TY - BOOK AU - Barkan, Joanne TI - What is density? T2 - Rookie read-about science SN - 13:978-0-516-24660-4 AV - 531.14 B24w c2006 PY - 2006/// CY - New York PB - Children`s Press KW - Matter KW - Properties KW - Juvenile literature KW - Specific gravity N1 - Lex: 330; 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 ER -