What Is Density?Book - 2006
What do a softball, a popcorn ball, and a birthday party balloon have in common? They all are made of matter and take up space. Is What Is Density? young readers will find out why the baseball is heavier than the popcorn ball and why they'd better hold on to the string of that balloon!
Publisher: New York : Children's, 
Copyright Date: ©2006
Branch Call Number: JE 531.14 Bar
Characteristics: 31 pages : color illustrations ; 19 cm.