Question 1

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

Accepted Answer

Antarctica,Sahara desert

Question 2

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 D

Question 3

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 finds but only 6 percent of falls. One of the best places to look for meteorites is in parts of Antarctica because Earth rocks are buried deep beneath the ice cap.  Antarctic ice sheets flow outward and meteorites concentrate in areas where the ice runs into mountain barriers and evaporates.  Teams of scientists have found a thousand meteorites in a single two-month expedition, and over 40,000 after 25 years of work. 
Why iron meteorites? Because an iron meteorite doesn't look like an ordinary rock, they are recognizably different. Stony meteorites deteriorate rapidly when exposed to weather; irons are made of stronger material and generally survive longer, therefore easier to spot on the ground. The fact that only 6 percent of falls are irons shows that iron meteoroids, although easier to find on Earth, are relatively rare in space.

Question 4

On any clear night, you can see 3 to 15 meteors per hour.

Accepted Answer

A) True 
 B)False

Question 5

Long-period comets originate in the _______________.

Accepted Answer

The answer of Long-period comets originate in the _______________....

Question 6

Nearly all meteors are material from _______________.

Accepted Answer

The answer of Nearly all meteors are material from _______________....

Question 7

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

Accepted Answer

A) True 
 B)False

Question 8

What do astronomers believe asteroids are remnants of and why?

Accepted Answer

Astronomers have evidence that the aster

Question 9

What causes the meteor showers we witness on Earth?

Accepted Answer

A)  Earth passes through comet dust particles. 
B)  Earth passes through remnants of an impacted asteroid. 
C)  Earth passes through the asteroid belt. 
D)  Earth passes through the coma of a comet. 
E)  Earth passes through solar wind particles. 
A)  Earth passes through comet dust particles. 
B)  Earth passes through remnants of an impacted asteroid. 
C)  Earth passes through the asteroid belt. 
D)  Earth passes through the coma of a comet. 
E)  Earth passes through solar wind particles.

Question 10

What do the size and shape of Widmanstätten patters indicate?

Accepted Answer

A)  the age of the meteorite 
B)  that the molten metal of the meteorite cooled very slowly 
C)  the metallic content of the core of the meteorite 
D)  the origination of the meteorite 
E)  the number of organic compounds found within the meteorite 
A)  the age of the meteorite 
B)  that the molten metal of the meteorite cooled very slowly 
C)  the metallic content of the core of the meteorite 
D)  the origination of the meteorite 
E)  the number of organic compounds found within the meteorite

Question 11

Stony meteorites are common among falls.

Accepted Answer

A) True 
 B)False

Question 12

Where on Earth is the impact crater that scientists believe caused the extinction of dinosaurs?

Accepted Answer

A)  Flagstaff, Arizona 
B)  Chicxulub, Mexico 
C)  Aricebo, Puerto Rico 
D)  Mauna Kea, Hawaii 
E)  Antarctica 
A)  Flagstaff, Arizona 
B)  Chicxulub, Mexico 
C)  Aricebo, Puerto Rico 
D)  Mauna Kea, Hawaii 
E)  Antarctica

Question 13

What is so special about the carbonaceous chondrites?

Accepted Answer

A)  rich in hydrogen and helium 
B)  rich in organic compounds 
C)  rich in nitrogen 
D)  rich in oxygen 
E)  rich in rare metals, such as gold 
A)  rich in hydrogen and helium 
B)  rich in organic compounds 
C)  rich in nitrogen 
D)  rich in oxygen 
E)  rich in rare metals, such as gold

Question 14

Which type of asteroid is classified only slightly red, mostly consisting of an iron-nickel alloy?

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 15

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 16

_______________ are comets that come very close to the Sun.

Accepted Answer

The answer of _______________ are comets that come very close...

Question 17

Armor asteroids cross into the orbit of which planet?

Accepted Answer

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

Question 18

Do all comets have tails? Explain how comets form their tails.

Accepted Answer

Comets only have tails when they are clo

Question 19

Are comets common?  Explain why or why not.

Accepted Answer

Yes. Faint comets are common; several do

Question 20

What do you think would happen to life on Earth if Earth was hit by a large (1 km or bigger) asteroid or comet?

Accepted Answer

Sixty-five million years ago, at the end

Exam 25: Meteorites Asteroids and Comets

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

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

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

On any clear night, you can see 3 to 15 meteors per hour.

Long-period comets originate in the _______________.

Nearly all meteors are material from _______________.

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

What do astronomers believe asteroids are remnants of and why?

What causes the meteor showers we witness on Earth?

What do the size and shape of Widmanstätten patters indicate?

Stony meteorites are common among falls.

Where on Earth is the impact crater that scientists believe caused the extinction of dinosaurs?

What is so special about the carbonaceous chondrites?

Which type of asteroid is classified only slightly red, mostly consisting of an iron-nickel alloy?

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

_______________ are comets that come very close to the Sun.

Armor asteroids cross into the orbit of which planet?

Do all comets have tails? Explain how comets form their tails.

Are comets common? Explain why or why not.

What do you think would happen to life on Earth if Earth was hit by a large (1 km or bigger) asteroid or comet?

Here and Now

A Users Guide to the Sky

Moon Phases and Eclipses

Origins of Modern Astronomy

Gravity

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Interstellar Medium

Formation and Structure of Stars

Stellar Evolution

Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies

Supermassive Black Holes and Active Galaxies

Modern Cosmology

Origin of the Solar System and Extrasolar Planets

Earth the Active Planet

The Moon and Mercury

Venus and Mars

Jupiter and Saturn

Uranus Neptune Pluto and the Kuiper Belt

Astrobiology

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