OCR A level Physics: Stars
OCR A level Physics: Chapter 19 Stars is apart of the Module 5: Newtonian world and Astrophysics.
All presentations come with worked examples, solutions and homeworks.
19.1 Objects in the Universe
19.2 Life Cycles of Stars
19.3 Hertzsprung-Russell Diagram
19.4 Energy Levels in Atoms
19.5 Spectra
19.6 Analysing Starlight
19.7 Stellar Luminosity
* The size of astronomical objects: Universe, Galaxies, Solar systems, Stars, Planets, Planetary satellites, Comets, Artificial planetary satellites
* Comparing planets and comets
* The birth of stars
* Stars in equilibrium during the main sequence
* Calculating mass in kg from solar mass
* Life cycle of stars with a mass between 0.5 and 10 solar masses
* Life cycle of stars with a mass above 10 solar masses
* Pauli exclusion principle and electron degeneracy pressure
* Red giants and white dwarfs
* The Chandrasekhar limit
* Red supergiants to black holes and neutron stars
* Stellar nucleosynthesis
* Definition of luminosity
* Usual axis choice of a HR diagram.
* Identifying the positions of the main sequence, white dwarfs, red giants, and red supergiants.
* Description of how stellar evolution is shown in a Hertzsprung-Russell diagram
* Atoms have different electron arrangements
* Ground state energy
* Bound electron states being negative
* Converting between joules and electronvolts
* Calculating the change of energy between energy states
* Calculating a photon’s frequency and wavelength
* The electromagnetic spectrum and wavelengths
* Definition of spectroscopy
* Electrons and energy levels
* Continuous spectra
* Emission spectra from gases
* Absorption spectra from gases
* Electromagnetic interference
* Double slit experiment
* Path and phase difference
* Diffraction grating
* The grating equation
* Lines per millimeter to grating spacing
* Maximum order, n
* Maximum number of maxima
* The electromagnetic spectrum, frequency/wavelength, and temperature
* Black body radiation
* Wein’s displacements law
* Stefan’s law (Stefan-Boltzmann law)
