Theoretical Physics

6. a powerful luminous explosion of a large star
7. the rate at which the position of an object changes over time
9. the branch of astronomy that deals with the physics of the Universe
10. a particle from one of the two major classes that behaves according to Fermi–Dirac statistics (the other class is bosons)
11. the matter which consists of antiparticles
13. an elementary particle and a fundamental constituent of matter

1. a natural phenomenon by which physical bodies attract each other with a force proportional to their masses
2. the branch of mathematics that studies change and consists of two major sub-fields (differential and integral)
3. the principle that states that, for all linear systems, the net response caused by two or more stimuli is the sum of the responses that would have been caused by each stimulus individually
4. the process of converting an atom or molecule into an ion by adding or removing charged particles such as electrons
5. the distance over which a wave's shape repeats
8. the branch of physics which involves the behaviour and properties of light, including its interactions with matter
10. the number of occurrences of a repeating event per unit of time
12. the small region consisting of protons and neutrons at the centre of an atom