Sally M. Walker - Investigating Heat
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- Year:2017
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Authors note: The experiments in this book use the metric measurement system, as
thats the system most commonly used by scientists.
Copyright 2012 by Sally M. Walker
All rights reserved. International copyright secured. No part of this book may be
reproduced, stored in a retrieval system, or transmitted in any form or by any means
electronic, mechanical, photocopying, recording, or otherwisewithout the prior written
permission of Lerner Publishing Group, Inc., except for the inclusion of brief quotations in
an acknowledged review.
Lerner Publications Company
A division of Lerner Publishing Group, Inc.
241 First Avenue North
Minneapolis, MN 55401 U.S.A.
Website address: www.lernerbooks.com
Library of Congress Cataloging-in-Publication Data
Walker, Sally M.
Investigating Heat / by Sally M. Walker.
p. cm. (Searchlight bookshow does energy work?)
Includes index.
ISBN 9780761357735 (lib. bdg. : alk. paper)
1. HeatTransmissionJuvenile literature. 2. HeatExperimentsJuvenile
literature. I. Title.
QC320.14.W35 2012
536dc22
2010039515
Manufactured in the United States of America
1 DP 7/15/11
Heat is important for
all animals and plants.
Without any heat, living
things die. The same thing
happens if living things get
too much heat. But with the
right amount of heat, animals
and plants live and grow. Heat
from the sun helps keep living
things healthy.
If a plant gets too hot or too cold, it
dies. But the right amount of heat
helps plants grow. What do we call
the amount of heat an object has?
object has is called its temperature. Water turns into ice
at a temperature called the freezing point. Water turns
into a gas at a temperature called the boiling point.
daytime. Most plants and
animals cant live there because
it is too hot and too dry.
Temperature
temperature
in units called
degrees.
Thermometers
are tools
that are used
to measure
temperature.
the temperature on a
warm summer day.
Fahrenheit scale. Using this scale, the temperature at
which water freezes is about 32F (0C). And water boils
at about 212F (100C). Many people in the United States
use the Fahrenheit scale.
thermometers
measure
temperature with
the Celsius scale.
Using this scale,
water freezes at
about 0C (32F).
And water boils at
about 100C (212F).
Scientists use the
Celsius scale. So do
most other people
around the world.
TEMPERATURE SCALES
boils
32F
water
freezes
0C
Fahrenheit scale
Celsius scale
F stands for degrees Fahrenheit, and
C stands for degrees Celsius.
measure the temperature of a room. Some are used
to find out if a sick person has a fever. Some are used
to measure the temperature of very hot things, such
as ovens or melted rocks. And some measure the
temperature of cold places, such as freezers.
meat. The long metal thermometer is used in
making candy. The white plastic thermometer is
used to take a persons temperature.
heat our homes. Stoves and
ovens heat our food. Engines in
cars make heat when they run. But
where does heat come
from? The answer
begins with matter.
bread brown and crunchy.
What are some other ways
that we use heat?
and can be weighed.
weighed. All the objects around you are made of matter.
Books, pencils, air, and milk are all matter.
Atoms are so small that billions of them can fit on the
period at the end of this sentence.
LOOKS LIKE. THE PICTURE IS MUCH
LARGER THAN A REAL-LIFE ATOM.
are on Earth. Each kind of atom is called an element.
Oxygen, gold, helium, hydrogen, and calcium are some of
the elements.
called the lead. Pencil leads are
made of an element called carbon.
molecules. Some molecules are made up of only one
kind of atom. The molecules found in hydrogen gas are
all made of hydrogen atoms.
atoms join together. The combined atoms make a new
substance. Two atoms of hydrogen can join with one atom
of oxygen. Together they make one molecule of water.
gas)
atoms
atom
atom
Molecule
atom
atoms
hydrogen molecules and water
molecules are made. Two
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