Question 1

What evidence in Mars's atmosphere supports the idea that Mars once had flowing, liquid water?

Accepted Answer

The abundant presence of deuterium in th

Question 2

Which is a characteristic Venus shares with Earth?

Accepted Answer

A)  Both planets have an ozone layer within their atmospheres. 
B)  Both planets rotate clockwise on their axes. 
C)  Both planets have a uniform circulation within their atmospheres. 
D)  Both planets are still geologically active. 
E)  Both planets have heavily cratered surfaces. 
A)  Both planets have an ozone layer within their atmospheres. 
B)  Both planets rotate clockwise on their axes. 
C)  Both planets have a uniform circulation within their atmospheres. 
D)  Both planets are still geologically active. 
E)  Both planets have heavily cratered surfaces.

Question 3

Why can't Venus's atmosphere break up into small cyclonic storms, like Earth?

Accepted Answer

A)  Venus rotates too slowly. 
B)  Venus rotates backwards. 
C)  Venus has a long orbital period. 
D)  Venus has too much CO2 in its atmosphere. 
E)  Venus has no ozone layer to support cyclonic storms. 
A)  Venus rotates too slowly. 
B)  Venus rotates backwards. 
C)  Venus has a long orbital period. 
D)  Venus has too much CO2 in its atmosphere. 
E)  Venus has no ozone layer to support cyclonic storms.

Question 4

Describe those surface features that indicate water once flowed on Mars.

Accepted Answer

Two kinds of formations hint at water fl

Question 5

Since Mars's axis is tipped 25.2o to its orbit, it experiences ____.

Accepted Answer

A)  seasons 
B)  day and night 
C)  extreme temperature fluctuations 
D)  solar eclipses 
E)  auroras 
A)  seasons 
B)  day and night 
C)  extreme temperature fluctuations 
D)  solar eclipses 
E)  auroras

Question 6

Mars has two moons, Phobos and Deimos.

Accepted Answer

A) True 
 B)False

Question 7

With no water and a thick, slow-moving lower atmosphere, there is little erosion on Venus

Accepted Answer

A) True 
 B)False

Question 8

Why is Venus's atmosphere hotter than Mercury even though it is farther from the Sun?

Accepted Answer

A)  Venus has a thin atmosphere thus allowing more of Sun's radiation to enter. 
B)  Venus contains water vapor in its atmosphere, which absorbs more heat. 
C)  Venus contains 96 percent CO2 resulting in very hot temperatures. 
D)  Mars contains more CO2 , which has a cooling effect on its atmosphere. 
E)  Mercury has a hotter atmosphere because it is closer to the Sun than Venus. 
A)  Venus has a thin atmosphere thus allowing more of Sun's radiation to enter. 
B)  Venus contains water vapor in its atmosphere, which absorbs more heat. 
C)  Venus contains 96 percent CO2 resulting in very hot temperatures. 
D)  Mars contains more CO2 , which has a cooling effect on its atmosphere. 
E)  Mercury has a hotter atmosphere because it is closer to the Sun than Venus.

Question 9

What are coronae on the surface of Venus?

Accepted Answer

A)  ice trapped at the poles 
B)  subduction zones creating jagged mountains 
C)  peaks of the highlands 
D)  features left by rising convection currents 
E)  the basin of an impact crater 
A)  ice trapped at the poles 
B)  subduction zones creating jagged mountains 
C)  peaks of the highlands 
D)  features left by rising convection currents 
E)  the basin of an impact crater

Question 10

Venus's tectonic processes seem to be vertical rather than horizontal.

Accepted Answer

A) True 
 B)False

Question 11

Radar maps provide information about _______________, roughness and in some cases, chemical composition of a planet's surface.

Accepted Answer

The answer of Radar maps provide information about _______________, roughness...

Question 12

Which statement best describes Phobos and Deimos?

