Question 1

The meteors in meteor showers are believed to be the debris left behind in comet orbits.

Accepted Answer

A) True 
 B)False

Question 2

After formation, a carbonaceous chondrite asteroid could produce an iron core and a rocky silicate mantle if it melted then

Accepted Answer

A)  differentiated. 
B)  outgassed. 
C)  condensed. 
D)  accreted. 
E)  sublimed. 
A)  differentiated. 
B)  outgassed. 
C)  condensed. 
D)  accreted. 
E)  sublimed.

Question 3

The majority of meteorite finds are iron meteorites.

Accepted Answer

A) True 
 B)False

Question 4

Meteorites seem to be primarily composed of material very similar to the material in comets.

Accepted Answer

A) True 
 B)False

Question 5

One currently accepted theory suggests that the bodies in the Oort cloud formed

Accepted Answer

A)  near the present orbits of the terrestrial planets and were then ejected by them. 
B)  near the present orbits of the Jovian planets and were then ejected by them. 
C)  right there in the Oort cloud very far from the sun. 
A)  near the present orbits of the terrestrial planets and were then ejected by them. 
B)  near the present orbits of the Jovian planets and were then ejected by them. 
C)  right there in the Oort cloud very far from the sun.

Question 6

The gas tail of a comet always

Accepted Answer

A)  trails behind the head along the orbital path. 
B)  extends ahead of the head along the orbital path. 
C)  points toward the sun. 
D)  points away from the sun. 
E)  points perpendicular to the orbital path. 
A)  trails behind the head along the orbital path. 
B)  extends ahead of the head along the orbital path. 
C)  points toward the sun. 
D)  points away from the sun. 
E)  points perpendicular to the orbital path.

Question 7

Which of the following is evidence for the connection between comets and meteor showers?

Accepted Answer

A)  Meteor and comets have the same appearance in the sky. 
B)  Meteor showers always occur when a comet is visible. 
C)  Meteor showers always occur 6 months after a comet passes Earth. 
D)  Meteor showers are an annual event. Many of these are known to be when the Earth crosses a comet's orbit. 
A)  Meteor and comets have the same appearance in the sky. 
B)  Meteor showers always occur when a comet is visible. 
C)  Meteor showers always occur 6 months after a comet passes Earth. 
D)  Meteor showers are an annual event. Many of these are known to be when the Earth crosses a comet's orbit.

Question 8

Most of the asteroids orbit the sun in a belt between the orbits of

Accepted Answer

A)  Venus and Earth. 
B)  Earth and Mars. 
C)  Jupiter and Saturn. 
D)  Mercury and Venus. 
E)  Mars and Jupiter. 
A)  Venus and Earth. 
B)  Earth and Mars. 
C)  Jupiter and Saturn. 
D)  Mercury and Venus. 
E)  Mars and Jupiter.

Question 9

The ____ is a disk-shaped cloud of icy bodies believed to extend from about 40 AU (the orbit of Pluto) out to 100 AU. It is believed that most short-period comets originate from this region.

Accepted Answer

A)  Oort cloud 
B)  Widmanstätten cloud 
C)  Apollo-Amor 
D)  Kirkwood region 
E)  Kuiper belt 
A)  Oort cloud 
B)  Widmanstätten cloud 
C)  Apollo-Amor 
D)  Kirkwood region 
E)  Kuiper belt

Question 10

What evidence exists that some of the asteroids were geologically active in the distant past?

Accepted Answer

A)  A few of the larger asteroids show similar reflectance spectra (colors) similar to achondrite stony lava-like meteorites. 
B)  A few of the larger asteroids show similar reflectance spectra (colors) similar to carbonaceous chondrite meteorites. 
C)  A few of the larger asteroids show similar reflectance spectra (colors) similar to Jovian planets . 
A)  A few of the larger asteroids show similar reflectance spectra (colors) similar to achondrite stony lava-like meteorites. 
B)  A few of the larger asteroids show similar reflectance spectra (colors) similar to carbonaceous chondrite meteorites. 
C)  A few of the larger asteroids show similar reflectance spectra (colors) similar to Jovian planets .

Question 11

How does the dirty snowball theory explain the observed characteristics of comets?

Accepted Answer

The dirty snowball theory, proposed by a

Question 12

What characteristic of long-period comets suggest they come directly from the Oort cloud?

Accepted Answer

A)  They have longer dust tails than short-period comets. 
B)  Their orbits have random inclinations with respect to the ecliptic plane. 
C)  Their orbits are nearly circular. 
D)  They tend to appear larger in diameter than short-period comets. 
A)  They have longer dust tails than short-period comets. 
B)  Their orbits have random inclinations with respect to the ecliptic plane. 
C)  Their orbits are nearly circular. 
D)  They tend to appear larger in diameter than short-period comets.

