Question 1

The most likely region of the radio spectrum for communication with other civilizations is the water hole, the part of the spectrum

Accepted Answer

A) near the radio emission of water. 
B) near the radio emission of oxygen molecules. 
C) between the radio emissions of hydrogen and oxygen. 
D) between the radio emissions of hydrogen and OH. 
E) near the radio band where water in the Earth's atmosphere strongly absorbs energy. 
A) near the radio emission of water. 
B) near the radio emission of oxygen molecules. 
C) between the radio emissions of hydrogen and oxygen. 
D) between the radio emissions of hydrogen and OH. 
E) near the radio band where water in the Earth's atmosphere strongly absorbs energy.

Question 2

The habitable zone around a star is

Accepted Answer

A) the region on a planet where conditions are acceptable for life to exist. 
B) a region around a star where a planet's temperature would permit the existence of liquid water. 
C) very small for a massive star. 
D) only found around G and K stars. 
E) a region on a young planet where amino acids can begin to form DNA molecules. 
A) the region on a planet where conditions are acceptable for life to exist. 
B) a region around a star where a planet's temperature would permit the existence of liquid water. 
C) very small for a massive star. 
D) only found around G and K stars. 
E) a region on a young planet where amino acids can begin to form DNA molecules.

Question 3

Even if societies on stars in distant galaxies survive at a technological level for only 10 years, that is long enough to establish two-way communication with them.

Accepted Answer

A) True 
 B)False

Question 4

____________ are composed of bacterial mats and sediment layers.

Accepted Answer

The answer of ____________ are composed of bacterial mats and...

Question 5

DNA molecules cannot be altered by chance errors in reproduction.

Accepted Answer

A) True 
 B)False

Question 6

Deoxyribonucleic acid contains the genetic information of a cell. It is better known as

Accepted Answer

A) vitamin D. 
B) reproductive enzymes. 
C) RNA. 
D) DNA. 
E) vitamin B12. 
A) vitamin D. 
B) reproductive enzymes. 
C) RNA. 
D) DNA. 
E) vitamin B12.

Question 7

-The complex organism fossil cast shown above first appeared in the __________ period.

Accepted Answer

A) Pre-Cambrian 
B) Cambrian 
C) Tertiary 
D) Jurassic 
A) Pre-Cambrian 
B) Cambrian 
C) Tertiary 
D) Jurassic

Question 8

The chemistry of life on Earth takes place in _____________.

Accepted Answer

A) carbon 
B) water 
C) silicon 
D) methyl alcohol 
A) carbon 
B) water 
C) silicon 
D) methyl alcohol

Question 9

Life began on Earth as multicellular.

Accepted Answer

A) True 
 B)False

Question 10

Explain which noise is found and which noise is eliminated in the water hole.

Accepted Answer

The noise from the Milky Way G

Question 11

Using laser beams within the solar system to find distances to celestial objects is possible but the length of time needed could be exceeding long for real communication.

Accepted Answer

A) True 
 B)False

Question 12

Our civilization's lifetime needs to be considered in obtaining a realistic estimate of the number of civilizations that we can communicate with in our galaxy.

Accepted Answer

A) True 
 B)False

Question 13

Presuming that it takes several billion years of complex live to evolve in a stable environment, the stars most likely to currently have inhabited planets with favorable conditions for life are

Accepted Answer

A) G to K main-sequence stars. 
B) B to A main-sequence stars. 
C) G to K giants. 
D) white dwarf stars 
E) neutron stars. 
A) G to K main-sequence stars. 
B) B to A main-sequence stars. 
C) G to K giants. 
D) white dwarf stars 
E) neutron stars.

Question 14

As far as we know all forms of life on Earth use ____________ as a medium for chemical reactions.

Accepted Answer

A) gaseous helium 
B) Gaseous Helium 
C) frozen carbon dioxide 
D) liquid water 
E) frozen water 
A) gaseous helium 
B) Gaseous Helium 
C) frozen carbon dioxide 
D) liquid water 
E) frozen water

Question 15

What is the difference between chemical evolution and biological evolution

Accepted Answer

Chemical evolution is a process where mo

Question 16

Genetic variation is not random.

Accepted Answer

A) True 
 B)False

Question 17

Replicating early Earth conditions in the lab, the Miller experiment created from inorganic chemicals

Accepted Answer

A) life. 
B) artificial proteins. 
C) DNA. 
D) simple molds. 
E) amino acids. 
A) life. 
B) artificial proteins. 
C) DNA. 
D) simple molds. 
E) amino acids.

