Callisto is a lecture as part of the astrogeology series which includes rocky objects.

This Voyager 2 image of Callisto shows the side opposite to the image from Galileo. Credit: NASA/JPL.

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Quiz Edit


1 True or False, The leading hemisphere is the hemisphere facing the direction of the orbital motion; the trailing hemisphere faces the reverse direction.


2 The cryosphere of Callisto is likely to include which of the following?

water in solid form
sea ice
lake ice
river ice
snow cover
ice caps
ice sheets

3 The science of the behavior of frozen snow is called

4 Chemistry phenomena associated with Callisto are

the human genome
carbon dioxide
organic compounds

5 Complete the text:

With respect to Callisto, the cratered plains constitute most of the

area and represent the

lithosphere, a mixture of ice and


6 Complete the text:

Match up the astroglacial object with each of the possibilities below:
ice cap - A
optical characteristics of sediment suspensions - B
water in solid form - C
behavior of frozen snow - D
ice sheets - E
ice knobs - F

lake Veitastrondsvatn



Antarctica and Greenland

Vatnajökull, Iceland


7 Complete the text:

Match up the object with the image:
Callisto - A
Vatnajökull, Iceland - B
the Cryosphere - C
Antarctica - D
Ganymede - E
Europa - F







8 Which of the following is not an astronomical cryosphere?

Vatnajökull, Iceland
the photosphere
the last ice sheets in Europe and North America
the cryosphere of Callisto
frozen snow
ice sheets are in Antarctica and Greenland

9 True or False, During the last glacial period of Callisto the Laurentide period ice sheet covered much of Valhalla.


10 Which of the following is not an astronomical characteristic of ice?

an albedo as high as 80%
thin water frost deposits
ice knobs
tidal heating events
surface is composed of water ice and is one of the smoothest in the Solar System
the bright rays on the surface of Callisto

11 Yes or No, The tidal flexing of the ice on Callisto may have heated the interior and strained the lithosphere, leading to the development of cracks and horst and graben faulting, which erased the old, dark terrain on 70% of the surface?


Hypotheses Edit

  1. Callisto has more ice on or near its surface than at greater depth.

See also Edit

External links Edit

{{Radiation astronomy resources}}