This is a set of four quite straightforward questions suitable for the new topic of HR diagrams on the Edexcel IGCSE 1-9 course. Mark schemes provided.
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Just what I was looking for, thanks for sharing
Just what I needed. Thanks, I was trawling through OCR 21st Century P7 papers and you've really helped me get some more questions on HR diagrams.
This is really great. There isn't a lot of astronomy stuff for the spec changes.<br />
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