Read the following paragraph and answer the question. Give ONLY the answer, no other words or explanation.

For example:

Answer: <most likely answer, as short as possible>.

Paragraph: 
Because the ice is moving, glaciers have cracks called crevasses ( Figure below ). There is a large crevasse at the top of an alpine glacier called a bergshrund . Below the bergshrund, the ice is moving downhill. Above the bergshrund, the ice is stuck to the mountain.


Question: The movement of ice causes glaciers to have cracks referred to as?
crevasses
crevasses.