Barkan, Joanne. <br/><br/>
What is density? / 
by Joanne Barkan. 
 - New York :  Scholastic,  2006. 
 - 31 pages :   color illustrations ;   18 cm  
 - Rookie read-about science .
<br/><br/> Includes index. 
<br/><br/>H<br/> 
<br/><br/> Explains what density is, using examples from a birthday party--such as a room filling with people, a floating balloon, and the bubbles in a cup of soda--to illustrate the concept. 
<br/><br/> 440<br/>  Lexile <br/>  H<br/>  Raz-Plus<br/> 
<br/><br/><label>ISBN: </label>0516236180 
<br/><br/><label>LCCN: </label>2005021641 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Matter--Properties--Juvenile literature.<br/>Specific gravity--Juvenile literature.
<br/><br/><label>LC Class. No.: </label>QC173.36 .B37 
<br/><br/><label>Dewey Class. No.: </label>531.14