Weathering is the process by which rocks and minerals are broken down into smaller pieces over time by forces including water, wind, ice, and plant growth. There are three main types of weathering: mechanical, chemical, and organic. Mechanical weathering uses physical forces to break rocks into smaller pieces, chemical weathering uses chemical reactions to decompose rocks, and organic weathering involves plants and plant acids breaking down rocks. Weathering is an important natural process that breaks down all materials in nature over time.

1. Weathering
By: Theresa

2. What is weathering?
-worn away or broken down into
smaller and smaller pieces. There are
mechanical, chemical and organic
weathering processes.
when water hits a object it applys force on
that object. When that happens some part of
the object might fall off, this is called
weathering.

3. Project:
1.Take a ball of dirt and put it
in a tub.
2.Get some water
3.Poor the water on the pile
of dirt
4.Watch what happens

4. Organic weathering
Organic weathering happens
when plants break up rocks
with their growing roots or
plant acids help dissolve rock.

5. Mechanical weathering
Mechanical weathering
physically breaks up rock. One
example is called frost action or
frost shattering. Water gets into
cracks and joints in bedrock.
When the water freezes it
expands and the cracks are
opened a little wider.

6. Chemical weathering
Chemical weathering
decomposes or decays rocks
and minerals. An example of
chemical weathering is
water dissolving limestone.

7. Weathering
Weathering can use rain
water wind ice and many
other things for weathering.
Everything in nature that we
see has been weathered.
There are only 3 types of
weathering