Is It Hard or Soft? cover art

Is It Hard or Soft?

Properties of Materials

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About this listen

A nail is hard. A cotton ball is soft. Why are some objects hard and others soft? Find out in this series about materials and their properties. Informative, at-level text helps listeners understand the differences between hard and soft materials.

©2021 Lisa J. Amstutz (P)2024 Capstone Publishers, Inc.
Physics Science & Technology
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