Atmospheres Of Venus, Earth, And Mars

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Our Place in the Universe
Patterns in the Skymotions of Earth
Laws of Motion
Light and Telescopes
The Formation of Stars and Planets
Terrestrial Worlds in the Inner Solar System
Atmospheres of Venus, Earth, and Mars
The Giant Planets
Small Bodies of the Solar System
Measuring the Stars
Our Star: The Sun
Evolution of Low-Mass Stars
Evolution of High-Mass Stars
The Expansion of Space
The Realm of the Galaxies
Our Galaxy: The Milky Way
Modern Cosmology and the Origin of Structure
Life in the Universe

All Questions

Question 1

Free

True/False

Molecules in the atmosphere moving faster than the escape speed of the planet are lost to space.

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True

False

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Question 2

Free

True/False

The major component of the air we breathe today was deposited on Earth via cometary impacts.

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True

False

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Question 3

Free

True/False

All the terrestrial planets have atmospheres as dense as or denser than Earth's.

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True

False

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Question 4

Free

True/False

In the absence of a greenhouse effect,water would still be liquid on the surface of Earth.

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True

False

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Question 5

Free

True/False

Mars's atmosphere is mostly composed of carbon dioxide,therefore the greenhouse effect makes the average temperature 35 degrees warmer than it would be without its atmosphere.

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True

False

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Question 6

True/False

If the carbon dioxide in Earth rocks were suddenly released into its atmosphere,Earth could quite possibly undergo a runaway greenhouse effect.

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True

False

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Question 7

True/False

The fraction of oxygen in the Earth's atmosphere has always remained about the same as it is today.

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True

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Question 8

True/False

Charged particles can easily move across magnetic field lines,but not along them.

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True

False

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Question 9

True/False

Winds are generated on Earth because the Sun unevenly heats a rotating planet.

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True

False

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Question 10

True/False

The planet-wide flow of air from the warm equator to the colder poles is called Hadley circulation.

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True

False

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Question 11

True/False

Venus's atmospheric clouds are so thick that the surface of the planet is rarely seen when observing it in visible light.

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True

False

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Question 12

True/False

Venus rotates so rapidly that the dominant form of convection is powered by hurricanes moving east to west in its atmosphere.

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True

False

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Question 13

True/False

When the Martian summer occurs and the daytime temperature is 20°C,water on the surface melts and forms small pools of liquid.

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True

False

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Question 14

True/False

Examine the figure below.Over the past 50 years,the average temperature of the Earth has risen by approximately 1°C.

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True

False

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Question 15

True/False

In our solar system,a planet's temperature depends primarily on its albedo and distance from the Sun.

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True

False

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Question 16

True/False

The reason that Earth is hotter than Jupiter is because the Earth is smaller than Jupiter.

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True

False

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Question 17

Multiple Choice

Which of the following contributes most to the large difference in the average daytime and nighttime temperatures on the Moon?

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The lack of a hydrosphere

The lack of a magnetosphere

The lack of an atmosphere

The lack of geologic activity

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Question 18

Multiple Choice

We do not expect Mercury to have an atmosphere at all because:

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it is small

it has a high temperature

it is bombarded by intense solar radiation

all of the above

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Question 19

Multiple Choice

Why did the terrestrial planets lose their primary atmospheres?

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Their low gravities couldn't hold them.

The solar wind blew them away.

Their high surface temperatures made them chemically react with rock.

The centrifugal force from their fast rotation rates made them fly off.

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Question 20

Multiple Choice

The nitrogen in the Earth's atmosphere came from:

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ammonia delivered by comet impacts

photosynthesis in algae and plants

oxidation

impacts

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