# AHL units, lessons & tests

#### Additional Higher Level

The core contains pretty much the basic topics but maybe not enough if you want to study physics or a related subject at university, the additional HL content adds depth to waves, fields, electricity, magnetism, quantum and nuclear physics. The idea is that the HL course is not more difficult than the SL but contains more topics but this clearly isn't the case, all the AHL content is more advanced than the SL common core.

 CORE ADDITIONAL HIGHER LEVEL Measurements and uncertainties Measurements in physics Uncertainties and errors Vectors and scalars Mechanics Motion Forces Work, energy and power Momentum and impulse Thermal physics Thermal concepts Modelling a gas Waves Oscillations SHM Travelling waves Single slit diffraction Wave characteristics Interference Wave behaviour Resolution Standing waves Doppler Electricity and magnetism Electric fields Electromagnetism Heating effect of electric currents Power generation and transmission Electric cells Capacitance Magnetic effects of electric currents Circular motion and gravitation Circular motion Describing fields Newton’s law of gravitation Fields at work Atomic, nuclear and particle physics Discrete energy and radioactivity Interaction of matter with radiation Nuclear reactions Nuclear physics The structure of matter Energy production Energy sources Thermal energy transfer

If you teach HL and SL separately then it would make sense to run deal with the AHL topics as extensions of each core topic however if you teach a combined class you will need to come up with a way of organising the topics so that the SL students don't have to study things that they won't be examined on. In the previous syllabus some of the AHL material was part of the options for SL so could be taught together, this is no longer the case. Here are some possible timetable scenarios.

Combined class with 3 SL periods per week and 4 HL

This sort of schedule is quite common in a lot of schools but is very difficult to organise since the first 3 topics are common to HL and SL, which means that its not easy to let the SL students go for the first term and a bit. This is OK if the SL students aren't time tabled for anything in the HL only class since then they can simply attend all classes at the beginning.

Combined class where SL can be given free time when AHL material is covered

This could work but it means that SL students can't be time tabled to do anything else in the extra HL time. Simply teach as HL but allow SL students to have time off when covering HL material.

Combined first year separate second year

With this schedule it is possible to cover the first 6 core topics during the 1st year then return to the AHL topics with the HL class in the second year. This gives an easy second year for the SL students which isn't a bad thing. An alternative would be to cover mechanics, thermal, integrating the engineering option topics of rotational motion and thermodynamics then follow with circular motion, fields, oscillations and waves . This would leave the rest of the core and AHL to be done in the second year. I quite like this way and might even try it myself. The advantage is that you don't have to revisit topics with the HL class in the second year and the engineering option gives access to more possible investigation topics than any other option. The main disadvantage is that students don't get to choose the option (or is this an advantage?).

The basic outline would be as below

1st year (approx 80 hrs)
Measurements and uncertainties
Mechanics
Rotational mechanics (option)
Thermal physics
Thermodynamics (option)
Energy production
Circular motion and gravitation
Oscillations and Waves

2nd year (HL) (approx 100 hrs)
SHM and Waves AHL
Resonance (HL option)
Fields (AHL)
Electricity and magnetism (core + AHL)
Atomic, nuclear and particle physics (core + AHL)
Fluids (HL option)
Global energy transfer

2nd year (SL) (approx 30 hrs)
Electricity and magnetism
Atomic and nuclear
Global energy transfer

This looks a little uneven in terms of HL and SL but I think it could work. With this schedule the investigation could be early in the second term giving plenty of time for feedback.

## Selected Pages

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### Unit Planner: Quantum and nuclear physics24 October 2021

Start date:Diploma assessmentx Paper 1x Paper 2Paper 3x InvestigationText book referenceHamperTransfer GoalsList here one...
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### Practical: Measuring half life of beer foam15 September 2018

This practical is adapted from a worksheet posted by Mark Headlee (UWC USA) on the OCC.When you pour a glass of beer the...
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### Solutions: Nuclear AHL21 November 2021

1. The diagram below show the paths of two isotopes of Oxygen (16O and 18O) in a mass spectrometer.Show that if the radius...
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### MCQs: Exponential decay29 April 2020

Exponential decay 30/12/2015 : Migrated
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### MCQs: Nuclear mass and exp decay29 April 2020

Nuclear mass and exponential decay 30/12/2015 : Migrated
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### Photoelectric Effect26 April 2020

I often introduce the photoelectric effect by describing the zinc plate on an electroscope experiment and asking students...
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