- What is cotton? - Where do we get cotton from? - Why is cotton useful? Each title in material takes a close look at an important material-what it is, where it comes from, whether it is natural or man-made, and what its properties are. The book also explains how we produce the material, how we use it, how we process it, and how it can be recycled.
- What is rubber? - Where do we get rubber from? - Why is rubber useful? Each title in materials takes a close look at an important material-what it is, where it comes from, whether it is natural or man-made, and what its properties are. The book also explains how we produce the material, how we use it, how we process it, and how it can be recycled.
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Describes a reason why we need the gas oxygen to stay alive and how a gas changes into a liquid.
You will discover: What shape a liquid is; how a liquid changes into a solid; why gardens get frosty in winter