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Types of Weathering
Science, Grade 3
❮
1
/
2
❯
© Copyright NewPath Learning. All Rights Reserved. 94-4347
Visit
www.newpathlearning.com
for
Online
Learning
Resources.
Types
of
Weathering
Some
photos
courtesy
of
USGS
and
USFWS.
There
are
two
types
of
weathering
-
physical
and
chemical.
Physical
Weathering
Physical
weathering
takes
place
when
water
and
ice
break
rocks
down
into
smaller
pieces.
This
happens
by
freezing
and
thawing.
Physical
weathering
only
changes
the
size
of
the
rock.
Plant
roots
and
burrowing
animals
can
also
cause
physical
weathering.
Chemical
Weathering
Chemical
weathering
not
only
changes
the
size
of
rocks
but
also
causes
them
to
change
into
different
materials.
During
chemical
weathering
the
rocks
are
broken
down
by
the
actions
of
chemicals
in
the
air
or
water.
granite
granite
sand/silt/clay
water
rusting
(oxidation)
chemical
leaching
© Copyright NewPath Learning. All Rights Reserved. 94-4347
Visit
www.newpathlearning.com
for
Online
Learning
Resources.
Types
of
Weathering
Pause
& Review
Identify
the
following
examples
as
either
physical
or
chemical
weathering.
________________________
________________________
water
(leaching)
acid
rain
________________________
________________________
burrowing
animal
rust
________________________
________________________
plant
roots
freezing
& thawing
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