was probably influential in preventing the formation of a planet at the present location of the asteroid belt.

The ____________________ of a comet can be up to a million kilometers in diameter.

Stony, chondrite, achondrite, and stony-iron meteorite types are classified according to their

A(n) ____ is a stony meteorite that contains no chondrules and no volatiles. They appear to have been melted after they formed and resemble solidified lavas.

Describe the observational differences between long-period and short-period comets.

Widmanstätten patterns are found in ____________________ meteorites.

The diagram below is a plot of an asteroid's reflected brightness versus its ultraviolet minus visual color (U-V color; redder to the right and gray to the left). In this diagram, which of the asteroids is most likely an S-type asteroid?

____ asteroids appear to have nickel-iron compositions and may be the cores of broken asteroids.

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

The Origin of the Solar System

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus and Mars

The Outer Solar System

Astrobiology: Life on Other Worlds

Filters