It can be surprising which objects float and which don't. An apple
floats, but a ball of aluminum foil does not. If that same ball of foil
is shaped into a boat, it floats! Why? And how is it possible that a
huge ship made of steel can float? Answering these questions about
density and flotation is David A. Adler's clear, concise text, paired
with Anna Raff's delightful illustrations. Activities that demonstrate
the properties of flotation are included.