Grade 1
An adaptation is a special
feature that helps an
animal stay alive in its
habitat.
adaptation
© Macmillan/McGraw-Hill
Nigel J. Dennis/Photo Researchers, Inc.
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California Science / 1
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ISBN 0-02-284471-6
adaptation
© Macmillan/McGraw-Hill
Nigel J. Dennis/Photo Researchers, Inc.
California Science / 1
An adaptation is a special
feature that helps an
animal stay alive in its
habitat.
balance scale
© Macmillan/McGraw-Hill
Ken Cavanagh for Macmillan/McGraw-Hill.
California Science / 1
A balance scale can be
used to measure mass.
birds
© Macmillan/McGraw-Hill
FLIP DE NOOYER/FOTO NATURA/Minden Pictures.
California Science / 1
Birds are a group of animals
that have feathers. Birds
lay eggs.
boiling
© Macmillan/McGraw-Hill
Omni Photo/Index Stock Imagery.
California Science / 1
When a liquid gets enough
heat, it boils. Boiling can
change a liquid to a gas.
carnivore
© Macmillan/McGraw-Hill
Bruce Coleman Brakefield/Alamy.
California Science / 1
A carnivore is an animal
that eats only other
animals.
cooling
© Macmillan/McGraw-Hill
Ken Karp for Macmillan/McGraw-Hill.
California Science / 1
Cooling means to take
heat away.
compare
© Macmillan/McGraw-Hill
Macmillan/McGraw-Hill.
California Science / 1
Compare means to see
how things are alike and
different. You can use a
Venn diagram to compare
two things.
communicate
© Macmillan/McGraw-Hill
Macmillan/McGraw-Hill.
California Science / 1
Communicate means
to write, draw, or tell
your ideas to others. You
can use a word web to
communicate your ideas.
classify
© Macmillan/McGraw-Hill
Brand X Pictures/Getty Images.
California Science / 1
Classify means to group
things that are alike.
dissolve
© Macmillan/McGraw-Hill
Ken Karp for Macmillan/McGraw-Hill.
California Science / 1
Dissolve means to
completely mix into
a liquid.
draw a
conclusion
© Macmillan/McGraw-Hill
Macmillan/McGraw-Hill.
California Science / 1
To draw a conclusion
means to use what you
observe to explain
what happens.
energy
© Macmillan/McGraw-Hill
Royalty-Free/CORBIS.
California Science / 1
Energy gives plants
and animals the power
to do things.