Accepted Answer

A)  small satellites, irregular in shape and heavily cratered 
B)  large satellites, spherical in shape with smooth surfaces 
C)  small satellites, spherical in shape with smooth surface. 
D)  one large and one small satellite, irregular in shape with lava flows 
E)  large satellites, irregular in shape and heavily cratered 
A)  small satellites, irregular in shape and heavily cratered 
B)  large satellites, spherical in shape with smooth surfaces 
C)  small satellites, spherical in shape with smooth surface. 
D)  one large and one small satellite, irregular in shape with lava flows 
E)  large satellites, irregular in shape and heavily cratered

Question 13

Martian volcanoes are _______________ volcanoes with gradual slopes.

Accepted Answer

The answer of Martian volcanoes are _______________ volcanoes with gradual...

Question 14

Venus is 95 percent the diameter of Earth.

Accepted Answer

A) True 
 B)False

Question 15

What keeps water frozen on Mars?

Accepted Answer

A)  The constant subzero surface temperatures 
B)  The low atmospheric pressure of the planet 
C)  The distance between Mars and the Sun 
D)  The relatively quick rotation period 
E)  The negligible axis tilt of the planet 
A)  The constant subzero surface temperatures 
B)  The low atmospheric pressure of the planet 
C)  The distance between Mars and the Sun 
D)  The relatively quick rotation period 
E)  The negligible axis tilt of the planet

Question 16

Venus has many more _______________ than Earth, but not nearly as many as Earth's Moon.

Accepted Answer

The answer of Venus has many more _______________ than Earth,...

Question 17

How often does Venus rotate on its axis?

Accepted Answer

A)  24 h 
B)  182 Earth days 
C)  243 Earth days 
D)  1 Earth year 
E)  3 Earth years 
A)  24 h 
B)  182 Earth days 
C)  243 Earth days 
D)  1 Earth year 
E)  3 Earth years

Question 18

Venus has an atmosphere that rotates within a period of only four days.

Accepted Answer

A) True 
 B)False

Question 19

How does the atmosphere of Venus circulate in comparison to the atmosphere of Earth?

Accepted Answer

Venus rotates very slowly; therefore, he

Question 20

Which period of Mars's planetary history has been the most uneventful?

Accepted Answer

A)  Mesozoic 
B)  Noachian 
C)  Amazonian 
D)  Jurassic 
E)  Hesperian 
A)  Mesozoic 
B)  Noachian 
C)  Amazonian 
D)  Jurassic 
E)  Hesperian

Exam 22: Venus and Mars

What evidence in Mars's atmosphere supports the idea that Mars once had flowing, liquid water?

Which is a characteristic Venus shares with Earth?

Why can't Venus's atmosphere break up into small cyclonic storms, like Earth?

Describe those surface features that indicate water once flowed on Mars.

Since Mars's axis is tipped 25.2o to its orbit, it experiences ____.

Mars has two moons, Phobos and Deimos.

With no water and a thick, slow-moving lower atmosphere, there is little erosion on Venus

Why is Venus's atmosphere hotter than Mercury even though it is farther from the Sun?

What are coronae on the surface of Venus?

Venus's tectonic processes seem to be vertical rather than horizontal.

Radar maps provide information about _______________, roughness and in some cases, chemical composition of a planet's surface.

Which statement best describes Phobos and Deimos?

Martian volcanoes are _______________ volcanoes with gradual slopes.

Venus is 95 percent the diameter of Earth.

What keeps water frozen on Mars?

Venus has many more _______________ than Earth, but not nearly as many as Earth's Moon.

How often does Venus rotate on its axis?

Venus has an atmosphere that rotates within a period of only four days.

How does the atmosphere of Venus circulate in comparison to the atmosphere of Earth?

Which period of Mars's planetary history has been the most uneventful?

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A Users Guide to the Sky

Moon Phases and Eclipses

Origins of Modern Astronomy

Gravity

Light and Telescopes

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The Sun

The Family of Stars

The Interstellar Medium

Formation and Structure of Stars

Stellar Evolution

Deaths of Stars

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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

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Since Mars's axis is tipped 25.2^o to its orbit, it experiences ____.