What Floats? What Sinks?: A Look at Density (Lightning Bolt Books ® ― Exploring Physical Science)
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What Floats? What Sinks?: A Look at Density (Lightning Bolt Books ® ― Exploring Physical Science)
Used Book in Good Condition
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?