Question 13

____ asteroids are more common in the outer asteroid belt where it is cooler. They are darker and may be carbonaceous.

Accepted Answer

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

Question 14

How might we explain the origin of the different types of meteorites among the asteroids?

Accepted Answer

The answer of How might we explain the origin of...

Question 15

What does the presence of the Widmanstätten patterns in iron meteorites tell us about their history?

Accepted Answer

The answer of What does the presence of the Widmanstätten...

Question 16

The impact of a large asteroid comet with Earth has been proposed to have caused the extinction of the dinosaurs. The impact site of this comet is in or near

Accepted Answer

A)  Iowa. 
B)  Hudson Bay. 
C)  Crater Lake, Oregon. 
D)  Canberra, Australia. 
E)  Chicxulub, Mexico. 
A)  Iowa. 
B)  Hudson Bay. 
C)  Crater Lake, Oregon. 
D)  Canberra, Australia. 
E)  Chicxulub, Mexico.

Question 17

Carbonaceous chondrites have been heated to high temperature at least once since they formed.

Accepted Answer

A) True 
 B)False

Question 18

A(n) ____________________ occurs when a bit of material enters Earth's atmosphere and becomes incandescent due to friction with the atmosphere.

Accepted Answer

The answer of A(n) ____________________ occurs when a bit of...

Question 19

Meteorites seem to be primarily composed of material very similar to the material in asteroids.

Accepted Answer

A) True 
 B)False

Question 20

The ____________________-type asteroids are generally found in the outer portion of the asteroid belt and are very dark.

Accepted Answer

The answer of The ____________________-type asteroids are generally found in...

The meteors in meteor showers are believed to be the debris left behind in comet orbits.

After formation, a carbonaceous chondrite asteroid could produce an iron core and a rocky silicate mantle if it melted then

The majority of meteorite finds are iron meteorites.

Meteorites seem to be primarily composed of material very similar to the material in comets.

One currently accepted theory suggests that the bodies in the Oort cloud formed

The gas tail of a comet always

Which of the following is evidence for the connection between comets and meteor showers?

Most of the asteroids orbit the sun in a belt between the orbits of

The ____ is a disk-shaped cloud of icy bodies believed to extend from about 40 AU (the orbit of Pluto) out to 100 AU. It is believed that most short-period comets originate from this region.

What evidence exists that some of the asteroids were geologically active in the distant past?

How does the dirty snowball theory explain the observed characteristics of comets?

What characteristic of long-period comets suggest they come directly from the Oort cloud?

____ asteroids are more common in the outer asteroid belt where it is cooler. They are darker and may be carbonaceous.

How might we explain the origin of the different types of meteorites among the asteroids?

What does the presence of the Widmanstätten patterns in iron meteorites tell us about their history?

The impact of a large asteroid comet with Earth has been proposed to have caused the extinction of the dinosaurs. The impact site of this comet is in or near

Carbonaceous chondrites have been heated to high temperature at least once since they formed.

A(n) ____________________ occurs when a bit of material enters Earth's atmosphere and becomes incandescent due to friction with the atmosphere.

Meteorites seem to be primarily composed of material very similar to the material in asteroids.

The ____________________-type asteroids are generally found in the outer portion of the asteroid belt and are very dark.

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

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Exam 19: Meteorites, Asteroids, and Comets

The meteors in meteor showers are believed to be the debris left behind in comet orbits.

After formation, a carbonaceous chondrite asteroid could produce an iron core and a rocky silicate mantle if it melted then

The majority of meteorite finds are iron meteorites.

Meteorites seem to be primarily composed of material very similar to the material in comets.

One currently accepted theory suggests that the bodies in the Oort cloud formed

The gas tail of a comet always

Which of the following is evidence for the connection between comets and meteor showers?

Most of the asteroids orbit the sun in a belt between the orbits of

The ____ is a disk-shaped cloud of icy bodies believed to extend from about 40 AU (the orbit of Pluto) out to 100 AU. It is believed that most short-period comets originate from this region.

What evidence exists that some of the asteroids were geologically active in the distant past?

How does the dirty snowball theory explain the observed characteristics of comets?

What characteristic of long-period comets suggest they come directly from the Oort cloud?

____ asteroids are more common in the outer asteroid belt where it is cooler. They are darker and may be carbonaceous.

How might we explain the origin of the different types of meteorites among the asteroids?

What does the presence of the Widmanstätten patterns in iron meteorites tell us about their history?

The impact of a large asteroid comet with Earth has been proposed to have caused the extinction of the dinosaurs. The impact site of this comet is in or near

Carbonaceous chondrites have been heated to high temperature at least once since they formed.

A(n) ____________________ occurs when a bit of material enters Earth's atmosphere and becomes incandescent due to friction with the atmosphere.

Meteorites seem to be primarily composed of material very similar to the material in asteroids.

The ____________________-type asteroids are generally found in the outer portion of the asteroid belt and are very dark.

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