Question 18

The ____________ is a region around a star where liquid water can exist.

Accepted Answer

The answer of The ____________ is a region around a...

Question 19

The best places for life to have formed on Earth are believed to have been

Accepted Answer

A) near the south pole in places where water is frozen solid as ice. 
B) on the continent of Africa in the areas with no water. 
C) in liquid water, probably in the oceans or pools of water. 
A) near the south pole in places where water is frozen solid as ice. 
B) on the continent of Africa in the areas with no water. 
C) in liquid water, probably in the oceans or pools of water.

Question 20

-In the Arecibo message shown above, the purple line leads to a purple arc with a letter M, which represents ______________.

Accepted Answer

A) a common color of the rainbow being transmitted in a region of the EM spectrum that text messages are sent in 
B) two letters of the Greek alphabet 
C) the radio dish sending a common letter of the English alphabet 
D) the radio dish sending a signal 
A) a common color of the rainbow being transmitted in a region of the EM spectrum that text messages are sent in 
B) two letters of the Greek alphabet 
C) the radio dish sending a common letter of the English alphabet 
D) the radio dish sending a signal

The most likely region of the radio spectrum for communication with other civilizations is the water hole, the part of the spectrum

The habitable zone around a star is

Even if societies on stars in distant galaxies survive at a technological level for only 10 years, that is long enough to establish two-way communication with them.

____________ are composed of bacterial mats and sediment layers.

DNA molecules cannot be altered by chance errors in reproduction.

Deoxyribonucleic acid contains the genetic information of a cell. It is better known as

-The complex organism fossil cast shown above first appeared in the __________ period.

The chemistry of life on Earth takes place in _____________.

Life began on Earth as multicellular.

Explain which noise is found and which noise is eliminated in the water hole.

Using laser beams within the solar system to find distances to celestial objects is possible but the length of time needed could be exceeding long for real communication.

Our civilization's lifetime needs to be considered in obtaining a realistic estimate of the number of civilizations that we can communicate with in our galaxy.

Presuming that it takes several billion years of complex live to evolve in a stable environment, the stars most likely to currently have inhabited planets with favorable conditions for life are

As far as we know all forms of life on Earth use ____________ as a medium for chemical reactions.

What is the difference between chemical evolution and biological evolution

Genetic variation is not random.

Replicating early Earth conditions in the lab, the Miller experiment created from inorganic chemicals

The ____________ is a region around a star where liquid water can exist.

The best places for life to have formed on Earth are believed to have been

-In the Arecibo message shown above, the purple line leads to a purple arc with a letter M, which represents ______________.

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

Meteorites, Asteroids, and Comets

Filters

Exam 20: Astrobiology: Life on Other Worlds

The most likely region of the radio spectrum for communication with other civilizations is the water hole, the part of the spectrum

The habitable zone around a star is

Even if societies on stars in distant galaxies survive at a technological level for only 10 years, that is long enough to establish two-way communication with them.

____________ are composed of bacterial mats and sediment layers.

DNA molecules cannot be altered by chance errors in reproduction.

Deoxyribonucleic acid contains the genetic information of a cell. It is better known as

-The complex organism fossil cast shown above first appeared in the __________ period.

The chemistry of life on Earth takes place in _____________.

Life began on Earth as multicellular.

Explain which noise is found and which noise is eliminated in the water hole.

Using laser beams within the solar system to find distances to celestial objects is possible but the length of time needed could be exceeding long for real communication.

Our civilization's lifetime needs to be considered in obtaining a realistic estimate of the number of civilizations that we can communicate with in our galaxy.

Presuming that it takes several billion years of complex live to evolve in a stable environment, the stars most likely to currently have inhabited planets with favorable conditions for life are

As far as we know all forms of life on Earth use ____________ as a medium for chemical reactions.

What is the difference between chemical evolution and biological evolution

Genetic variation is not random.

Replicating early Earth conditions in the lab, the Miller experiment created from inorganic chemicals

The ____________ is a region around a star where liquid water can exist.

The best places for life to have formed on Earth are believed to have been

-In the Arecibo message shown above, the purple line leads to a purple arc with a letter M, which represents ______________.

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

Meteorites, Asteroids, and Comets

Filters