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In this exercise you are going to learn more about dowsing as a pseudo-scientific practice and use your knowledge of Earth science to critically evaluate the practice.  To begin, let’s learn about dowsing from someone who practices the craft and…

Now that you have explored the relationship between spectral type, temperature and luminosity, you can further investigate these variables using with the simple animation at the bottom of the website: To check for understanding, use the slider bar to answer…