Keep this sheet.
Collect them all!
Explore your world
with this
Science-to-Go
backpack
2
GO
N
A
E
C
O
Books
in this
backpack
G
3-5
s
e
rad
•Extreme Oceans
Idea!
by Seymour Simon
•The Great Bear Sea: Exploring the Marine Life of a Pacific Paradise
by Ian McAllister and Nicholas Read
•Neighborhood Sharks: Hunting with the Great Whites of California’s Farallon Islands
Some nonfiction books
aren’t meant to be
read from beginning to
end. Try skimming one
of the books to find
the sections you most
want to read.
by Katherine Roy
•Ocean Sunlight: How Tiny Plants Feed the Seas
•Shimmer and Splash: The Sparkling World of Sea Life
by Jim Arnosky
.23
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sciencetogo.pcls.us
253-548-3300 • Washington Relay TTY 711 • 7/16 (350) io
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Visit
Foss
C Waterwaythe
l
Seaport
a in Tacoma for a dose
oc of local
maritime history.
Find more information at
fosswaterwayseaport.org.
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Mor
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a t y b o o ks
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libra ur
ry
by Molly Bang and Penny Chisholm
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You’re welco
On very cold winter days you may notice frozen puddles and ponds. But have you ever seen Puget Sound ice over? Of course not! Discover more about the phenomenon in this simple exploration.
What you need:
• 2 small cups
• 1 tsp salt
• 2/3 cup cold water
• Marker or pen
• Freezer
Try this:
1. Label one cup “fresh water” and the other cup “salt water.”
2. Measure 1/3 cup of water into each cup.
3. Add the salt to the appropriate cup.
4. Place both cups on a flat surface of the freezer. Leave them alone for a little more than an hour.
5. Make a prediction: Will both cups get icy?
6. Check cups for ice. Chances are that the fresh water changed to ice, at least on top
(like the top of a frozen puddle). Plain water freezes at 32 degrees, but salt water
needs much colder temperatures to form ice, so the salt water cup is likely cloudy and unfrozen—unless you have a super-cold freezer!
7. Remember that Puget Sound is part of the Pacific Ocean. Does it make sense that it doesn’t get icy in the wintertime?
Goin
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Try floating an surprised by what happens?
Are you
Visit sc
ience Standards.
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Funded by
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Pierce County Library Foundation