Here is a worksheet on the Greek word root heli/o. It means, simply, sun. Like many Greek roots, this one forms the basis of a number of scientific words like heliograph, heliotrope, and helium. I understand these are not exactly high-frequency words in English, but these words, if the book that animated this series of worksheets is accurate, will show up on the SAT and other gatekeeping instruments for post-secondary institutions and graduate programs.
In any case, it’s hard to imagine a global studies or world history course (or whatever your school district calls it) that wouldn’t mention heliocentrism.
If you find typos in this document, I would appreciate a notification. And, as always, if you find this material useful in your practice, I would be grateful to hear what you think of it. I seek your peer review.
Mark's Text Terminal 