Does Europa have any land mass or volcanic activity?

Europa have a land mass which is made up of frozen ice on the upper crust.

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Europa is similar in bulk composition to the terrestrial planets, being primarily composed of silicate rock. It has an outer layer of water thought to be around 100 km (62 mi) thick; some as frozen-ice upper crust, some as liquid ocean underneath the ice.
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information quoted from http://en.wikipedia.org/wiki/Europa_%28moon%29

http://upload.wikimedia.org/wikipedia/commons/thumb/8/88/EuropaInterior1.jpg/260px-EuropaInterior1.jpg

What is the gravitational force on Europa?
Tidal waves are the gravitational force on Europa
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Most planetary scientists believe that a layer of liquid water exists beneath Europa's surface, kept warm by tidally generated heat.36 The heating by radioactive decay, which is almost the same as in Earth (per kg of rock), cannot provide necessary heating in Europa, because the volume-to-surface ratio is much lower due to the moon's smaller size.
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information quoted from http://en.wikipedia.org/wiki/Europa_%28moon%29
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Since Europa is tidally locked to Jupiter, and therefore always maintains the same approximate orientation towards the planet, the stress patterns should form a distinctive and predictable pattern.
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information quoted from http://en.wikipedia.org/wiki/Europa_%28moon%29

Could Europa support life?
Europa have the capacity to support life especially the liquid ocean underneath the ice.

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Europa's unlit interior is now considered to be the most likely location for extant extraterrestrial life in the Solar System.56 Life may exist in its under-ice ocean, perhaps subsisting in an environment similar to Earth's deep-ocean hydrothermal vents or the Antarctic Lake Vostok.57 Life in such an ocean could possibly be similar to microbial life on Earth in the deep ocean.5859 So far, there is no evidence that life exists on Europa, but the likely presence of liquid water has spurred calls to send a probe there.
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information quoted from http://en.wikipedia.org/wiki/Europa_%28moon%29
You can read the subsection "Possible extraterrestrial life" for more information.
Source(s):
http://en.wikipedia.org/wiki/Europa_%28moon%29

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