Particles and Photoelectric Effect Crossword Puzzle

QUESTIONS LIST: neutron: a fundamental particle with no charge, weak: interaction responsible for radioactive decay, charm: quark flavour, heavier than up and down, standard model: theoretical framework for understanding fundamental forces and particles, muon: a type of lepton, electron's heavier cousin, positron: antiparticle of an electron, lhc: collider located near geneva, gluon: type of boson that carries the strong force, photoelectric effect: phenomenon explained by einstein, proving light's particle nature, threshold: minimum frequency needed to emit electrons, intensity: increasing this quantity will cause more photoelectrons to be emitted per second, cathode: metal surface used to demonstrate the photoelectric effect, photon: energy quanta of light, ev: material's work function measured in this unit, photo electrons: electrons emitted in the photoelectric effect, plancks: this person's law states that the energy is proportional to frequency.