Spec 0625
Revise CIE IGCSE Physics 6.2 Stars and the Universe with the question bank and revision guides.
Know that the Sun is a star of medium size, consisting mostly of hydrogen and helium, and that it radiates most of its energy in the infrared, visible light and ultraviolet regions of the electromagnetic spectrum • Supplement: Know that stars are powered by nuclear reactions that release energy and that in stable stars the nuclear reactions involve the fusion of hydrogen into helium
