Question 1

A chondrite is a meteor that has

Accepted Answer

A)  never been heated. 
B)  been heated but never very hot. 
C)  been heated to a high temperature. 
D)  been melted. 
E)  entered Earth's atmosphere but will be destroyed before reaching the ground. 
A)  never been heated. 
B)  been heated but never very hot. 
C)  been heated to a high temperature. 
D)  been melted. 
E)  entered Earth's atmosphere but will be destroyed before reaching the ground. B

Question 2

The ____ is a disk-shaped cloud of icy bodies believed to extend from about 40 AU out to 100 AU.It is believed that 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 E

Question 3

The largest object orbiting between Mars and Jupiter is _______which is _________..

Accepted Answer

A)  Ceres; an asteroid 
B)  Ceres; a dwarf planet 
C)  Pluto; an asteroid 
D)  Pluto; a dwarf planet 
A)  Ceres; an asteroid 
B)  Ceres; a dwarf planet 
C)  Pluto; an asteroid 
D)  Pluto; a dwarf planet B

Question 4

The fact that more iron meteorites are found than any other kind is a selection effect.

Accepted Answer

A) True 
 B)False

Question 5

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 6

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 7

The iron meteorites

Accepted Answer

A)  represent the largest number of falls. 
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 from the interiors of molten objects of planetesimal size. 
A)  represent the largest number of falls. 
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 from the interiors of molten objects of planetesimal size.

Question 8

The Tunguska impact in 1908 in Russia left behind

Accepted Answer

A)  a giant crater. 
B)  extinction of many life forms. 
C)  no crater. 
A)  a giant crater. 
B)  extinction of many life forms. 
C)  no crater.

Question 9

Comet Hyakutake 1995 B2 was observed on the night of March 25,1996,with a tail that extended 20$\degree$.At this time the comet was 0.10 AU from Earth.What is the minimum length of the tail in AU? [This question requires the use of mathematics.]

Accepted Answer

A)  0.1 AU 
B)  0.005 AU 
C)  1.1 AU 
D)  20 AU 
E)  0.03 AU 
A)  0.1 AU 
B)  0.005 AU 
C)  1.1 AU 
D)  20 AU 
E)  0.03 AU

Question 10

The Allende meteorite is important because

Accepted Answer

A)  it is the largest iron meteorite ever found. 
B)  its composition suggests that it is very old and unchanged from when it formed. 
C)  it is the object that produced the Tunguska event. 
D)  it contains the most well defined Widmanstätten patterns ever found. 
E)  it is the only meteorite to ever strike and kill a person. 
A)  it is the largest iron meteorite ever found. 
B)  its composition suggests that it is very old and unchanged from when it formed. 
C)  it is the object that produced the Tunguska event. 
D)  it contains the most well defined Widmanstätten patterns ever found. 
E)  it is the only meteorite to ever strike and kill a person.

Question 11

An asteroid could produce an iron core and a silicate mantle if it

Accepted Answer

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

Question 12

A bit of matter that enters Earth's atmosphere and survives to reach the ground is called

Accepted Answer

A)  a meteor. 
B)  a dwarf planet 
C)  a meteorite. 
D)  a minor planet. 
E)  an asteroid. 
A)  a meteor. 
B)  a dwarf planet 
C)  a meteorite. 
D)  a minor planet. 
E)  an asteroid.

Question 13

The diagram below is a plot of an object's albedo versus its ultraviolet minus visual color (U - V color).In this diagram,which of the asteroids would be most reflective?

Accepted Answer

A)  Object A 
B)  Object B 
C)  Object C 
D)  Object D 
E)  Object E 
A)  Object A 
B)  Object B 
C)  Object C 
D)  Object D 
E)  Object E

Question 14

The existence of the Oort cloud cannot be confirmed observationally from Earth because the objects are too small.

Accepted Answer

A) True 
 B)False

Question 15

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

Accepted Answer

A) True 
 B)False

Question 16

Asteroids are discovered by their

Accepted Answer

A)  great gravitational effect on Mars' orbit 
B)  great gravitational effect on Jupiter's orbit 
C)  orbital motion around the planet Venus in photographs 
D)  orbital motion among the stars in successive images 
A)  great gravitational effect on Mars' orbit 
B)  great gravitational effect on Jupiter's orbit 
C)  orbital motion around the planet Venus in photographs 
D)  orbital motion among the stars in successive images

Question 17

A large iron asteroid striking the earth can create a(n)

Accepted Answer

A)  large crater. 
B)  ice cap. 
C)  large ocean. 
D)  Wrong.There will be no effects. 
A)  large crater. 
B)  ice cap. 
C)  large ocean. 
D)  Wrong.There will be no effects.

Question 18

One important way a major impact on Earth is thought to have triggered extinction of many species is because

Accepted Answer

A)  the fragments hit animals on their heads,killing them. 
B)  the Earth's moon was thrown out of its orbit. 
C)  of changes to the world-wide climate. 
D)  Wrong! Major impacts are not thought to have triggered extinctions. 
A)  the fragments hit animals on their heads,killing them. 
B)  the Earth's moon was thrown out of its orbit. 
C)  of changes to the world-wide climate. 
D)  Wrong! Major impacts are not thought to have triggered extinctions.

Question 19

Meteors strike the Earth's atmosphere every day.

Accepted Answer

A) True 
 B)False

Question 20

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

Accepted Answer

A) True 
 B)False

Exam 25: Meteorites,asteroids,and Comets

A chondrite is a meteor that has

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

The largest object orbiting between Mars and Jupiter is _______which is _________..

The fact that more iron meteorites are found than any other kind is a selection effect.

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

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

The iron meteorites

The Tunguska impact in 1908 in Russia left behind

Comet Hyakutake 1995 B2 was observed on the night of March 25,1996,with a tail that extended 20 °\degree° .At this time the comet was 0.10 AU from Earth.What is the minimum length of the tail in AU? [This question requires the use of mathematics.]

The Allende meteorite is important because

An asteroid could produce an iron core and a silicate mantle if it

A bit of matter that enters Earth's atmosphere and survives to reach the ground is called

The diagram below is a plot of an object's albedo versus its ultraviolet minus visual color (U - V color).In this diagram,which of the asteroids would be most reflective?

The existence of the Oort cloud cannot be confirmed observationally from Earth because the objects are too small.

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

Asteroids are discovered by their

A large iron asteroid striking the earth can create a(n)

One important way a major impact on Earth is thought to have triggered extinction of many species is because

Meteors strike the Earth's atmosphere every day.

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

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

The Origin of the Solar System

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

Astrobiology: Life on Other Worlds

Filters

The largest object orbiting between Mars and Jupiter is _which is ___..

Comet Hyakutake 1995 B2 was observed on the night of March 25,1996,with a tail that extended 20 $\degree$ .At this time the comet was 0.10 AU from Earth.What is the minimum length of the tail in AU? [This question requires the use of mathematics.]