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Glaciers as Systems
A Glacier behaves like a system with:

Glaciers originate from heavy
snowfalls over a prolonged period
of time. The snow initially has
many air spaces between the
flakes. Over time the weight of
new snow above it compacts it
all, squeezing the air out of the

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Freeze thaw Weathering
Produces jagged rocks
During the day water enters cracks in the rock. Overnight the temperature drops and the water
freezes. As it freezes, it expands. The expanded ices places pressure on the rock, which over time
causes the rock to crack and split.
Leaves rocks ideal…


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