1/13/24 Science

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Do Now

A student on a skateboard pushes off with
their foot increasing their speed. What
happens to their mechanical energy?
The mechanical energy–

A. decreases.
B. increases.
C. stays the same.
D. turns into light energy.

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LO: SWBAT investigate and explain how soils such
as sand and clay are formed by weathering of rock
and by decomposition of plant and animal remains.

DOL: Given scenarios, SW correctly explain how soils
such as sand and clay are formed by weathering of
rock and by decomposition of plant and animal remains
in at least 4 of 5 questions.

3.10B Investigate and explain how soils such as sand and clay are formed by weathering of rock and by decomposition of plant and animal remains.
SEPs:3.1A, 3.1B, 3.1E, 3.1F, 3.2B,
RTCs : 3.5D 3.5E, 3.5G

Changes to Earth’s Surface

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Essential Understandings &

Guiding Questions

How does soil change?

How are soils formed?

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Lesson Vocabulary

process

soil

decomposition

weathering

Process

A natural phenomenon
marked by gradual
changes that lead
toward a particular
result; a continuing
natural or biological
activity or function

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w
e
a
t
h
e
r
i
n
g

d e c o m p o s i t i o n

Soil

A mixture of
weathered rock
and plant and
animal remains,
air, and water

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Decomposition

The process of
breaking down dead
organisms and their
products

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Weathering

The process of breaking
down rock; caused by the
forces of wind, water, or
ice

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Photo credit: Simon Annable/Shutterstock

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What do these two pictures have in common?

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What is weathering?

Photo credit: Simon Annable/Shutterstock

Weathering is the breaking down of landforms
by natural forces such as water, wind, or ice.
Weathering of rocks is a slow process.

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What is decomposition?

Decompose means break down into smaller pieces.
Remains are parts of plants or animals that were
once living. These decomposed parts add nutrients
to the soil.

Identify the processes that lead to soil
formation. List one type of soil as the
final product.

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1.

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How are the processes of weathering and
decomposition similar? Explain why the other
choices are not correct.

A. They are both fast processes.
B. They both include materials such as rock, sand,

and clay.

C. Both involve plants and animals.
D. Both break down material into smaller pieces.

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DOL: Given scenarios,
SW correctly explain
how soils such as sand
and clay are formed by
weathering of rock and
by decomposition of
plant and animal
remains in at least 4 of
5 questions.

Demonstration of Learning