Astronomy a beginners guide to the universe 8th CHaisson mcmillan chapter 08 clicker questions

As their distance from Jupiter increases, the four Galilean satellites show a consistentExplanation: Like a miniature version of our solar system, Jupiter’s four large moons show a decre

As their distance from Jupiter increases, the four Galilean satellites show a consistent

As their distance from Jupiter increases, the four Galilean satellites show a consistent

Explanation: Like a miniature

version of our solar system,

Jupiter’s four large moons show a decrease in density as distance increases Io is most dense of the four; Callisto

is least dense

The surface of which jovian moon most resembles the pack ice of the Arctic Ocean?

The surface of which jovian moon most resembles the pack ice of the Arctic Ocean?

Explanation: Ice-filled surface cracks

indicate an ocean may lie below

What is thought to cause Io’s volcanism?

What is thought to cause Io’s volcanism?

c) Tidal stress from Jupiter

How was the ring of Jupiter discovered?

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How was the ring of Jupiter discovered?

Explanation: Jupiter’s ring is composed of dark, dusty particles that were first seen when Voyager was past the

planet, looking back toward the Sun

The Roche limit is defined as the critical

a moon can experience synchronous rotation

still be classified as a moon

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The Roche limit is defined as the critical

a) distance from a planet, inside of which a moon can be tidally destroyed.

a moon can experiencesynchronous rotation

still be classified as a moon

Explanation: Saturn’s rings, as

well as those of the other jovian

planets, lie within its planet’s Roche limit

Shepherd satellites are defined as

moon

of another, larger moon

system of rings

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Shepherd satellites are defined as

b) moons that confine a narrow ring.

moon

of another, larger moon

system of rings

Why are the rings of Saturn so bright?

metallic hydrogen

expelled by volcanoes onEnceladus

an additional glow onto the rings

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Why are the rings of Saturn so bright?

metallic hydrogen

expelled by volcanoes onEnceladus

an additional glow onto the rings

e) They are made of relatively new ice.

Explanation: Saturn’s rings are perhaps only 50 million years old, the result of a small moon coming within the planet’s Roche limit

Which moon in the solar system shows a dense atmosphere?

Which moon in the solar system shows a dense atmosphere?

Explanation: The Huygens probe,

deployed by the Cassini spacecraft

in 2005, showed that Titan’s

atmosphere has a complex organic

chemistry

Which of the Uranian moons displays the widest range of surface terrains, suggesting some catastrophic disruption?

Which of the Uranian moons displays the widest range of surface terrains, suggesting some catastrophic disruption?

The rings of Neptune

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The rings of Neptune

e) All of these are correct.

Neptune’s moon Triton shows

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Neptune’s moon Triton shows

b) volcanic features similar to those on Io.

of Callisto

Explanation: Triton has a thin

atmosphere, active geysers of nitrogen

gas, large fissures, and frozen lakes of

water ice

Many astronomers believe Pluto is perhaps best classified as a

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Many astronomers believe Pluto is perhaps best

classified as a

c) large Kuiper belt object.

Explanation: Several other large Kuiper belt objects have been discovered, including the largest known, called Eris

Which of these moons are most exciting to exobiologists?

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Which of these moons are most exciting to exobiologists?

b) Titan and Europa

Explanation: Europa has

indications of liquid water

beneath the ice Titan shows

evidence of channels under its

dense atmosphere

Which of the following is true of Pluto?

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Which of the following is true of Pluto?

e) All of these are true.

Explanation: New Horizons

spacecraft traveled past the

Pluto–Charon system in

2015 Images showed tall,

icy mountains as well as the

large plain shown here