O-LevelPhysicsNuclear Physics5054/22 · Oct/Nov 2017 · Q55 Marks
A process called nuclear fusion takes place in the Sun.
- (a)Discuss the process of nuclear fusion taking place in the Sun.[3]
- (b)On Earth, solar panels and solar cells are powered by energy from the Sun. Describe how this energy from the Sun travels to Earth.[2]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2017). The mark or mark type is shown in brackets.
- [B1] joining together of (small) nuclei (to make bigger nuclei)
- [B1] energy released
- [B1] hydrogen (used) or helium (produced)
- [B1] electromagnetic radiation/infra-red/light/ultraviolet
- [B1] travels through vacuum or no medium needed
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