Universe Eighth Edition

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UniverseEighth Edition
i?clicker Questions

• Chapter 13
• Jupiter and Saturns Satellites

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The four largest satellites of Jupiter were first
seen through a telescope by

• the ancient Greeks.
• Galileo Galilei.
• Isaac Newton.
• William Herschel.
• modern day astronomers in the twentieth century.

Q13.1
3
The four largest satellites of Jupiter were first
seen through a telescope by

• the ancient Greeks.
• Galileo Galilei.
• Isaac Newton.
• William Herschel.
• modern day astronomers in the twentieth century.

A13.1
4
Jupiters Galilean satellites Ganymede and
Callisto both have densities between 1000 and
2000 kg/m3. This indicates that they are
composed primarily of

• metals.
• silicates (rocks).
• ices.
• silicates (rocks) and ices.
• metals and silicates.

Q13.2
5
Jupiters Galilean satellites Ganymede and
Callisto both have densities between 1000 and
2000 kg/m3. This indicates that they are
composed primarily of

• metals.
• silicates (rocks).
• ices.
• silicates (rocks) and ices.
• metals and silicates.

A13.2
6
The Galilean satellites of Jupiter

• formed at the same time as Jupiter from the
  so-called Jovian nebula.
• are captured asteroids.
• were formed when a large body collided with
  Jupiter ejecting its outer layers into space.
• are captured comets.
• were formed when several asteroids collided.

Q13.3
7
The Galilean satellites of Jupiter

• formed at the same time as Jupiter from the
  so-called Jovian nebula.
• are captured asteroids.
• were formed when a large body collided with
  Jupiter ejecting its outer layers into space.
• are captured comets.
• were formed when several asteroids collided.

A13.3
8
When Voyager 1 flew past Io, the large satellite
of Jupiter, it sent back pictures that showed

• a very active surface that was devoid of craters.
  
• a heavily cratered surface.
• a featureless globe because of the opaqueness of
  the thick atmosphere of Io.
• erupting volcanoes.
• an icy surface.

Q13.4
9
When Voyager 1 flew past Io, the large satellite
of Jupiter, it sent back pictures that showed

• a very active surface that was devoid of craters.
  
• a heavily cratered surface.
• a featureless globe because of the opaqueness of
  the thick atmosphere of Io.
• erupting volcanoes.
• an icy surface.

A13.4
10
The heating of the Galilean satellites of Jupiter
leads to geologically active surfaces. Which one
of the following best explains the source of
heat?

• As a satellite rotates on its axis, it flexes
  due to the nearby tidal forces of Jupiter. The
  friction that accompanies the flexing creates
  heat.
• As the satellite changes its distance from
  Jupiter in its elliptical orbit, it flexes due
  to the tidal forces of Jupiter. The friction
  that accompanies the flexing creates heat.
• Jupiters intense magnetic field heats up the
  conducting core of the satellite.
• The heat is left over from the formation of the
  satellites.
• Interactions with the solar wind cause the heat.

Q13.5
11
The heating of the Galilean satellites of Jupiter
leads to geologically active surfaces. Which one
of the following best explains the source of
heat?

• As a satellite rotates on its axis, it flexes
  due to the nearby tidal forces of Jupiter. The
  friction that accompanies the flexing creates
  heat.
• As the satellite changes its distance from
  Jupiter in its elliptical orbit, it flexes due
  to the tidal forces of Jupiter. The friction
  that accompanies the flexing creates heat.
• Jupiters intense magnetic field heats up the
  conducting core of the satellite.
• The heat is left over from the formation of the
  satellites.
• Interactions with the solar wind cause the heat.

A13.5
12
Io has active volcanoes that constantly replenish
its surface. The source of energy for these
volcanoes is

• tidal heating due to Jupiter.
• heat from the Sun.
• heat within Io left over from its formation.
• radioactive decay of elements, which keeps Io
  hot.
• Jupiters magnetic field.

Q13.6
13
Io has active volcanoes that constantly replenish
its surface. The source of energy for these
volcanoes is

• tidal heating due to Jupiter.
• heat from the Sun.
• heat within Io left over from its formation.
• radioactive decay of elements, which keeps Io
  hot.
• Jupiters magnetic field.

A13.6
14
Europa shows no signs of cratering because

• Jupiters gravity deflects asteroids away from
  it.
• Europa is tidally heated, producing a partial
  melting of ices within. This liquid then rises
  to the surface and freezes, erasing any craters.
• it is a small moon and therefore few meteors
  impact it.
• Europa has heat left over from its formation so
  that water within it is liquid. This liquid then
  rises to the surface and freezes, erasing any
  craters.
• lava flows have covered any craters that formed.

