Question 1

The greenhouse effect keeps Venus hot because

Accepted Answer

A)   the atmosphere contains free oxygen.
B)   the atmosphere is rich in carbon dioxide.
C)   the surface converts infrared into visible radiation.
D)   the surface is free of sulfur compounds.
E)   the magnetic field traps a large number of particles from the solar wind.

Question 2

Venus is very hot because its atmosphere is rich in carbon dioxide.

Accepted Answer

A) True 
 B)False

Question 3

The atmosphere of Venus is about _________ the atmospheric pressure at the surface of Earth.Pick the best answer.

Accepted Answer

A)   0.01x
B)   1x
C)   100x
D)   1000x

Question 4

Radar maps of Venus show impact craters.

Accepted Answer

A) True 
 B)False

Question 5

What is the most abundant gas in the atmosphere of Mars?

Accepted Answer

A)   Molecular nitrogen (N2) 
B)   Molecular oxygen (O2) 
C)   Molecular hydrogen (H2) 
D)   Carbon Dioxide (CO2)

Question 6

Venus has a radius of approximately 6,100 km and a mass of 4.9*1024 kg.What is the escape velocity of Venus?

Accepted Answer

A)   330,000 km/sec
B)   10 km/sec
C)   6 km/sec
D)   33 km/sec
E)   10,000 km/sec

Question 7

What physical property of Venus is vastly dissimilar compared to Earth?

Accepted Answer

A)   Radius
B)   Mass
C)   Density
D)   Surface temperature

Question 8

The canals of Mars were found to be

Accepted Answer

A)   irrigation ditches dug by Martians.
B)   faults in the Martian crust.
C)   straight mountain ranges.
D)   sinuous rilles.
E)   an optical illusion.

Question 9

In contrast to Earth,reasons oxygen does not exist in any quantity in the Martian atmosphere could be because

Accepted Answer

A)   there were never plants to convert carbon dioxide to oxygen like on Earth.
B)   most of the oxygen is chemically combined with iron giving Mars its red color.
C)   the element oxygen is not found alone or combined chemically with hydrogen on Mars.
D)   both answers b and c
E)   both answers a and b

Question 10

Mars has a sufficient mass and a low enough temperature that water vapor molecules could exist in its atmosphere.Why doesn't Mars' atmosphere contain a significant amount of water vapor?

Accepted Answer

A)   Mars formed in a part of the solar nebula that lacked oxygen.
B)   Mars formed in a part of the solar nebula that lacked hydrogen.
C)   Water only exists on Earth
D)   Much water is frozen in the ice caps or below ground
E)   Water is not found in our Solar System

Question 11

Major factors causing the Martian atmosphere to be different from the Earth are

Accepted Answer

A)   its greater distance from the sun.
B)   its smaller mass than the Earth.
C)   transport of water from the poles to the equator in the Martians' canals.
D)   both answers b and c
E)   both answers a and b

Question 12

How rapidly a planet loses its atmosphere depends on the planet's:

Accepted Answer

A)   I & II
B)   III & IV
C)   I,II,& III
D)   II,III,& IV
E)   I,II,III,& IV

Question 13

Valles Marineris is a long valley on Mars believed to resemble the rift valleys of eastern Africa.

Accepted Answer

A) True 
 B)False

Question 14

The size of the volcanoes on Mars indicates that Mars has a ____________________ crust than Earth.

Accepted Answer

The answer of The size of the volcanoes on Mars...

Question 15

Long,deep valleys resembling rift valleys have been found on

Accepted Answer

A)   Venus and Mars.
B)   Mercury and Mars.
C)   Mercury and Venus.
D)   Mars and the moon.
E)   Venus and the moon

Question 16

What do astronomers generally believe about the origin of Mars' moons?

Accepted Answer

A)   They formed with the planet out of the protoplanetary material.
B)   They formed elsewhere and were captured at a later time.
C)   They were ejected from Mars during its formation.
D)   They were once a single moon and a later catastrophic event broke them in two.

Question 17

Why does Mars have seasons similar to the Earth?

Accepted Answer

A)   Mars is roughly the same distance from the sun as Earth.
B)   Mars has the same orbital inclination as the Earth.
C)   The shape of Mars' orbit is the same as the Earth's.
D)   Mars' rotational axis is tilted like the Earth's.

Question 18

The moons of Mars are believed to be

Accepted Answer

A)   composed primarily of iron and nickel.
B)   composed primarily of frozen gases of water and carbon dioxide.
C)   orbiting Mars in a direction opposite to the direction that Mars rotates.
D)   formed from material ejected from Olympus Mons and other large volcanoes on Mars.
E)   captured asteroids.

Question 19

Flow channels on Venus suggest it was once rich in water.

Accepted Answer

A) True 
 B)False

Question 20

Olympus Mons is 600 km in diameter at its base.At its closest to Earth,Mars is 7.8*107 km away.What is the angular diameter of Olympus Mons for an observer on Earth?

Accepted Answer

A)   1.6 seconds of arc
B)   7.7*10-6 seconds of arc
C)   1.3*10-5 seconds of arc
D)   0.63 seconds of arc
E)   8 seconds of arc

Exam 22: Venus and Mars

Radar maps of Venus show impact craters.

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The greenhouse effect keeps Venus hot because

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The atmosphere of Venus is about _________ the atmospheric pressure at the surface of Earth.Pick the best answer.

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What physical property of Venus is vastly dissimilar compared to Earth?

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Why does Mars have seasons similar to the Earth?

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What is the most abundant gas in the atmosphere of Mars?

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The canals of Mars were found to be

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The moons of Mars are believed to be

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Valles Marineris is a long valley on Mars believed to resemble the rift valleys of eastern Africa.

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Long,deep valleys resembling rift valleys have been found on

Correct AnswerverifiedShow Answer

How rapidly a planet loses its atmosphere depends on the planet's:

Correct AnswerverifiedShow Answer

In contrast to Earth,reasons oxygen does not exist in any quantity in the Martian atmosphere could be because

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Venus is very hot because its atmosphere is rich in carbon dioxide.

Correct AnswerverifiedShow Answer

Major factors causing the Martian atmosphere to be different from the Earth are

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Venus has a radius of approximately 6,100 km and a mass of 4.9*1024 kg.What is the escape velocity of Venus?

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Mars has a sufficient mass and a low enough temperature that water vapor molecules could exist in its atmosphere.Why doesn't Mars' atmosphere contain a significant amount of water vapor?

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What do astronomers generally believe about the origin of Mars' moons?

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The size of the volcanoes on Mars indicates that Mars has a ____________________ crust than Earth.

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Flow channels on Venus suggest it was once rich in water.

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Olympus Mons is 600 km in diameter at its base.At its closest to Earth,Mars is 7.8*107 km away.What is the angular diameter of Olympus Mons for an observer on Earth?

Correct AnswerverifiedShow Answer

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Venus has a radius of approximately 6,100 km and a mass of 4.9*10²⁴ kg.What is the escape velocity of Venus?

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Olympus Mons is 600 km in diameter at its base.At its closest to Earth,Mars is 7.8*10⁷ km away.What is the angular diameter of Olympus Mons for an observer on Earth?

Correct Answer
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