Question 1

Describe the atmosphere of Venus.

Accepted Answer

Today, the Venusian atmosphere is 90 tim

Question 2

Which of the following ordering of sizes is correct, from largest to smallest?

Accepted Answer

A)  Uranus → Earth → Mercury 
B)  Jupiter → the Moon → Earth 
C)  Pluto → Saturn → the Moon 
D)  Saturn → Mars → Earth 
A)  Uranus → Earth → Mercury 
B)  Jupiter → the Moon → Earth 
C)  Pluto → Saturn → the Moon 
D)  Saturn → Mars → Earth

Question 3

____________________ is the largest planet in the Solar System.

Accepted Answer

The answer of ____________________ is the largest planet in the...

Question 4

Mercury, Venus, Earth, and Mars are called the ____ planets.

Accepted Answer

A)  dwarf 
B)  terrestrial 
C)  Jovian 
D)  solar 
A)  dwarf 
B)  terrestrial 
C)  Jovian 
D)  solar

Question 5

Asteroids may change their orbits frequently and erratically. Why?

Accepted Answer

A)  Volcanic activity can push off their current orbit. 
B)  Gravitational pulls from planets can deflect them into new orbits. 
C)  Magnetic fields cause them to spin. 
D)  They decrease in mass over time by losing volatiles. 
A)  Volcanic activity can push off their current orbit. 
B)  Gravitational pulls from planets can deflect them into new orbits. 
C)  Magnetic fields cause them to spin. 
D)  They decrease in mass over time by losing volatiles.

Question 6

Over 97% of Venus' atmosphere is composed of ____.

Accepted Answer

A)  carbon dioxide 
B)  oxygen 
C)  water vapor 
D)  hydrogen 
A)  carbon dioxide 
B)  oxygen 
C)  water vapor 
D)  hydrogen

Question 7

The atmosphere of Venus is ____.

Accepted Answer

A)  hot and dense 
B)  cold and dense 
C)  cold and thin 
D)  hot and thin 
A)  hot and dense 
B)  cold and dense 
C)  cold and thin 
D)  hot and thin

Question 8

Why has Earth remained geologically active compared to the Moon?

Accepted Answer

A)  The Earth is so much larger that it took longer to cool. 
B)  The Earth's ocean surface is smaller, so it cooled more quickly. 
C)  The Moon has no atmosphere. 
D)  The lunar crust retained pools of magma. 
A)  The Earth is so much larger that it took longer to cool. 
B)  The Earth's ocean surface is smaller, so it cooled more quickly. 
C)  The Moon has no atmosphere. 
D)  The lunar crust retained pools of magma.

Question 9

The solid portion of a comet is called the ____________________.

Accepted Answer

The answer of The solid portion of a comet is...

Question 10

Olympus Mons, the largest volcano in the Solar System, is located on the planet ____.

Accepted Answer

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

Question 11

Mercury, Venus, Earth, and ____________________ are known as the terrestrial planets.

Accepted Answer

The answer of Mercury, Venus, Earth, and ____________________ are known...

Question 12

The rings of Saturn are composed of ____.

Accepted Answer

A)  an auroral display of ionized gases 
B)  small particles of dust, rock, and ice 
C)  the remains of a hurricane-like storm that was first recorded by Galileo 
D)  solid, continuous sheets of rock 
A)  an auroral display of ionized gases 
B)  small particles of dust, rock, and ice 
C)  the remains of a hurricane-like storm that was first recorded by Galileo 
D)  solid, continuous sheets of rock

Question 13

Describe the two NASA mobile robots that landed on Mars in 2004 and their capabilities.

Accepted Answer

In January 2004, NASA landed two mobile

Question 14

Compare the evolution of Mercury to the evolution of Jupiter.

Accepted Answer

Let us now compare the evolution of Merc

Question 15

Describe the 1991 radar images of Mercury.

Accepted Answer

In 1991, radar images of Mercury reveale

Question 16

What is the main force that drives Earth's internal heat?

Accepted Answer

Earth is large enough to have

Question 17

A meteor that does not completely vaporize and that strikes Earth's surface is called a ____.

Accepted Answer

A)  planetesimal 
B)  comet 
C)  meteorite 
D)  chondrule 
A)  planetesimal 
B)  comet 
C)  meteorite 
D)  chondrule

Question 18

Escape velocity is proportional to the mass, and hence the gravitational force, of a planet.

Accepted Answer

A) True 
 B)False

Question 19

Much of the Moon's surface consists of igneous rocks.

Accepted Answer

A) True 
 B)False

Question 20

Water ice is present on Mars today.

Accepted Answer

A) True 
 B)False

Exam 23: Planets and Their Moons

Describe the atmosphere of Venus.

Which of the following ordering of sizes is correct, from largest to smallest?

____________________ is the largest planet in the Solar System.

Mercury, Venus, Earth, and Mars are called the ____ planets.

Asteroids may change their orbits frequently and erratically. Why?

Over 97% of Venus' atmosphere is composed of ____.

The atmosphere of Venus is ____.

Why has Earth remained geologically active compared to the Moon?

The solid portion of a comet is called the ____________________.

Olympus Mons, the largest volcano in the Solar System, is located on the planet ____.

Mercury, Venus, Earth, and ____________________ are known as the terrestrial planets.

The rings of Saturn are composed of ____.

Describe the two NASA mobile robots that landed on Mars in 2004 and their capabilities.

Compare the evolution of Mercury to the evolution of Jupiter.

Describe the 1991 radar images of Mercury.

What is the main force that drives Earth's internal heat?

A meteor that does not completely vaporize and that strikes Earth's surface is called a ____.

Escape velocity is proportional to the mass, and hence the gravitational force, of a planet.

Much of the Moon's surface consists of igneous rocks.

Water ice is present on Mars today.

Earth Systems

Minerals

Rocks

Geologic Time: a Story in the Rocks

Geologic Resources

The Active Earth: Plate Tectonics

Earthquakes and the Earths Structure

Volcanoes and Plutons

Mountains

Weathering, Soil, and Erosion

Fresh Water: Streams, Lakes, Ground Water, and Wetlands

Water Resources

Glaciers and Ice Ages

Deserts and Wind

Ocean Basins

Oceans and Coastlines

The Atmosphere

Energy Balance in the Atmosphere

Moisture, Clouds, and Weather

Climate

Climate Change

Motions in the Heavens

Stars, Space, and Galaxies

Filters