How does a glacier form?
- A glacier forms when snow accumulates over time
- The snow becomes compressed under the weight of more snowfalls
- This turns the accumulated snow to ice
- The ice becomes even more compressed and air is forced out
- The ice crystals become larger as the air spaces become smaller and this turns the ice blue!
- Eventually the combined weight of the ice and the force of gravity forces the ice to start moving (very slowly of course)
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