PREVIOUS MATERIAL (20%)
Convert between different units of quantities
Vectors and Scalars
- Distinguishing between vector and scalar quantities
- Basics of visually adding/subtracting vectors
Work, Energy and Power
- Definition of work
Kinematics
- Displacement, velocity, speed and acceleration
- SUVAT equations
- Free fall motion
- Graphical representation of motion i.e. distance-time graphs etc. and the gradients and areas under the curves
Projectile motion (HL only)
Forces and dynamics
- Rope tension problems
- Free body diagrams
- Newton's 2nd Law: F = ma and F = time rate of change of momentum
- Momentum
Newton’s Laws of Motion
Work, energy and power
THINGS TO KNOW:
- How to calculate displacement
- Differences between "instantaneous" and "average" quantities like velocity, accel. etc.
CURRENT MATERIAL (80%)
1D and 2D MOTION
UNIFORM CIRCULAR MOTION
Object undergoes acceleration since its position is changing even though its speed remains the same
- Centripetal force and acceleration
- Directions of velocity, force and acceleration vectors
GRAVITATION
- Gravitational field (magnitude and vector description; representing gravity with a vector field picture)
- Finding the gravitational field at a particular point
- Newton's Universal Law of Gravitation
- Values of g at the surfaces of different planets
PROPORTIONALITY RELATIONSHIPS
- Proportional vs. inversely proportional variables and the corresponding equations
- Writing an equation for two given variables which are prop. or inversely prop. (using k as a proportionality constant)
i.e. A = k/B or C = kD
- Examples of proportional and inversely proportional relationships we've studied
(pressure/volume, Newton's universal gravit. law, etc.)
ATOMIC AND QUANTUM PHYSICS
- Thomson’s plum pudding model (very basics)
- Rutherford/Geiger-Marsden gold foil experiment (important)
- Bohr’s atom (strengths and weaknesses of the model)
Electrons travel around nucleus in circular orbits
Bohr atom predicts the spectrum of hydrogen
Be able to describe two limitations of the Bohr model
- Atomic emission spectra (important)
The difference between atomic spectra and blackbody radiation
How the spectra are produced
The emission spectrum of hydrogen (qualitative - don't need to know exact wavelengths)
Be able to explain what spectra tell us about the energy of electrons within the atom
Know that emission spectra are direct experimental evidence for the notion of electron energy levels
Be able to calculate energy levels based on wavelengths of spectral lines and vice versa
- Quantization of energy in atoms
E = hf (be sure to know the proper units for use in this equation)
Be able to explain how emission spectra provide direct experimental support for the notion of quantized energy levels
- Matter waves
de Broglie matter waves were proposed in the De Broglie Hypothesis as part of the concept of the wave-particle duality of matter
- Quantum mechanical model (purely qualitative)
Schrodinger's model
Electrons are waves rather than particles and are described by wave functions
Be able to explain the meaning of "the probabilistic nature pf the quantum mechanical model"
- Atomic number, mass, isotopes etc.
PHOTOELECTRIC EFFECT
- Basics of how the photoelectric effect works
- Basic experimental set-up to demonstrate the photoelectric effect and the results that would be expected if light were purely a wave
- The full reasoning behind the conclusion that light has a particle nature
WAVES
- Relationship between speed, frequency and wavelength (f*lambda = speed)
- Difference between transverse and longitudinal waves
- Constructive and destructive interference
LIGHT
- The electromagnetic nature of light
Light is a transverse wave of oscillating electric and magnetic fields
Study the diagrams of light which show the electric and magnetic fields
- How light is produced
Light is produced by accelerating charges
Be able to give an example of how light waves are produced (your textbook discusses the production of radio waves)
- The various types of light in the electromagnetic spectrum
Know the orders of magnitude of the wavelengths and frequencies of the different regions of the EM spectrum
- Wave-particle duality of light
- Orders of magnitude of the wavelengths of the various types of light (visible, UV etc.)
- Black-body radiation
- Absorption, reflection and transmission and how they take place at an atomic and molecular level
- Scattering of light - how it occurs at the atomic level
- The very basics of Young's Double Slit experiment (qualitative only - no calculations needed)
- Monochromatic light (basic definition)
No comments:
Post a Comment