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Cosmography: Stars
This digital exercise will help you learn more about stars. While completing the multiple choice questions and fill-in exercises you will learn more about:
- characteristics;
- spectral class;
- star formation;
- end of light stars;
- end of stars like the …
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Types of paint
In this learning resource you will see how paint is used as protection, as decoration, as signaling, in painting, and you will be introduced to the important types of paint.
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Natural coloring agents
A natural dye is a dye derived from plants, mushrooms or animals. They can be used for dyeing wool, textiles, hair and food. In this exercise you will become acquainted with different species and their origins. You will also see the link with E …
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Plastics: Examples
In this exercise you match the correct term with the correct description. Terms that are discussed include:
- nylon,
- polyethylene,
- synthetic resin,
- composite,
- carbon fiber,
- elastomer,
- ...
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