What Is Density? (Rookie Read-About Science (Paperback))
By Joanne Barkan.
Description
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! - from Amzon
ISBN(s)
0516246607, 9780516246604
