Friday_Jan.24_W.E.D.

4th Grade Science
Patterns on Earth
Lesson 7

Friday
January 24, 2025.

2

Do Now

1. What was the average monthly temperature for

the month of July? ___________

2. What was the average seasonal temperature for

Spring? ______________

3

Patterns on Earth

LO:SWBAT model and describe
slow changes to Earth’s surface
caused by weathering, erosion,
and deposition by wind.

DOL: Given scenarios, SW correctly describe slow changes
to Earth’s surface caused by weathering, erosion, and
deposition by wind in at least 4 of 5 questions.

SCI.4.10B Model and describe slow changes to Earth’s surface caused by weathering, erosion, and deposition from water, wind, and
ice.
SEPs 4.1G, 4.2A, 4.3A
RTCs 4.5G, 4.5B, 4.5D

W.E.D.

4

Essential Understandings &

Guiding Questions

How does wind shape Earth’s surface?

How do slow changes shape Earth’s surface?

How are sand dunes formed?

5

Lesson Vocabulary

landform

weathering

erosion

deposition

sediment

sand dune

Multiple Choice

What is sediment?

• the process of rocks being broken down and carried away
• bits of rock, sand, and silt caused by the weathering of rocks
• the top layer of the soil
• decaying plant or animal material 

Multiple Choice

Which of these is an example of erosion?

• Light shinning onto a mountain

• Rain breaking down rock

• Wind blowing away sediment

• All of the above

Multiple Select

Which are the main agents or erosion?

• wind

• dust

• ice

• water

• clouds

Multiple Choice

Sand piling up to form a dune is an example of

• Weathering

• Erosion

• Deposition

6

How does wind shape earth’s surface?

7

How does wind shape Earth’s surface?

Materials

Sand
Straw

Plastic container/bin

Protective eyewear (goggles)

Illustration

Observation

Sand Hill
(before blowing
the wind)

Sand Hill (after
blowing the
wind)

1. Put sand in the plastic container/bin. What
observations can you make?

2. Now, make a hill of sand in the container
using your hands. Draw and record your
observations.

3. With your protective eyewear on, blow into
the straw towards the sand to create ‘wind’
blowing on the hill. What changes do you
observe? Draw and record your observations.

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How do slow changes shape Earth’s surface?

A landform is a natural feature on Earth’s surface. The movement
of water, wind, and icecause slow changes that shape Earth’s
landforms.

The changes are

very slow and occur
over periods of time
that are longer than

one person’s

lifetime, such as

thousands or

millions of years.

How long do you

think it took for this
desert arch to form?

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What is weathering by wind?

Weathering is the breaking down of landforms by natural forces
such as wind.

Photo credit: CHC3537/Shutterstock; Louise Murray/Science Source

Copyright © Savvas Learning Company LLC. All Rights Reserved. Savvas is not responsible for any modifications made by end users to the content posted in its original format.

What is erosion by wind?

Erosion is the process of sediments or rocks being moved from
one place to another by wind.

Photo credit: Yerbolat Shadrakhov/Shutterstock; Dr Morley Read/Shutterstock

Wind

contributes
to erosion by
blowing the

particles

away.

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What is deposition by wind?

Deposition is the drop off of particles in a new place by wind.

12

How are sand dunes formed?

Where do sand

dunes come

from?

Copyright © Savvas Learning Company LLC. All Rights Reserved. Savvas is not responsible for any modifications made by end users to the content posted in its original format.

How Wind Shapes Landforms

Explain how weathering, erosion, and deposition by wind can cause
the formation of a sand dune.

Weathering by wind
breaks rocks into smaller
pieces. Wind moves the
sand from one location to
another. Then the sand is
deposited in a pile,
forming a sand dune.

Photo credit: apstockphoto/Shutterstock

Landform

A natural feature of the
Earth’s surface

Weathering

The breaking up of
rocks into smaller
pieces by water, wind,
or ice

Erosion

The movement of rocks
and sediments by
water, wind, ice, or
gravity

Deposition

Sediments are
deposited or dropped
off in a new location

Sediment

Material that is broken
down by the processes
of weathering and
erosion and is carried
by wind, water, or ice.

Sand Dune

A hill that is created by
sediments being
deposited in a specific
area

20

Sand dunes can be found in a beach or desert ecosystem. Which
of the following best explains the process that forms sand dunes?

A.

Sand dunes are formed when the ocean weathers sand particles and deposits
them in a new location.

B.

Sand dunes are formed when cacti roots erode rocks and shells and deposit
them in a new location.

C.

Sand dunes are formed when the wind erodes sand particles and deposits them
in a new location.

D.

Sand dunes are formed when glaciers cut through the land and deposit sand
particles in a new location.

21

How does wind contribute to weathering?

A.

It causes chemical reactions that dissolve rocks.

B.

It transports water that breaks down rock surfaces.

C.

It compresses rock layers deep beneath the Earth's surface.

D.

It carries small particles that scrape against rock surfaces, wearing them down

over time.

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DOL: Given
scenarios, SW
correctly describe
slow changes to
Earth’s surface
caused by
weathering, erosion,
and deposition by
wind in at least 4 of
5 questions.

Demonstration of Learning

●Some images used in this lesson are taken from Adobe Stock. Adobe Stock
https://stock.adobe.com

●Some images used in this lesson are taken from Great Minds. Great Minds
https://digital.greatminds.org

●Some images used in this lesson are taken from SAVVAS realize. SAVVAS
realize https://www.savvasrealize.com

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Copyright for Reference