Page 116 - Science Course 2 (Book 2)

Mo10-L5b: What Changes Earth’s Surface?

Ice Much of North America was covered by ice 20,000
years ago
Large masses of ice, formed by snow accumulation
on land, that move slowly across Earth’s surface are
called glaciers.

The processes that move
Earth material depend
on climate, or the
average weather
in a region over
a long period
of time.
Sliding and f owing ice can weather the rocks over
which the ice moves, creating sediment that glaciers The processes
carry away. that change the
features made by
plate movement
are affected by plate
movement itself.
Key Concept

What Changes Earth’s Surface?

How do water, ice, and wind change Earth’s
surface?

When a glacier melts, it deposits the sediment it
carried.
SUMMARY
What Changes Earth’s Surface?

Gravity, wind, water, and ice can cause physical
and chemical weathering. They break down,
erode, transport, and deposit rocks and
sediment.

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