Question 1

The ____ of a comet is a lump of fragile, porous material containing ices of water, carbon dioxide, and ammonia.

Accepted Answer

A)  nucleus 
B)  coma 
C)  dust tail 
D)  gas tail 
E)  chondrule 
A)  nucleus 
B)  coma 
C)  dust tail 
D)  gas tail 
E)  chondrule

Question 2

Match between columns
                        Premises: impact crater likely the evidence for the extinction of dinosaurs
objects with orbits between, or crossing, orbits of the Jovian planets
planetary objects caught in Jupiter's Lagrange points
asteroids with orbits that carry them into the inner Solar System
sections of asteroid belt orbits that are nearly preoccupied caused by orbital resonances with Jupiter
stony meteorites lacking chondrules and volatiles
chondrites rich in water, other volatiles and organic compounds
chondrites with calcium-aluminum-rich inclusions
the head of a comet
a spherical cloud of icy bodies extending 10,000 to 100,000 AU from the Sun

Accepted Answer

The Answer of Chicxulub and Kirkwood gaps and Oort cloud is...

Question 3

Which type of asteroid is classified as rocky, bright, and reddish?

Accepted Answer

A)  C-type 
B)  F-type 
C)  M-type 
D)  S-type 
E)  V-type 
A)  C-type 
B)  F-type 
C)  M-type 
D)  S-type 
E)  V-type

Question 4

A ____ is produced by ionized gas carried away from the comet by solar wind.

Accepted Answer

A)  nucleus 
B)  coma 
C)  dust tail 
D)  gas tail 
E)  chondrule 
A)  nucleus 
B)  coma 
C)  dust tail 
D)  gas tail 
E)  chondrule

Question 5

Why is it easier to find an iron meteorite on the ground that it is to witness one fall?

Accepted Answer

Iron meteorites make up 66 percent of fi

Question 6

Nonbelt asteroids can become trapped in the _______________ along Jupiter's orbit.

Accepted Answer

The answer of Nonbelt asteroids can become trapped in the...

Question 7

Comets are solid objects.

Accepted Answer

A) True 
 B)False

Question 8

Some astronomers speculate there are as many Trojan asteroids around Jupiter as asteroids in the asteroid belt.

Accepted Answer

A) True 
 B)False

Question 9

Only about three comets per year plunge into the Sun and are destroyed.

Accepted Answer

A) True 
 B)False

Question 10

Comet dust particles that later encounter Earth are seen as meteors.

Accepted Answer

A) True 
 B)False

Question 11

What do we learn by studying chondrites?

Accepted Answer

A)  Earth's early composition 
B)  the history of comets from the Oort cloud 
C)  the different formations of the Terrestrial and Jovian planets 
D)  the steps in planetary differentiation 
E)  the conditions and processes from the early days of the solar nebula 
A)  Earth's early composition 
B)  the history of comets from the Oort cloud 
C)  the different formations of the Terrestrial and Jovian planets 
D)  the steps in planetary differentiation 
E)  the conditions and processes from the early days of the solar nebula

Question 12

About how far is the Oort cloud from the Sun?

Accepted Answer

A)  3 to 5 AU 
B)  45 to 60 AU 
C)  100 to 1000 AU 
D)  10,000 to 100,000 AU 
E)  4.6 billion AU 
A)  3 to 5 AU 
B)  45 to 60 AU 
C)  100 to 1000 AU 
D)  10,000 to 100,000 AU 
E)  4.6 billion AU

Question 13

The best place to search for meteorites on Earth is in parts of _______________.

Accepted Answer

Antarctica

Question 14

Why don't short-period comets have randomly oriented orbits?

Accepted Answer

A)  Their orbits have been altered by encounters with planets. 
B)  Their orbits are altered by the Sun's gravitational pull. 
C)  Their orbits have been altered by impacts from asteroids. 
D)  Their orbits have been altered by the Lagrange points of Jupiter. 
E)  Their orbits have been altered by solar wind particles from a CME. 
A)  Their orbits have been altered by encounters with planets. 
B)  Their orbits are altered by the Sun's gravitational pull. 
C)  Their orbits have been altered by impacts from asteroids. 
D)  Their orbits have been altered by the Lagrange points of Jupiter. 
E)  Their orbits have been altered by solar wind particles from a CME.

Question 15

What space mission has collected data on Vesta, with its next destination to be Ceres?

Accepted Answer

A)  New Horizons 
B)  HST 
C)  SOHO 
D)  Dawn 
E)  Deep Impact 
A)  New Horizons 
B)  HST 
C)  SOHO 
D)  Dawn 
E)  Deep Impact

Question 16

Earth is hit about once a week by meter-size asteroids.

Accepted Answer

A) True 
 B)False

Question 17

A Trojan asteroid is caught within the Lagrange points of which planet?

Accepted Answer

A)  Venus 
B)  Earth 
C)  Mars 
D)  Jupiter 
E)  Neptune 
A)  Venus 
B)  Earth 
C)  Mars 
D)  Jupiter 
E)  Neptune

Question 18

Most asteroids are very regular in shape with bright surfaces.

Accepted Answer

A) True 
 B)False

Question 19

Which statement is true about asteroids?

Accepted Answer

A)  All asteroids are found in the asteroid belt between Mars and Jupiter. 
B)  Asteroids are also called dwarf planets. 
C)  Asteroids have an irregular shape and are battered by impact cratering. 
D)  All asteroids have bright, reflective surfaces. 
E)  Asteroids originated from older moons. 
A)  All asteroids are found in the asteroid belt between Mars and Jupiter. 
B)  Asteroids are also called dwarf planets. 
C)  Asteroids have an irregular shape and are battered by impact cratering. 
D)  All asteroids have bright, reflective surfaces. 
E)  Asteroids originated from older moons.

Question 20

Most meteors come from pieces of comets.

Accepted Answer

A) True 
 B)False

Exam 25: Meteorites, Asteroids, and Comets

The ____ of a comet is a lump of fragile, porous material containing ices of water, carbon dioxide, and ammonia.

Which type of asteroid is classified as rocky, bright, and reddish?

A ____ is produced by ionized gas carried away from the comet by solar wind.

Why is it easier to find an iron meteorite on the ground that it is to witness one fall?

Nonbelt asteroids can become trapped in the _______________ along Jupiter's orbit.

Comets are solid objects.

Some astronomers speculate there are as many Trojan asteroids around Jupiter as asteroids in the asteroid belt.

Only about three comets per year plunge into the Sun and are destroyed.

Comet dust particles that later encounter Earth are seen as meteors.

What do we learn by studying chondrites?

About how far is the Oort cloud from the Sun?

The best place to search for meteorites on Earth is in parts of _______________.

Why don't short-period comets have randomly oriented orbits?

What space mission has collected data on Vesta, with its next destination to be Ceres?

Earth is hit about once a week by meter-size asteroids.

A Trojan asteroid is caught within the Lagrange points of which planet?

Most asteroids are very regular in shape with bright surfaces.

Which statement is true about asteroids?

Most meteors come from pieces of comets.

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