Q13.7
15
Europa shows no signs of cratering because

• Jupiters gravity deflects asteroids away from
  it.
• Europa is tidally heated, producing a partial
  melting of ices within. This liquid then rises
  to the surface and freezes, erasing any craters.
• it is a small moon and therefore few meteors
  impact it.
• Europa has heat left over from its formation so
  that water within it is liquid. This liquid then
  rises to the surface and freezes, erasing any
  craters.
• lava flows have covered any craters that formed.

A13.7
16
The Galileo spacecraft measured a magnetic field
associated with Europa when Europa moved through
Jupiters magnetic field. A likely reason for
this is that part of the interior of Europa
consists of

• liquid metal.
• solid iron.
• liquid water.
• liquid-conducting hydrogen.
• ice.

Q13.8
17
The Galileo spacecraft measured a magnetic field
associated with Europa when Europa moved through
Jupiters magnetic field. A likely reason for
this is that part of the interior of Europa
consists of

• liquid metal.
• solid iron.
• liquid water.
• liquid-conducting hydrogen.
• ice.

A13.8
18
Where on Jupiter's satellite Europa is liquid
water thought to exist?

• In pools at various locations all over Europa's
  surface
• In pools on Europa's surface, but only near the
  equator
• In pools on Europa's surface, but only near the
  poles
• Beneath Europa's surface
• More than one of the above

Q13.9
19
Where on Jupiter's satellite Europa is liquid
water thought to exist?

• In pools at various locations all over Europa's
  surface
• In pools on Europa's surface, but only near the
  equator
• In pools on Europa's surface, but only near the
  poles
• Beneath Europa's surface
• More than one of the above

A13.9
20
When Voyager 1 flew past Titan, the large
satellite of Saturn, it sent back pictures that
showed

• a very active surface that was devoid of craters.
  
• a heavily cratered surface.
• a featureless globe because of the opaqueness of
  the thick atmosphere of Titan.
• erupting volcanoes.
• an icy surface.

Q13.10
21
When Voyager 1 flew past Titan, the large
satellite of Saturn, it sent back pictures that
showed

• a very active surface that was devoid of craters.
  
• a heavily cratered surface.
• a featureless globe because of the opaqueness of
  the thick atmosphere of Titan.
• erupting volcanoes.
• an icy surface.

A13.10
22
Enceladus, a smaller satellite of Saturn, is
unusual in that

• its partially cratered surface suggests that it
  may be active.
• it underwent a large crater impact which probably
  came close to breaking the satellite into pieces.
  
• it has active volcanoes.
• it has a strong magnetic field.
• it has nitrogen geysers.

Q13.11
23
Enceladus, a smaller satellite of Saturn, is
unusual in that

• its partially cratered surface suggests that it
  may be active.
• it underwent a large crater impact which probably
  came close to breaking the satellite into pieces.
  
• it has active volcanoes.
• it has a strong magnetic field.
• it has nitrogen geysers.

A13.11
24
The large satellite of Saturn, Titan, has an
atmosphere. Which of the following best
describes this atmosphere?

• Denser than the Earths atmosphere, consists
  mostly of nitrogen with a small amount of methane
  
• Less dense than the Earths atmosphere, consists
  mostly of nitrogen with a small amount of methane
  
• Denser than the Earths atmosphere, consists
  mostly of carbon dioxide with a small amount of
  methane
• Less dense than the Earths atmosphere, consists
  mostly of carbon dioxide with a small amount of
  methane

Q13.12
25
The large satellite of Saturn, Titan, has an
atmosphere. Which of the following best
describes this atmosphere?

• Denser than the Earths atmosphere, consists
  mostly of nitrogen with a small amount of methane
  
• Less dense than the Earths atmosphere, consists
  mostly of nitrogen with a small amount of methane
  
• Denser than the Earths atmosphere, consists
  mostly of carbon dioxide with a small amount of
  methane
• Less dense than the Earths atmosphere, consists
  mostly of carbon dioxide with a small amount of
  methane

A13.12
26
Jupiters satellite Ganymede has no atmosphere,
whereas Saturns satellite Titan has a
significant atmosphere. This is because

• Ganymede is much smaller than Titan and thus
  cannot retain an atmosphere.
• Ganymede is closer to the Sun and warmer than
  Titan, so any atmosphere would escape into space.
  
• Ganymede is inactive, whereas Titan is active
  with volcanoes continually replenishing its
  atmosphere.
• Titan is close enough to Saturn that gases leak
  from this planet onto it. Ganymede is too far
  from Jupiter for this to happen.

Q13.13
27
Jupiters satellite Ganymede has no atmosphere,
whereas Saturns satellite Titan has a
significant atmosphere. This is because

• Ganymede is much smaller than Titan and thus
  cannot retain an atmosphere.
• Ganymede is closer to the Sun and warmer than
  Titan, so any atmosphere would escape into space.
  
• Ganymede is inactive, whereas Titan is active
  with volcanoes continually replenishing its
  atmosphere.
• Titan is close enough to Saturn that gases leak
  from this planet onto it. Ganymede is too far
  from Jupiter for this to happen.

A13.13