By (author) Jennifer Boothroyd
What Floats? What Sinks?: A Look at Density
Paperback
(Lerner Classroom March 15, 2010)
A rock sinks in the water. A hot air balloon floats in the air. Many objects float and sink. But what makes them move this way? And how do people use floating and sinking in their lives?
- Pages
- 32
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