Suggested levels for Guided Reading, DRA,™
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Rocks,
Wind,
Water
Genre
Nonfiction
Concept
Patterns in
Nature
Scott Foresman Reading Street 4.3.5
ISBN-13: 978-0-328-46913-0
ISBN-10:
0-328-46913-0
9 0 0 0 0
9
780328 469130
By Jeri Cipriano
Concept Words
canyon
erosion
forces of nature
layers
plain
Rocks,
Wind,
and Water
Reader Response
Read Together
1. What are some forces of nature?
2. How was the Grand Canyon made?
3. Name a landform that has changed
over time. Tell what caused the
changes.
By Jeri Cipriano
weathering
Word count: 218
Note: The total word count includes words in the running text and headings only.
Numerals and words in chapter titles, captions, labels, diagrams, charts, graphs,
sidebars, and extra features are not included.
(MFOWJFX*MMJOPJTt#PTUPO.BTTBDIVTFUUTt$IBOEMFS"SJ[POBt
Hoboken/FX+FSTFZ
This is the Grand Canyon. It’s about
one mile deep. You can look down from
the top and see layers of rocks in its
walls. Far, far below you’ll see a river.
Illustrations
6 Judith Hunt.
Photographs
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photographic material. The publisher deeply regrets any omission and pledges to
correct errors called to its attention in subsequent editions.
Unless otherwise acknowledged, all photographs are the property of Pearson
Education, Inc.
Photo locators denoted as follows: Top (T), Center (C), Bottom (B), Left (L), Right (R),
Background (Bkgd)
Opener: ©Stockxpert; 1 ©kojihirano/Fotolia; 3 ©Demetrio Carrasco/©DK Images;
4 SCPhotos/Alamy Images; 5 Jupiter Images; 7 ©Stockxpert; 8 ©kojihirano/Fotolia;
10 ©David Wall/Alamy Images; 11 Barbara Lechner/Shutterstock; 12 ©Stockxpert.
ISBN 13: 978-0-328-46913-0
ISBN 10:
0-328-46913-0
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1 2 3 4 5 6 7 8 9 10 V0G1 13 12 11 10 09
3
Take a mule ride down into the
Grand Canyon. You’ll pass the layers of
rocks. The lower you go, the older the
rocks are. The rocks at the bottom are
two billion years old!
The Colorado River flows at the
bottom of the Grand Canyon. The river
made the canyon. How did this happen?
4
5
Let’s go back about six million years.
Back then, there was no Grand Canyon.
The river flowed through a plain.
So where did the canyon come from?
6
7
It took millions of years to make the
canyon. Each year, the river took away
bits of rock and sand. Big winds took
away bits of rock and sand too. Each
winter, ice broke off chunks of rock.
8
This happened year after year. It is
still happening. These forces of nature
are called weathering.
9
Erosion is another force of nature.
You can see erosion after a big
rainstorm.
The rainwater rushes fast. It takes
soil and small rocks with it. It can take
bushes and trees too.
10
11
Forces of nature act slowly. They
make small changes over years and
years. But they never, ever stop.
Reader Response
H[WZJe][j^[h
1. What are some forces of nature?
2. How was the Grand Canyon made?
3. Name a landform that has changed
over time. Tell what caused the
changes.
12